tests: Add comprehensive GIF test suite

Add tests that exert many different types of GIF files. Some of the tests are
disabled as the current gdk-pixbuf GIF implementation doesn't handle them
correctly. Future commits will fix these issues and enable the tests.

The test suite is generated in the PyGIF project
(https://github.com/robert-ancell/pygif)

226 files changed, 1558 insertions, 0 deletions

diff --git a/tests/meson.build b/tests/meson.build
index 4fa3fbce3..b7f9bc45c 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -53,6 +53,7 @@ installed_tests = [
   [ 'pixbuf-icon-serialize', ['conform'], ],
   [ 'pixbuf-randomly-modified', ['slow'], ],
   [ 'pixbuf-threads', ['io'], ],
+  [ 'pixbuf-gif', ['io'], ],
   [ 'pixbuf-icc', ['io'], ],
   [ 'pixbuf-jpeg', ['format'], ],
   [ 'pixbuf-dpi', ['io'], ],
diff --git a/tests/pixbuf-gif.c b/tests/pixbuf-gif.c
new file mode 100644
index 000000000..53b58d587
--- /dev/null
+++ b/tests/pixbuf-gif.c
@@ -0,0 +1,222 @@
+/* -*- Mode: C; c-basic-offset: 2; -*- */
+/* GdkPixbuf library - test loaders
+ *
+ * Copyright (C) 2018 Canonical Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "gdk-pixbuf/gdk-pixbuf.h"
+#include "test-common.h"
+#include <string.h>
+
+const gchar *
+get_test_path (const gchar *filename)
+{
+  return g_test_get_filename (G_TEST_DIST, "test-images", "gif-test-suite", filename, NULL);
+}
+
+static gboolean
+pixels_match (GBytes *pixels0, GBytes *pixels1)
+{
+  gsize size0, size1, i;
+  guint8 *data0, *data1;
+
+  data0 = g_bytes_get_data (pixels0, &size0);
+  data1 = g_bytes_get_data (pixels1, &size1);
+
+  if (size0 != size1)
+    return FALSE;
+
+  for (i = 0; i < size0; i += 4)
+   {
+     guint8 red0, green0, blue0, alpha0;
+     guint8 red1, green1, blue1, alpha1;
+
+     red0 = data0[i + 0];
+     green0 = data0[i + 1];
+     blue0 = data0[i + 2];
+     alpha0 = data0[i + 3];
+     red1 = data1[i + 0];
+     green1 = data1[i + 1];
+     blue1 = data1[i + 2];
+     alpha1 = data1[i + 3];
+     if (alpha0 == 0 && alpha1 == 0)
+        ; /* Transparent, don't care what the RGB is set to */
+     else if (red0 != red1 || blue0 != blue1 || green0 != green1 || alpha0 != alpha1)
+        return FALSE;
+   }
+
+  return TRUE;
+}
+
+static void
+run_gif_test (gconstpointer data)
+{
+  const gchar *name = data;
+  GKeyFile *config_file;
+  gchar *config_filename, *input_filename;
+  gint width, height;
+  GFile *input_file;
+  GBytes *input_bytes;
+  GdkPixbufLoader *loader;
+  GdkPixbufAnimation *animation = NULL;
+  GdkPixbufAnimationIter *iter = NULL;
+  GTimeVal animation_time;
+  GStrv frames;
+  int i;
+  GError *error = NULL;
+
+  config_file = g_key_file_new ();
+  g_key_file_set_list_separator (config_file, ',');
+  config_filename = g_strdup_printf ("%s.conf", name);
+  g_key_file_load_from_file (config_file, get_test_path (config_filename), G_KEY_FILE_NONE, &error);
+  g_free (config_filename);
+  g_assert_no_error (error);
+
+  input_filename = g_key_file_get_string (config_file, "config", "input", &error);
+  g_assert_no_error (error);
+  input_file = g_file_new_for_path (get_test_path (input_filename));
+  g_free (input_filename);
+  input_bytes = g_file_load_bytes (input_file, NULL, NULL, &error);
+  g_clear_object (&input_file);
+  g_assert_no_error (error);
+
+  width = g_key_file_get_integer (config_file, "config", "width", &error);
+  g_assert_no_error (error);
+  height = g_key_file_get_integer (config_file, "config", "height", &error);
+  g_assert_no_error (error);
+
+  loader = gdk_pixbuf_loader_new ();
+  gdk_pixbuf_loader_write_bytes (loader, input_bytes, &error);
+  g_clear_pointer (&input_bytes, g_bytes_unref);
+  g_assert_no_error (error);
+
+  gdk_pixbuf_loader_close (loader, &error);
+  if (width == 0 || height == 0) {
+    g_assert_error (error, GDK_PIXBUF_ERROR, GDK_PIXBUF_ERROR_CORRUPT_IMAGE);
+    g_clear_error (&error);
+  }
+  else {
+    g_assert_no_error (error);
+    animation = gdk_pixbuf_loader_get_animation (loader);
+    g_assert_nonnull (animation);
+  }
+
+  frames = g_key_file_get_string_list (config_file, "config", "frames", NULL, &error);
+  g_assert_no_error (error);
+  animation_time.tv_sec = 0;
+  animation_time.tv_usec = 0;
+  for (i = 0; frames[i]; i++)
+    {
+      const gchar *frame = frames[i];
+      GdkPixbuf *pixbuf;
+      gint delay_time, expected_delay_time = 0;
+      gchar *pixels_filename;
+      GFile *pixels_file;
+      GBytes *expected_pixels, *pixels;
+
+      g_assert_nonnull (animation);
+
+      if (iter == NULL)
+        iter = gdk_pixbuf_animation_get_iter (animation, &animation_time);
+      else
+        gdk_pixbuf_animation_iter_advance (iter, &animation_time);
+      delay_time = gdk_pixbuf_animation_iter_get_delay_time (iter);
+      g_time_val_add (&animation_time, gdk_pixbuf_animation_iter_get_delay_time (iter) * 1000);
+
+      if (g_key_file_has_key (config_file, frame, "delay", &error))
+        expected_delay_time = g_key_file_get_integer (config_file, frame, "delay", &error) * 10;
+      g_assert_no_error (error);
+
+      /* gdk-pixbuf uses 20ms minimum delay when no delay specified */
+      if (expected_delay_time < 20)
+        expected_delay_time = 20;
+
+      /* gdk-pixbuf uses 100ms minimum when using Graphics Control Extension */
+      if (strcmp (name, "transparent") == 0 ||
+          strcmp (name, "invalid-transparent") == 0 ||
+          strcmp (name, "disabled-transparent") == 0 ||
+          strcmp (name, "animation-zero-delays") == 0)
+        if (expected_delay_time < 100)
+          expected_delay_time = 100;
+
+      g_assert_cmpint (delay_time, ==, expected_delay_time);
+
+      pixbuf = gdk_pixbuf_animation_iter_get_pixbuf (iter);
+
+      g_assert_cmpint (width, ==, gdk_pixbuf_get_width (pixbuf));
+      g_assert_cmpint (height, ==, gdk_pixbuf_get_height (pixbuf));
+
+      pixels_filename = g_key_file_get_string (config_file, frame, "pixels", &error);
+      g_assert_no_error (error);
+      pixels_file = g_file_new_for_path (get_test_path (pixels_filename));
+      g_free (pixels_filename);
+      expected_pixels = g_file_load_bytes (pixels_file, NULL, NULL, &error);
+      g_clear_object (&pixels_file);
+      g_assert_no_error (error);
+
+      g_assert_cmpint (gdk_pixbuf_get_colorspace (pixbuf), ==, GDK_COLORSPACE_RGB);
+      g_assert_cmpint (gdk_pixbuf_get_n_channels (pixbuf), ==, 4);
+      g_assert (gdk_pixbuf_get_has_alpha (pixbuf));
+      g_assert_cmpint (gdk_pixbuf_get_rowstride (pixbuf), ==, width * 4);
+      pixels = g_bytes_new_static (gdk_pixbuf_read_pixels (pixbuf), gdk_pixbuf_get_byte_length (pixbuf));
+      g_assert (pixels_match (pixels, expected_pixels));
+      g_clear_pointer (&pixels, g_bytes_unref);
+      g_clear_pointer (&expected_pixels, g_bytes_unref);
+    }
+  g_strfreev (frames);
+  g_clear_object (&iter);
+
+  /* FIXME: We should check here if there's more frames than we were expecting, but gdk-pixbuf doesn't return this information */
+
+  g_clear_object (&loader);
+  g_clear_pointer (&config_file, g_key_file_unref);
+}
+
+int
+main (int argc, char **argv)
+{
+  gchar *path, *contents;
+  GStrv lines;
+  int i, result;
+  GError *error = NULL;
+
+  g_test_init (&argc, &argv, NULL);
+
+  path = g_build_filename (g_test_get_dir (G_TEST_DIST), "test-images", "gif-test-suite", "TESTS", NULL);
+  g_file_get_contents (path, &contents, NULL, &error);
+  g_free (path);
+  g_assert_no_error (error);
+  lines = g_strsplit (contents, "\n", -1);
+  g_free (contents);
+  for (i = 0; lines[i]; i++)
+    {
+      const gchar *name = g_strstrip (lines[i]);
+      gchar *test_name;
+
+      if (g_strcmp0 (name, "") == 0 || name[0] == '#')
+        continue;
+
+      test_name = g_strdup_printf ("/pixbuf/gif/%s", name);
+      g_test_add_data_func (test_name, name, run_gif_test);
+      g_free (test_name);
+    }
+
+  result = g_test_run ();
+
+  g_strfreev (lines);
+
+  return result;
+}
diff --git a/tests/test-images/gif-test-suite/255-codes.conf b/tests/test-images/gif-test-suite/255-codes.conf
new file mode 100644
index 000000000..afbf0c02e
--- /dev/null
+++ b/tests/test-images/gif-test-suite/255-codes.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = 255-codes.gif
+version = GIF89a
+width = 100
+height = 100
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = random-image.rgba
+
diff --git a/tests/test-images/gif-test-suite/255-codes.gif b/tests/test-images/gif-test-suite/255-codes.gif
new file mode 100644
index 000000000..8714a6907
--- /dev/null
+++ b/tests/test-images/gif-test-suite/255-codes.gif
diff --git a/tests/test-images/gif-test-suite/4095-codes-clear.conf b/tests/test-images/gif-test-suite/4095-codes-clear.conf
new file mode 100644
index 000000000..20df9ac7f
--- /dev/null
+++ b/tests/test-images/gif-test-suite/4095-codes-clear.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = 4095-codes-clear.gif
+version = GIF89a
+width = 100
+height = 100
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = random-image.rgba
+
diff --git a/tests/test-images/gif-test-suite/4095-codes-clear.gif b/tests/test-images/gif-test-suite/4095-codes-clear.gif
new file mode 100644
index 000000000..4c9af9b21
--- /dev/null
+++ b/tests/test-images/gif-test-suite/4095-codes-clear.gif
diff --git a/tests/test-images/gif-test-suite/4095-codes.conf b/tests/test-images/gif-test-suite/4095-codes.conf
new file mode 100644
index 000000000..5bac5e1d9
--- /dev/null
+++ b/tests/test-images/gif-test-suite/4095-codes.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = 4095-codes.gif
+version = GIF89a
+width = 100
+height = 100
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = random-image.rgba
+
diff --git a/tests/test-images/gif-test-suite/4095-codes.gif b/tests/test-images/gif-test-suite/4095-codes.gif
new file mode 100644
index 000000000..e1def5a54
--- /dev/null
+++ b/tests/test-images/gif-test-suite/4095-codes.gif
diff --git a/tests/test-images/gif-test-suite/TESTS b/tests/test-images/gif-test-suite/TESTS
new file mode 100644
index 000000000..2dfc87aee
--- /dev/null
+++ b/tests/test-images/gif-test-suite/TESTS
@@ -0,0 +1,80 @@
+depth1
+depth2
+depth3
+depth4
+depth5
+depth6
+depth7
+depth8
+four-colors
+local-color-table
+no-global-color-table
+#no-data
+zero-width
+zero-height
+zero-size
+#image-zero-width
+#image-zero-height
+#image-zero-size
+invalid-background
+all-reds
+all-greens
+all-blues
+interlace
+image-inside-bg
+image-overlap-bg
+image-outside-bg
+#images-combine
+#images-overlap
+#high-color
+missing-pixels
+extra-pixels
+extra-data
+no-clear
+#no-eoi
+#no-clear-and-eoi
+#many-clears
+#double-clears
+invalid-colors
+max-width
+max-height
+#max-size
+4095-codes-clear
+4095-codes
+255-codes
+large-codes
+max-codes
+transparent
+invalid-transparent
+disabled-transparent
+loop-infinite
+loop-once
+loop-max
+loop-buffer
+loop-buffer_max
+loop-animexts
+animation
+animation-speed
+animation-no-delays
+animation-zero-delays
+dispose-none
+dispose-keep
+dispose-restore-background
+#dispose-restore-previous
+#animation-multi-image
+#animation-multi-image-explicit-zero-delay
+comment
+large-comment
+nul-comment
+invalid-ascii-comment
+invalid-utf8-comment
+plain-text
+xmp-data
+xmp-data-empty
+icc-color-profile
+icc-color-profile-empty
+unknown-extension
+unknown-application-extension
+nul-application-extension
+gif87a
+gif87a-animation
diff --git a/tests/test-images/gif-test-suite/all-blues.conf b/tests/test-images/gif-test-suite/all-blues.conf
new file mode 100644
index 000000000..c33477c4f
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-blues.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = all-blues.gif
+version = GIF89a
+width = 16
+height = 16
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = all-blues.rgba
+
diff --git a/tests/test-images/gif-test-suite/all-blues.gif b/tests/test-images/gif-test-suite/all-blues.gif
new file mode 100644
index 000000000..c528d16d5
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-blues.gif
diff --git a/tests/test-images/gif-test-suite/all-blues.png b/tests/test-images/gif-test-suite/all-blues.png
new file mode 100644
index 000000000..3027c9a37
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-blues.png
diff --git a/tests/test-images/gif-test-suite/all-blues.rgba b/tests/test-images/gif-test-suite/all-blues.rgba
new file mode 100644
index 000000000..87146526d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-blues.rgba
diff --git a/tests/test-images/gif-test-suite/all-greens.conf b/tests/test-images/gif-test-suite/all-greens.conf
new file mode 100644
index 000000000..23b605874
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-greens.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = all-greens.gif
+version = GIF89a
+width = 16
+height = 16
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = all-greens.rgba
+
diff --git a/tests/test-images/gif-test-suite/all-greens.gif b/tests/test-images/gif-test-suite/all-greens.gif
new file mode 100644
index 000000000..0cf1a7eb3
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-greens.gif
diff --git a/tests/test-images/gif-test-suite/all-greens.png b/tests/test-images/gif-test-suite/all-greens.png
new file mode 100644
index 000000000..f1bf882be
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-greens.png
diff --git a/tests/test-images/gif-test-suite/all-greens.rgba b/tests/test-images/gif-test-suite/all-greens.rgba
new file mode 100644
index 000000000..d28089ad3
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-greens.rgba
diff --git a/tests/test-images/gif-test-suite/all-reds.conf b/tests/test-images/gif-test-suite/all-reds.conf
new file mode 100644
index 000000000..246a36178
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-reds.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = all-reds.gif
+version = GIF89a
+width = 16
+height = 16
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = all-reds.rgba
+
diff --git a/tests/test-images/gif-test-suite/all-reds.gif b/tests/test-images/gif-test-suite/all-reds.gif
new file mode 100644
index 000000000..dacf261cf
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-reds.gif
diff --git a/tests/test-images/gif-test-suite/all-reds.png b/tests/test-images/gif-test-suite/all-reds.png
new file mode 100644
index 000000000..acb5a2bb1
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-reds.png
diff --git a/tests/test-images/gif-test-suite/all-reds.rgba b/tests/test-images/gif-test-suite/all-reds.rgba
new file mode 100644
index 000000000..3c2d29894
--- /dev/null
+++ b/tests/test-images/gif-test-suite/all-reds.rgba
diff --git a/tests/test-images/gif-test-suite/animation-erase.0.png b/tests/test-images/gif-test-suite/animation-erase.0.png
new file mode 100644
index 000000000..93afc1a87
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-erase.0.png
diff --git a/tests/test-images/gif-test-suite/animation-erase.0.rgba b/tests/test-images/gif-test-suite/animation-erase.0.rgba
new file mode 100644
index 000000000..6f3ee57a8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-erase.0.rgba
diff --git a/tests/test-images/gif-test-suite/animation-erase.1.png b/tests/test-images/gif-test-suite/animation-erase.1.png
new file mode 100644
index 000000000..63f7467f1
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-erase.1.png
diff --git a/tests/test-images/gif-test-suite/animation-erase.1.rgba b/tests/test-images/gif-test-suite/animation-erase.1.rgba
new file mode 100644
index 000000000..09f9d67c8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-erase.1.rgba
diff --git a/tests/test-images/gif-test-suite/animation-erase.2.png b/tests/test-images/gif-test-suite/animation-erase.2.png
new file mode 100644
index 000000000..e01b7af90
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-erase.2.png
diff --git a/tests/test-images/gif-test-suite/animation-erase.2.rgba b/tests/test-images/gif-test-suite/animation-erase.2.rgba
new file mode 100644
index 000000000..aea1bad30
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-erase.2.rgba
diff --git a/tests/test-images/gif-test-suite/animation-erase.3.png b/tests/test-images/gif-test-suite/animation-erase.3.png
new file mode 100644
index 000000000..6674ab739
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-erase.3.png
diff --git a/tests/test-images/gif-test-suite/animation-erase.3.rgba b/tests/test-images/gif-test-suite/animation-erase.3.rgba
new file mode 100644
index 000000000..4f541adbf
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-erase.3.rgba
diff --git a/tests/test-images/gif-test-suite/animation-fill.0.png b/tests/test-images/gif-test-suite/animation-fill.0.png
new file mode 100644
index 000000000..48331eac3
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-fill.0.png
diff --git a/tests/test-images/gif-test-suite/animation-fill.0.rgba b/tests/test-images/gif-test-suite/animation-fill.0.rgba
new file mode 100644
index 000000000..1c8eae32c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-fill.0.rgba
diff --git a/tests/test-images/gif-test-suite/animation-fill.1.png b/tests/test-images/gif-test-suite/animation-fill.1.png
new file mode 100644
index 000000000..42cac88a4
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-fill.1.png
diff --git a/tests/test-images/gif-test-suite/animation-fill.1.rgba b/tests/test-images/gif-test-suite/animation-fill.1.rgba
new file mode 100644
index 000000000..22e64cb5b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-fill.1.rgba
diff --git a/tests/test-images/gif-test-suite/animation-fill.2.png b/tests/test-images/gif-test-suite/animation-fill.2.png
new file mode 100644
index 000000000..892845555
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-fill.2.png
diff --git a/tests/test-images/gif-test-suite/animation-fill.2.rgba b/tests/test-images/gif-test-suite/animation-fill.2.rgba
new file mode 100644
index 000000000..9591eae00
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-fill.2.rgba
diff --git a/tests/test-images/gif-test-suite/animation-fill.3.png b/tests/test-images/gif-test-suite/animation-fill.3.png
new file mode 100644
index 000000000..e98c4d0ad
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-fill.3.png
diff --git a/tests/test-images/gif-test-suite/animation-fill.3.rgba b/tests/test-images/gif-test-suite/animation-fill.3.rgba
new file mode 100644
index 000000000..13ff23b1b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-fill.3.rgba
@@ -0,0 +1 @@
+ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
\ No newline at end of file
diff --git a/tests/test-images/gif-test-suite/animation-multi-image-explicit-zero-delay.conf b/tests/test-images/gif-test-suite/animation-multi-image-explicit-zero-delay.conf
new file mode 100644
index 000000000..68a821bea
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-multi-image-explicit-zero-delay.conf
@@ -0,0 +1,27 @@
+# Automatically generated, do not edit!
+[config]
+input = animation-multi-image-explicit-zero-delay.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation-fill.0.rgba
+delay = 50
+
+[frame1]
+pixels = animation-fill.1.rgba
+delay = 50
+
+[frame2]
+pixels = animation-fill.2.rgba
+delay = 50
+
+[frame3]
+pixels = animation-fill.3.rgba
+delay = 50
+
diff --git a/tests/test-images/gif-test-suite/animation-multi-image-explicit-zero-delay.gif b/tests/test-images/gif-test-suite/animation-multi-image-explicit-zero-delay.gif
new file mode 100644
index 000000000..d3bcb7bff
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-multi-image-explicit-zero-delay.gif
diff --git a/tests/test-images/gif-test-suite/animation-multi-image.conf b/tests/test-images/gif-test-suite/animation-multi-image.conf
new file mode 100644
index 000000000..bf8c2c737
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-multi-image.conf
@@ -0,0 +1,27 @@
+# Automatically generated, do not edit!
+[config]
+input = animation-multi-image.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation-fill.0.rgba
+delay = 50
+
+[frame1]
+pixels = animation-fill.1.rgba
+delay = 50
+
+[frame2]
+pixels = animation-fill.2.rgba
+delay = 50
+
+[frame3]
+pixels = animation-fill.3.rgba
+delay = 50
+
diff --git a/tests/test-images/gif-test-suite/animation-multi-image.gif b/tests/test-images/gif-test-suite/animation-multi-image.gif
new file mode 100644
index 000000000..49060983b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-multi-image.gif
diff --git a/tests/test-images/gif-test-suite/animation-no-delays.conf b/tests/test-images/gif-test-suite/animation-no-delays.conf
new file mode 100644
index 000000000..0fdf6a6e3
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-no-delays.conf
@@ -0,0 +1,23 @@
+# Automatically generated, do not edit!
+[config]
+input = animation-no-delays.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = yes
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation.0.rgba
+
+[frame1]
+pixels = animation.1.rgba
+
+[frame2]
+pixels = animation.2.rgba
+
+[frame3]
+pixels = animation.3.rgba
+
diff --git a/tests/test-images/gif-test-suite/animation-no-delays.gif b/tests/test-images/gif-test-suite/animation-no-delays.gif
new file mode 100644
index 000000000..a95e2427a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-no-delays.gif
diff --git a/tests/test-images/gif-test-suite/animation-speed.conf b/tests/test-images/gif-test-suite/animation-speed.conf
new file mode 100644
index 000000000..0ea67087b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-speed.conf
@@ -0,0 +1,27 @@
+# Automatically generated, do not edit!
+[config]
+input = animation-speed.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation.0.rgba
+delay = 25
+
+[frame1]
+pixels = animation.1.rgba
+delay = 50
+
+[frame2]
+pixels = animation.2.rgba
+delay = 100
+
+[frame3]
+pixels = animation.3.rgba
+delay = 200
+
diff --git a/tests/test-images/gif-test-suite/animation-speed.gif b/tests/test-images/gif-test-suite/animation-speed.gif
new file mode 100644
index 000000000..eb276119f
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-speed.gif
diff --git a/tests/test-images/gif-test-suite/animation-zero-delays.conf b/tests/test-images/gif-test-suite/animation-zero-delays.conf
new file mode 100644
index 000000000..956a3b226
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-zero-delays.conf
@@ -0,0 +1,23 @@
+# Automatically generated, do not edit!
+[config]
+input = animation-zero-delays.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = yes
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation.0.rgba
+
+[frame1]
+pixels = animation.1.rgba
+
+[frame2]
+pixels = animation.2.rgba
+
+[frame3]
+pixels = animation.3.rgba
+
diff --git a/tests/test-images/gif-test-suite/animation-zero-delays.gif b/tests/test-images/gif-test-suite/animation-zero-delays.gif
new file mode 100644
index 000000000..9c74fdbd8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation-zero-delays.gif
diff --git a/tests/test-images/gif-test-suite/animation.0.png b/tests/test-images/gif-test-suite/animation.0.png
new file mode 100644
index 000000000..48331eac3
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.0.png
diff --git a/tests/test-images/gif-test-suite/animation.0.rgba b/tests/test-images/gif-test-suite/animation.0.rgba
new file mode 100644
index 000000000..1c8eae32c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.0.rgba
diff --git a/tests/test-images/gif-test-suite/animation.1.png b/tests/test-images/gif-test-suite/animation.1.png
new file mode 100644
index 000000000..1444a56b7
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.1.png
diff --git a/tests/test-images/gif-test-suite/animation.1.rgba b/tests/test-images/gif-test-suite/animation.1.rgba
new file mode 100644
index 000000000..41f677ecc
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.1.rgba
diff --git a/tests/test-images/gif-test-suite/animation.2.png b/tests/test-images/gif-test-suite/animation.2.png
new file mode 100644
index 000000000..20bc8ed6a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.2.png
diff --git a/tests/test-images/gif-test-suite/animation.2.rgba b/tests/test-images/gif-test-suite/animation.2.rgba
new file mode 100644
index 000000000..10f5f0d82
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.2.rgba
diff --git a/tests/test-images/gif-test-suite/animation.3.png b/tests/test-images/gif-test-suite/animation.3.png
new file mode 100644
index 000000000..d8b3a5b4b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.3.png
diff --git a/tests/test-images/gif-test-suite/animation.3.rgba b/tests/test-images/gif-test-suite/animation.3.rgba
new file mode 100644
index 000000000..5eb07aba1
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.3.rgba
diff --git a/tests/test-images/gif-test-suite/animation.conf b/tests/test-images/gif-test-suite/animation.conf
new file mode 100644
index 000000000..6b2b61a09
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.conf
@@ -0,0 +1,27 @@
+# Automatically generated, do not edit!
+[config]
+input = animation.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation.0.rgba
+delay = 50
+
+[frame1]
+pixels = animation.1.rgba
+delay = 50
+
+[frame2]
+pixels = animation.2.rgba
+delay = 50
+
+[frame3]
+pixels = animation.3.rgba
+delay = 50
+
diff --git a/tests/test-images/gif-test-suite/animation.gif b/tests/test-images/gif-test-suite/animation.gif
new file mode 100644
index 000000000..3cd527614
--- /dev/null
+++ b/tests/test-images/gif-test-suite/animation.gif
diff --git a/tests/test-images/gif-test-suite/checkerboard.png b/tests/test-images/gif-test-suite/checkerboard.png
new file mode 100644
index 000000000..7fc792247
--- /dev/null
+++ b/tests/test-images/gif-test-suite/checkerboard.png
diff --git a/tests/test-images/gif-test-suite/checkerboard.rgba b/tests/test-images/gif-test-suite/checkerboard.rgba
new file mode 100644
index 000000000..0a0793c11
--- /dev/null
+++ b/tests/test-images/gif-test-suite/checkerboard.rgba
diff --git a/tests/test-images/gif-test-suite/comment.conf b/tests/test-images/gif-test-suite/comment.conf
new file mode 100644
index 000000000..178a2d16c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/comment.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = comment.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+comment = 'Hello World!'
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/comment.gif b/tests/test-images/gif-test-suite/comment.gif
new file mode 100644
index 000000000..52b801f82
--- /dev/null
+++ b/tests/test-images/gif-test-suite/comment.gif
diff --git a/tests/test-images/gif-test-suite/depth1.conf b/tests/test-images/gif-test-suite/depth1.conf
new file mode 100644
index 000000000..c34a8f36b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth1.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = depth1.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/depth1.gif b/tests/test-images/gif-test-suite/depth1.gif
new file mode 100644
index 000000000..d3b1a94c9
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth1.gif
diff --git a/tests/test-images/gif-test-suite/depth2.conf b/tests/test-images/gif-test-suite/depth2.conf
new file mode 100644
index 000000000..edff4ae5b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth2.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = depth2.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/depth2.gif b/tests/test-images/gif-test-suite/depth2.gif
new file mode 100644
index 000000000..a0039348c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth2.gif
diff --git a/tests/test-images/gif-test-suite/depth3.conf b/tests/test-images/gif-test-suite/depth3.conf
new file mode 100644
index 000000000..3220b32d2
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth3.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = depth3.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/depth3.gif b/tests/test-images/gif-test-suite/depth3.gif
new file mode 100644
index 000000000..7911fcc16
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth3.gif
diff --git a/tests/test-images/gif-test-suite/depth4.conf b/tests/test-images/gif-test-suite/depth4.conf
new file mode 100644
index 000000000..18d191cc5
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth4.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = depth4.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/depth4.gif b/tests/test-images/gif-test-suite/depth4.gif
new file mode 100644
index 000000000..8fccd0837
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth4.gif
diff --git a/tests/test-images/gif-test-suite/depth5.conf b/tests/test-images/gif-test-suite/depth5.conf
new file mode 100644
index 000000000..6688b6740
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth5.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = depth5.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/depth5.gif b/tests/test-images/gif-test-suite/depth5.gif
new file mode 100644
index 000000000..e61ccb979
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth5.gif
diff --git a/tests/test-images/gif-test-suite/depth6.conf b/tests/test-images/gif-test-suite/depth6.conf
new file mode 100644
index 000000000..14051ce6d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth6.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = depth6.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/depth6.gif b/tests/test-images/gif-test-suite/depth6.gif
new file mode 100644
index 000000000..0274106bf
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth6.gif
diff --git a/tests/test-images/gif-test-suite/depth7.conf b/tests/test-images/gif-test-suite/depth7.conf
new file mode 100644
index 000000000..887a3cf0b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth7.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = depth7.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/depth7.gif b/tests/test-images/gif-test-suite/depth7.gif
new file mode 100644
index 000000000..e31caa20c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth7.gif
diff --git a/tests/test-images/gif-test-suite/depth8.conf b/tests/test-images/gif-test-suite/depth8.conf
new file mode 100644
index 000000000..3a8734555
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth8.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = depth8.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/depth8.gif b/tests/test-images/gif-test-suite/depth8.gif
new file mode 100644
index 000000000..f2b1496c8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/depth8.gif
diff --git a/tests/test-images/gif-test-suite/disabled-transparent.conf b/tests/test-images/gif-test-suite/disabled-transparent.conf
new file mode 100644
index 000000000..6ca3eb68a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/disabled-transparent.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = disabled-transparent.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = four-colors.rgba
+
diff --git a/tests/test-images/gif-test-suite/disabled-transparent.gif b/tests/test-images/gif-test-suite/disabled-transparent.gif
new file mode 100644
index 000000000..dbe0e54d9
--- /dev/null
+++ b/tests/test-images/gif-test-suite/disabled-transparent.gif
diff --git a/tests/test-images/gif-test-suite/dispose-keep.conf b/tests/test-images/gif-test-suite/dispose-keep.conf
new file mode 100644
index 000000000..895bb91aa
--- /dev/null
+++ b/tests/test-images/gif-test-suite/dispose-keep.conf
@@ -0,0 +1,27 @@
+# Automatically generated, do not edit!
+[config]
+input = dispose-keep.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation-fill.0.rgba
+delay = 50
+
+[frame1]
+pixels = animation-fill.1.rgba
+delay = 50
+
+[frame2]
+pixels = animation-fill.2.rgba
+delay = 50
+
+[frame3]
+pixels = animation-fill.3.rgba
+delay = 50
+
diff --git a/tests/test-images/gif-test-suite/dispose-keep.gif b/tests/test-images/gif-test-suite/dispose-keep.gif
new file mode 100644
index 000000000..7e77bb87d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/dispose-keep.gif
diff --git a/tests/test-images/gif-test-suite/dispose-none.conf b/tests/test-images/gif-test-suite/dispose-none.conf
new file mode 100644
index 000000000..89bc81d06
--- /dev/null
+++ b/tests/test-images/gif-test-suite/dispose-none.conf
@@ -0,0 +1,27 @@
+# Automatically generated, do not edit!
+[config]
+input = dispose-none.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation-fill.0.rgba
+delay = 50
+
+[frame1]
+pixels = animation-fill.1.rgba
+delay = 50
+
+[frame2]
+pixels = animation-fill.2.rgba
+delay = 50
+
+[frame3]
+pixels = animation-fill.3.rgba
+delay = 50
+
diff --git a/tests/test-images/gif-test-suite/dispose-none.gif b/tests/test-images/gif-test-suite/dispose-none.gif
new file mode 100644
index 000000000..66c346be8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/dispose-none.gif
diff --git a/tests/test-images/gif-test-suite/dispose-restore-background.conf b/tests/test-images/gif-test-suite/dispose-restore-background.conf
new file mode 100644
index 000000000..b2bf30be5
--- /dev/null
+++ b/tests/test-images/gif-test-suite/dispose-restore-background.conf
@@ -0,0 +1,27 @@
+# Automatically generated, do not edit!
+[config]
+input = dispose-restore-background.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation-erase.0.rgba
+delay = 50
+
+[frame1]
+pixels = animation-erase.1.rgba
+delay = 50
+
+[frame2]
+pixels = animation-erase.2.rgba
+delay = 50
+
+[frame3]
+pixels = animation-erase.3.rgba
+delay = 50
+
diff --git a/tests/test-images/gif-test-suite/dispose-restore-background.gif b/tests/test-images/gif-test-suite/dispose-restore-background.gif
new file mode 100644
index 000000000..4ee2622d4
--- /dev/null
+++ b/tests/test-images/gif-test-suite/dispose-restore-background.gif
diff --git a/tests/test-images/gif-test-suite/dispose-restore-previous.conf b/tests/test-images/gif-test-suite/dispose-restore-previous.conf
new file mode 100644
index 000000000..aa6c2da45
--- /dev/null
+++ b/tests/test-images/gif-test-suite/dispose-restore-previous.conf
@@ -0,0 +1,27 @@
+# Automatically generated, do not edit!
+[config]
+input = dispose-restore-previous.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation.0.rgba
+delay = 50
+
+[frame1]
+pixels = animation.1.rgba
+delay = 50
+
+[frame2]
+pixels = animation.2.rgba
+delay = 50
+
+[frame3]
+pixels = animation.3.rgba
+delay = 50
+
diff --git a/tests/test-images/gif-test-suite/dispose-restore-previous.gif b/tests/test-images/gif-test-suite/dispose-restore-previous.gif
new file mode 100644
index 000000000..61ac3afcb
--- /dev/null
+++ b/tests/test-images/gif-test-suite/dispose-restore-previous.gif
diff --git a/tests/test-images/gif-test-suite/double-clears.conf b/tests/test-images/gif-test-suite/double-clears.conf
new file mode 100644
index 000000000..92d610b16
--- /dev/null
+++ b/tests/test-images/gif-test-suite/double-clears.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = double-clears.gif
+version = GIF89a
+width = 8
+height = 8
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = checkerboard.rgba
+
diff --git a/tests/test-images/gif-test-suite/double-clears.gif b/tests/test-images/gif-test-suite/double-clears.gif
new file mode 100644
index 000000000..dcf54c67c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/double-clears.gif
diff --git a/tests/test-images/gif-test-suite/empty.icc b/tests/test-images/gif-test-suite/empty.icc
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tests/test-images/gif-test-suite/empty.icc
diff --git a/tests/test-images/gif-test-suite/empty.xmp b/tests/test-images/gif-test-suite/empty.xmp
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/tests/test-images/gif-test-suite/empty.xmp
diff --git a/tests/test-images/gif-test-suite/extra-data.conf b/tests/test-images/gif-test-suite/extra-data.conf
new file mode 100644
index 000000000..61f3a9f91
--- /dev/null
+++ b/tests/test-images/gif-test-suite/extra-data.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = extra-data.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/extra-data.gif b/tests/test-images/gif-test-suite/extra-data.gif
new file mode 100644
index 000000000..d49327d7b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/extra-data.gif
diff --git a/tests/test-images/gif-test-suite/extra-pixels.conf b/tests/test-images/gif-test-suite/extra-pixels.conf
new file mode 100644
index 000000000..42aa43585
--- /dev/null
+++ b/tests/test-images/gif-test-suite/extra-pixels.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = extra-pixels.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/extra-pixels.gif b/tests/test-images/gif-test-suite/extra-pixels.gif
new file mode 100644
index 000000000..b9bf451e9
--- /dev/null
+++ b/tests/test-images/gif-test-suite/extra-pixels.gif
diff --git a/tests/test-images/gif-test-suite/four-colors-transparent.png b/tests/test-images/gif-test-suite/four-colors-transparent.png
new file mode 100644
index 000000000..630d7f7b1
--- /dev/null
+++ b/tests/test-images/gif-test-suite/four-colors-transparent.png
diff --git a/tests/test-images/gif-test-suite/four-colors-transparent.rgba b/tests/test-images/gif-test-suite/four-colors-transparent.rgba
new file mode 100644
index 000000000..f1b0c5288
--- /dev/null
+++ b/tests/test-images/gif-test-suite/four-colors-transparent.rgba
diff --git a/tests/test-images/gif-test-suite/four-colors.conf b/tests/test-images/gif-test-suite/four-colors.conf
new file mode 100644
index 000000000..3e011c78b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/four-colors.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = four-colors.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = four-colors.rgba
+
diff --git a/tests/test-images/gif-test-suite/four-colors.gif b/tests/test-images/gif-test-suite/four-colors.gif
new file mode 100644
index 000000000..15d0d1cf3
--- /dev/null
+++ b/tests/test-images/gif-test-suite/four-colors.gif
diff --git a/tests/test-images/gif-test-suite/four-colors.png b/tests/test-images/gif-test-suite/four-colors.png
new file mode 100644
index 000000000..d6d6ce3e9
--- /dev/null
+++ b/tests/test-images/gif-test-suite/four-colors.png
diff --git a/tests/test-images/gif-test-suite/four-colors.rgba b/tests/test-images/gif-test-suite/four-colors.rgba
new file mode 100644
index 000000000..f3a22e901
--- /dev/null
+++ b/tests/test-images/gif-test-suite/four-colors.rgba
diff --git a/tests/test-images/gif-test-suite/gif87a-animation.conf b/tests/test-images/gif-test-suite/gif87a-animation.conf
new file mode 100644
index 000000000..0909238ae
--- /dev/null
+++ b/tests/test-images/gif-test-suite/gif87a-animation.conf
@@ -0,0 +1,23 @@
+# Automatically generated, do not edit!
+[config]
+input = gif87a-animation.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = infinite
+force-animation = yes
+frames = frame0,frame1,frame2,frame3
+
+[frame0]
+pixels = animation.0.rgba
+
+[frame1]
+pixels = animation.1.rgba
+
+[frame2]
+pixels = animation.2.rgba
+
+[frame3]
+pixels = animation.3.rgba
+
diff --git a/tests/test-images/gif-test-suite/gif87a-animation.gif b/tests/test-images/gif-test-suite/gif87a-animation.gif
new file mode 100644
index 000000000..900c4e53e
--- /dev/null
+++ b/tests/test-images/gif-test-suite/gif87a-animation.gif
diff --git a/tests/test-images/gif-test-suite/gif87a.conf b/tests/test-images/gif-test-suite/gif87a.conf
new file mode 100644
index 000000000..5340d20dc
--- /dev/null
+++ b/tests/test-images/gif-test-suite/gif87a.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = gif87a.gif
+version = GIF87a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/gif87a.gif b/tests/test-images/gif-test-suite/gif87a.gif
new file mode 100644
index 000000000..628ee8815
--- /dev/null
+++ b/tests/test-images/gif-test-suite/gif87a.gif
diff --git a/tests/test-images/gif-test-suite/high-color.conf b/tests/test-images/gif-test-suite/high-color.conf
new file mode 100644
index 000000000..e9d5b1b15
--- /dev/null
+++ b/tests/test-images/gif-test-suite/high-color.conf
@@ -0,0 +1,13 @@
+# Automatically generated, do not edit!
+[config]
+input = high-color.gif
+version = GIF89a
+width = 32
+height = 32
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = high-color.rgba
+
diff --git a/tests/test-images/gif-test-suite/high-color.gif b/tests/test-images/gif-test-suite/high-color.gif
new file mode 100644
index 000000000..3e2af1874
--- /dev/null
+++ b/tests/test-images/gif-test-suite/high-color.gif
diff --git a/tests/test-images/gif-test-suite/high-color.png b/tests/test-images/gif-test-suite/high-color.png
new file mode 100644
index 000000000..15e8bdc5a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/high-color.png
diff --git a/tests/test-images/gif-test-suite/high-color.rgba b/tests/test-images/gif-test-suite/high-color.rgba
new file mode 100644
index 000000000..7e02c2ae2
--- /dev/null
+++ b/tests/test-images/gif-test-suite/high-color.rgba
diff --git a/tests/test-images/gif-test-suite/icc-color-profile-empty.conf b/tests/test-images/gif-test-suite/icc-color-profile-empty.conf
new file mode 100644
index 000000000..52946a57d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/icc-color-profile-empty.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = icc-color-profile-empty.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+color-profile = empty.icc
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/icc-color-profile-empty.gif b/tests/test-images/gif-test-suite/icc-color-profile-empty.gif
new file mode 100644
index 000000000..db640482a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/icc-color-profile-empty.gif
diff --git a/tests/test-images/gif-test-suite/icc-color-profile.conf b/tests/test-images/gif-test-suite/icc-color-profile.conf
new file mode 100644
index 000000000..b1f2f0f54
--- /dev/null
+++ b/tests/test-images/gif-test-suite/icc-color-profile.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = icc-color-profile.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+color-profile = sRGB.icc
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/icc-color-profile.gif b/tests/test-images/gif-test-suite/icc-color-profile.gif
new file mode 100644
index 000000000..d0b1126c9
--- /dev/null
+++ b/tests/test-images/gif-test-suite/icc-color-profile.gif
diff --git a/tests/test-images/gif-test-suite/image-inside-bg.conf b/tests/test-images/gif-test-suite/image-inside-bg.conf
new file mode 100644
index 000000000..cdbfbcd66
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-inside-bg.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = image-inside-bg.gif
+version = GIF89a
+width = 2
+height = 2
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = image-inside-bg.rgba
+
diff --git a/tests/test-images/gif-test-suite/image-inside-bg.gif b/tests/test-images/gif-test-suite/image-inside-bg.gif
new file mode 100644
index 000000000..1820049d2
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-inside-bg.gif
diff --git a/tests/test-images/gif-test-suite/image-inside-bg.png b/tests/test-images/gif-test-suite/image-inside-bg.png
new file mode 100644
index 000000000..ee72b6687
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-inside-bg.png
diff --git a/tests/test-images/gif-test-suite/image-inside-bg.rgba b/tests/test-images/gif-test-suite/image-inside-bg.rgba
new file mode 100644
index 000000000..2a13cf444
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-inside-bg.rgba
diff --git a/tests/test-images/gif-test-suite/image-outside-bg.conf b/tests/test-images/gif-test-suite/image-outside-bg.conf
new file mode 100644
index 000000000..96cafdeb8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-outside-bg.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = image-outside-bg.gif
+version = GIF89a
+width = 2
+height = 2
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = image-outside-bg.rgba
+
diff --git a/tests/test-images/gif-test-suite/image-outside-bg.gif b/tests/test-images/gif-test-suite/image-outside-bg.gif
new file mode 100644
index 000000000..df74b41db
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-outside-bg.gif
diff --git a/tests/test-images/gif-test-suite/image-outside-bg.png b/tests/test-images/gif-test-suite/image-outside-bg.png
new file mode 100644
index 000000000..116afca79
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-outside-bg.png
diff --git a/tests/test-images/gif-test-suite/image-outside-bg.rgba b/tests/test-images/gif-test-suite/image-outside-bg.rgba
new file mode 100644
index 000000000..01d633b27
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-outside-bg.rgba
diff --git a/tests/test-images/gif-test-suite/image-overlap-bg.conf b/tests/test-images/gif-test-suite/image-overlap-bg.conf
new file mode 100644
index 000000000..14c636fea
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-overlap-bg.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = image-overlap-bg.gif
+version = GIF89a
+width = 2
+height = 2
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = image-overlap-bg.rgba
+
diff --git a/tests/test-images/gif-test-suite/image-overlap-bg.gif b/tests/test-images/gif-test-suite/image-overlap-bg.gif
new file mode 100644
index 000000000..a20ee2435
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-overlap-bg.gif
diff --git a/tests/test-images/gif-test-suite/image-overlap-bg.png b/tests/test-images/gif-test-suite/image-overlap-bg.png
new file mode 100644
index 000000000..2a3ed7f10
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-overlap-bg.png
diff --git a/tests/test-images/gif-test-suite/image-overlap-bg.rgba b/tests/test-images/gif-test-suite/image-overlap-bg.rgba
new file mode 100644
index 000000000..349866fa7
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-overlap-bg.rgba
diff --git a/tests/test-images/gif-test-suite/image-zero-height.conf b/tests/test-images/gif-test-suite/image-zero-height.conf
new file mode 100644
index 000000000..710b83ebc
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-zero-height.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = image-zero-height.gif
+version = GIF89a
+width = 1
+height = 1
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = transparent-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/image-zero-height.gif b/tests/test-images/gif-test-suite/image-zero-height.gif
new file mode 100644
index 000000000..ddd3c43e8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-zero-height.gif
diff --git a/tests/test-images/gif-test-suite/image-zero-size.conf b/tests/test-images/gif-test-suite/image-zero-size.conf
new file mode 100644
index 000000000..1cc1503a0
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-zero-size.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = image-zero-size.gif
+version = GIF89a
+width = 1
+height = 1
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = transparent-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/image-zero-size.gif b/tests/test-images/gif-test-suite/image-zero-size.gif
new file mode 100644
index 000000000..8cb8c9e80
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-zero-size.gif
diff --git a/tests/test-images/gif-test-suite/image-zero-width.conf b/tests/test-images/gif-test-suite/image-zero-width.conf
new file mode 100644
index 000000000..78646bb92
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-zero-width.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = image-zero-width.gif
+version = GIF89a
+width = 1
+height = 1
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = transparent-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/image-zero-width.gif b/tests/test-images/gif-test-suite/image-zero-width.gif
new file mode 100644
index 000000000..ba61320c8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/image-zero-width.gif
diff --git a/tests/test-images/gif-test-suite/images-combine.conf b/tests/test-images/gif-test-suite/images-combine.conf
new file mode 100644
index 000000000..de4a5b7f7
--- /dev/null
+++ b/tests/test-images/gif-test-suite/images-combine.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = images-combine.gif
+version = GIF89a
+width = 2
+height = 2
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = four-colors.rgba
+
diff --git a/tests/test-images/gif-test-suite/images-combine.gif b/tests/test-images/gif-test-suite/images-combine.gif
new file mode 100644
index 000000000..288e5891b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/images-combine.gif
diff --git a/tests/test-images/gif-test-suite/images-overlap.conf b/tests/test-images/gif-test-suite/images-overlap.conf
new file mode 100644
index 000000000..0a510c53b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/images-overlap.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = images-overlap.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/images-overlap.gif b/tests/test-images/gif-test-suite/images-overlap.gif
new file mode 100644
index 000000000..6dd1b2a20
--- /dev/null
+++ b/tests/test-images/gif-test-suite/images-overlap.gif
diff --git a/tests/test-images/gif-test-suite/interlace.conf b/tests/test-images/gif-test-suite/interlace.conf
new file mode 100644
index 000000000..13279b3b3
--- /dev/null
+++ b/tests/test-images/gif-test-suite/interlace.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = interlace.gif
+version = GIF89a
+width = 16
+height = 16
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = all-reds.rgba
+
diff --git a/tests/test-images/gif-test-suite/interlace.gif b/tests/test-images/gif-test-suite/interlace.gif
new file mode 100644
index 000000000..c2116d8b4
--- /dev/null
+++ b/tests/test-images/gif-test-suite/interlace.gif
diff --git a/tests/test-images/gif-test-suite/invalid-ascii-comment.conf b/tests/test-images/gif-test-suite/invalid-ascii-comment.conf
new file mode 100644
index 000000000..2cb284ca7
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-ascii-comment.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = invalid-ascii-comment.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+comment = 'ÿ'
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/invalid-ascii-comment.gif b/tests/test-images/gif-test-suite/invalid-ascii-comment.gif
new file mode 100644
index 000000000..a0398afcb
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-ascii-comment.gif
diff --git a/tests/test-images/gif-test-suite/invalid-background.conf b/tests/test-images/gif-test-suite/invalid-background.conf
new file mode 100644
index 000000000..eaaadf31c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-background.conf
@@ -0,0 +1,13 @@
+# Automatically generated, do not edit!
+[config]
+input = invalid-background.gif
+version = GIF89a
+width = 1
+height = 1
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/invalid-background.gif b/tests/test-images/gif-test-suite/invalid-background.gif
new file mode 100644
index 000000000..4943c726a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-background.gif
diff --git a/tests/test-images/gif-test-suite/invalid-colors.conf b/tests/test-images/gif-test-suite/invalid-colors.conf
new file mode 100644
index 000000000..7fff609c0
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-colors.conf
@@ -0,0 +1,11 @@
+# Automatically generated, do not edit!
+[config]
+input = invalid-colors.gif
+version = GIF89a
+width = 1
+height = 1
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = 
+
diff --git a/tests/test-images/gif-test-suite/invalid-colors.gif b/tests/test-images/gif-test-suite/invalid-colors.gif
new file mode 100644
index 000000000..c3111525a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-colors.gif
diff --git a/tests/test-images/gif-test-suite/invalid-transparent.conf b/tests/test-images/gif-test-suite/invalid-transparent.conf
new file mode 100644
index 000000000..b62c96b76
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-transparent.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = invalid-transparent.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = four-colors.rgba
+
diff --git a/tests/test-images/gif-test-suite/invalid-transparent.gif b/tests/test-images/gif-test-suite/invalid-transparent.gif
new file mode 100644
index 000000000..ce02c1aaa
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-transparent.gif
diff --git a/tests/test-images/gif-test-suite/invalid-utf8-comment.conf b/tests/test-images/gif-test-suite/invalid-utf8-comment.conf
new file mode 100644
index 000000000..2df010f44
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-utf8-comment.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = invalid-utf8-comment.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+comment = 'Ã('
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/invalid-utf8-comment.gif b/tests/test-images/gif-test-suite/invalid-utf8-comment.gif
new file mode 100644
index 000000000..893df1153
--- /dev/null
+++ b/tests/test-images/gif-test-suite/invalid-utf8-comment.gif
diff --git a/tests/test-images/gif-test-suite/large-codes.conf b/tests/test-images/gif-test-suite/large-codes.conf
new file mode 100644
index 000000000..5771d585d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/large-codes.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = large-codes.gif
+version = GIF89a
+width = 100
+height = 100
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = random-image.rgba
+
diff --git a/tests/test-images/gif-test-suite/large-codes.gif b/tests/test-images/gif-test-suite/large-codes.gif
new file mode 100644
index 000000000..15ae2f4c8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/large-codes.gif
diff --git a/tests/test-images/gif-test-suite/large-comment.conf b/tests/test-images/gif-test-suite/large-comment.conf
new file mode 100644
index 000000000..1c0bb5061
--- /dev/null
+++ b/tests/test-images/gif-test-suite/large-comment.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = large-comment.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+comment = 'Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! 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Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World!'
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/large-comment.gif b/tests/test-images/gif-test-suite/large-comment.gif
new file mode 100644
index 000000000..899174231
--- /dev/null
+++ b/tests/test-images/gif-test-suite/large-comment.gif
diff --git a/tests/test-images/gif-test-suite/local-color-table.conf b/tests/test-images/gif-test-suite/local-color-table.conf
new file mode 100644
index 000000000..876ce8bce
--- /dev/null
+++ b/tests/test-images/gif-test-suite/local-color-table.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = local-color-table.gif
+version = GIF89a
+width = 1
+height = 1
+background = #ff0000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/local-color-table.gif b/tests/test-images/gif-test-suite/local-color-table.gif
new file mode 100644
index 000000000..7b64e43ca
--- /dev/null
+++ b/tests/test-images/gif-test-suite/local-color-table.gif
diff --git a/tests/test-images/gif-test-suite/loop-animexts.conf b/tests/test-images/gif-test-suite/loop-animexts.conf
new file mode 100644
index 000000000..ae8ffdd3a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-animexts.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = loop-animexts.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = infinite
+buffer-size = 1024
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/loop-animexts.gif b/tests/test-images/gif-test-suite/loop-animexts.gif
new file mode 100644
index 000000000..502cf1761
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-animexts.gif
diff --git a/tests/test-images/gif-test-suite/loop-buffer.conf b/tests/test-images/gif-test-suite/loop-buffer.conf
new file mode 100644
index 000000000..7cf087ffc
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-buffer.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = loop-buffer.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = infinite
+buffer-size = 1024
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/loop-buffer.gif b/tests/test-images/gif-test-suite/loop-buffer.gif
new file mode 100644
index 000000000..148ee085a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-buffer.gif
diff --git a/tests/test-images/gif-test-suite/loop-buffer_max.conf b/tests/test-images/gif-test-suite/loop-buffer_max.conf
new file mode 100644
index 000000000..1f345ace4
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-buffer_max.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = loop-buffer_max.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = infinite
+buffer-size = 4294967295
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/loop-buffer_max.gif b/tests/test-images/gif-test-suite/loop-buffer_max.gif
new file mode 100644
index 000000000..548c23648
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-buffer_max.gif
diff --git a/tests/test-images/gif-test-suite/loop-infinite.conf b/tests/test-images/gif-test-suite/loop-infinite.conf
new file mode 100644
index 000000000..2bc733184
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-infinite.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = loop-infinite.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = infinite
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/loop-infinite.gif b/tests/test-images/gif-test-suite/loop-infinite.gif
new file mode 100644
index 000000000..7471d57db
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-infinite.gif
diff --git a/tests/test-images/gif-test-suite/loop-max.conf b/tests/test-images/gif-test-suite/loop-max.conf
new file mode 100644
index 000000000..754825382
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-max.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = loop-max.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 65535
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/loop-max.gif b/tests/test-images/gif-test-suite/loop-max.gif
new file mode 100644
index 000000000..1f9657f62
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-max.gif
diff --git a/tests/test-images/gif-test-suite/loop-once.conf b/tests/test-images/gif-test-suite/loop-once.conf
new file mode 100644
index 000000000..919c4fe77
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-once.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = loop-once.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 1
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/loop-once.gif b/tests/test-images/gif-test-suite/loop-once.gif
new file mode 100644
index 000000000..38fb359a2
--- /dev/null
+++ b/tests/test-images/gif-test-suite/loop-once.gif
diff --git a/tests/test-images/gif-test-suite/many-clears.conf b/tests/test-images/gif-test-suite/many-clears.conf
new file mode 100644
index 000000000..62cbd90f3
--- /dev/null
+++ b/tests/test-images/gif-test-suite/many-clears.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = many-clears.gif
+version = GIF89a
+width = 8
+height = 8
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = checkerboard.rgba
+
diff --git a/tests/test-images/gif-test-suite/many-clears.gif b/tests/test-images/gif-test-suite/many-clears.gif
new file mode 100644
index 000000000..3adcb9691
--- /dev/null
+++ b/tests/test-images/gif-test-suite/many-clears.gif
diff --git a/tests/test-images/gif-test-suite/max-codes.conf b/tests/test-images/gif-test-suite/max-codes.conf
new file mode 100644
index 000000000..4e4ea74c0
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-codes.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = max-codes.gif
+version = GIF89a
+width = 100
+height = 100
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = random-image.rgba
+
diff --git a/tests/test-images/gif-test-suite/max-codes.gif b/tests/test-images/gif-test-suite/max-codes.gif
new file mode 100644
index 000000000..bd3f8d2da
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-codes.gif
diff --git a/tests/test-images/gif-test-suite/max-height.conf b/tests/test-images/gif-test-suite/max-height.conf
new file mode 100644
index 000000000..55ed8f445
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-height.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = max-height.gif
+version = GIF89a
+width = 1
+height = 65535
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = max-height.rgba
+
diff --git a/tests/test-images/gif-test-suite/max-height.gif b/tests/test-images/gif-test-suite/max-height.gif
new file mode 100644
index 000000000..586d03071
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-height.gif
diff --git a/tests/test-images/gif-test-suite/max-height.png b/tests/test-images/gif-test-suite/max-height.png
new file mode 100644
index 000000000..4cbbd31d8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-height.png
diff --git a/tests/test-images/gif-test-suite/max-height.rgba b/tests/test-images/gif-test-suite/max-height.rgba
new file mode 100644
index 000000000..5483b4492
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-height.rgba
@@ -0,0 +1 @@
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ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
\ No newline at end of file
diff --git a/tests/test-images/gif-test-suite/max-size.conf b/tests/test-images/gif-test-suite/max-size.conf
new file mode 100644
index 000000000..94e56804d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-size.conf
@@ -0,0 +1,11 @@
+# Automatically generated, do not edit!
+[config]
+input = max-size.gif
+version = GIF89a
+width = 65535
+height = 65535
+background = #000000
+loop-count = 0
+force-animation = no
+frames = 
+
diff --git a/tests/test-images/gif-test-suite/max-size.gif b/tests/test-images/gif-test-suite/max-size.gif
new file mode 100644
index 000000000..e408b69ae
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-size.gif
diff --git a/tests/test-images/gif-test-suite/max-width.conf b/tests/test-images/gif-test-suite/max-width.conf
new file mode 100644
index 000000000..fbab60f8a
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-width.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = max-width.gif
+version = GIF89a
+width = 65535
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = max-width.rgba
+
diff --git a/tests/test-images/gif-test-suite/max-width.gif b/tests/test-images/gif-test-suite/max-width.gif
new file mode 100644
index 000000000..6ec2fdd49
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-width.gif
diff --git a/tests/test-images/gif-test-suite/max-width.png b/tests/test-images/gif-test-suite/max-width.png
new file mode 100644
index 000000000..a5e19bbfb
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-width.png
diff --git a/tests/test-images/gif-test-suite/max-width.rgba b/tests/test-images/gif-test-suite/max-width.rgba
new file mode 100644
index 000000000..5483b4492
--- /dev/null
+++ b/tests/test-images/gif-test-suite/max-width.rgba
@@ -0,0 +1 @@
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ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
\ No newline at end of file
diff --git a/tests/test-images/gif-test-suite/missing-pixels.conf b/tests/test-images/gif-test-suite/missing-pixels.conf
new file mode 100644
index 000000000..114d4b065
--- /dev/null
+++ b/tests/test-images/gif-test-suite/missing-pixels.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = missing-pixels.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = missing-pixels.rgba
+
diff --git a/tests/test-images/gif-test-suite/missing-pixels.gif b/tests/test-images/gif-test-suite/missing-pixels.gif
new file mode 100644
index 000000000..aa21ccda8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/missing-pixels.gif
diff --git a/tests/test-images/gif-test-suite/missing-pixels.png b/tests/test-images/gif-test-suite/missing-pixels.png
new file mode 100644
index 000000000..93afc1a87
--- /dev/null
+++ b/tests/test-images/gif-test-suite/missing-pixels.png
diff --git a/tests/test-images/gif-test-suite/missing-pixels.rgba b/tests/test-images/gif-test-suite/missing-pixels.rgba
new file mode 100644
index 000000000..6f3ee57a8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/missing-pixels.rgba
diff --git a/tests/test-images/gif-test-suite/no-clear-and-eoi.conf b/tests/test-images/gif-test-suite/no-clear-and-eoi.conf
new file mode 100644
index 000000000..318c807f8
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-clear-and-eoi.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = no-clear-and-eoi.gif
+version = GIF89a
+width = 2
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-hline2.rgba
+
diff --git a/tests/test-images/gif-test-suite/no-clear-and-eoi.gif b/tests/test-images/gif-test-suite/no-clear-and-eoi.gif
new file mode 100644
index 000000000..3e9080899
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-clear-and-eoi.gif
diff --git a/tests/test-images/gif-test-suite/no-clear.conf b/tests/test-images/gif-test-suite/no-clear.conf
new file mode 100644
index 000000000..c90de2adb
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-clear.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = no-clear.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/no-clear.gif b/tests/test-images/gif-test-suite/no-clear.gif
new file mode 100644
index 000000000..62b72719b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-clear.gif
diff --git a/tests/test-images/gif-test-suite/no-data.conf b/tests/test-images/gif-test-suite/no-data.conf
new file mode 100644
index 000000000..da6bec7ce
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-data.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = no-data.gif
+version = GIF89a
+width = 1
+height = 1
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = transparent-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/no-data.gif b/tests/test-images/gif-test-suite/no-data.gif
new file mode 100644
index 000000000..bb3d1f7dc
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-data.gif
diff --git a/tests/test-images/gif-test-suite/no-eoi.conf b/tests/test-images/gif-test-suite/no-eoi.conf
new file mode 100644
index 000000000..834e9f11d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-eoi.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = no-eoi.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/no-eoi.gif b/tests/test-images/gif-test-suite/no-eoi.gif
new file mode 100644
index 000000000..d3e5f194e
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-eoi.gif
diff --git a/tests/test-images/gif-test-suite/no-global-color-table.conf b/tests/test-images/gif-test-suite/no-global-color-table.conf
new file mode 100644
index 000000000..97aca803c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-global-color-table.conf
@@ -0,0 +1,13 @@
+# Automatically generated, do not edit!
+[config]
+input = no-global-color-table.gif
+version = GIF89a
+width = 1
+height = 1
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/no-global-color-table.gif b/tests/test-images/gif-test-suite/no-global-color-table.gif
new file mode 100644
index 000000000..f8052afce
--- /dev/null
+++ b/tests/test-images/gif-test-suite/no-global-color-table.gif
diff --git a/tests/test-images/gif-test-suite/nul-application-extension.conf b/tests/test-images/gif-test-suite/nul-application-extension.conf
new file mode 100644
index 000000000..bb9e9668f
--- /dev/null
+++ b/tests/test-images/gif-test-suite/nul-application-extension.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = nul-application-extension.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/nul-application-extension.gif b/tests/test-images/gif-test-suite/nul-application-extension.gif
new file mode 100644
index 000000000..176ae31e4
--- /dev/null
+++ b/tests/test-images/gif-test-suite/nul-application-extension.gif
diff --git a/tests/test-images/gif-test-suite/nul-comment.conf b/tests/test-images/gif-test-suite/nul-comment.conf
new file mode 100644
index 000000000..09ff6ecd1
--- /dev/null
+++ b/tests/test-images/gif-test-suite/nul-comment.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = nul-comment.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+comment = '\x00'
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/nul-comment.gif b/tests/test-images/gif-test-suite/nul-comment.gif
new file mode 100644
index 000000000..a0024688f
--- /dev/null
+++ b/tests/test-images/gif-test-suite/nul-comment.gif
diff --git a/tests/test-images/gif-test-suite/plain-text.conf b/tests/test-images/gif-test-suite/plain-text.conf
new file mode 100644
index 000000000..8a5be240c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/plain-text.conf
@@ -0,0 +1,11 @@
+# Automatically generated, do not edit!
+[config]
+input = plain-text.gif
+version = GIF89a
+width = 40
+height = 8
+background = #000000
+loop-count = 0
+force-animation = no
+frames = 
+
diff --git a/tests/test-images/gif-test-suite/plain-text.gif b/tests/test-images/gif-test-suite/plain-text.gif
new file mode 100644
index 000000000..5be1cb07c
--- /dev/null
+++ b/tests/test-images/gif-test-suite/plain-text.gif
diff --git a/tests/test-images/gif-test-suite/random-image.png b/tests/test-images/gif-test-suite/random-image.png
new file mode 100644
index 000000000..f06d739ad
--- /dev/null
+++ b/tests/test-images/gif-test-suite/random-image.png
diff --git a/tests/test-images/gif-test-suite/random-image.rgba b/tests/test-images/gif-test-suite/random-image.rgba
new file mode 100644
index 000000000..54be49e63
--- /dev/null
+++ b/tests/test-images/gif-test-suite/random-image.rgba
diff --git a/tests/test-images/gif-test-suite/random_image.png b/tests/test-images/gif-test-suite/random_image.png
new file mode 100644
index 000000000..d2eea70cf
--- /dev/null
+++ b/tests/test-images/gif-test-suite/random_image.png
diff --git a/tests/test-images/gif-test-suite/sRGB.icc b/tests/test-images/gif-test-suite/sRGB.icc
new file mode 100644
index 000000000..f2fd6d0d2
--- /dev/null
+++ b/tests/test-images/gif-test-suite/sRGB.icc
diff --git a/tests/test-images/gif-test-suite/test.xmp b/tests/test-images/gif-test-suite/test.xmp
new file mode 100644
index 000000000..a8e4a76db
--- /dev/null
+++ b/tests/test-images/gif-test-suite/test.xmp
@@ -0,0 +1,8 @@
+<?xpacket begin="?" id="W5M0MpCehiHzreSzNTczkc9d"?>
+<x:xmpmeta xmlns:x="adobe:ns:meta/">
+   <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
+     <rdf:Description rdf:about="" xmlns:xmp="http://ns.adobe.com/xap/1.0/">
+       <xmp:CreatorTool>PyGIF</xmp:CreatorTool>
+     </rdf:Description>
+   </rdf:RDF>
+</x:xmpmeta>
diff --git a/tests/test-images/gif-test-suite/transparent-dot.png b/tests/test-images/gif-test-suite/transparent-dot.png
new file mode 100644
index 000000000..35a340b65
--- /dev/null
+++ b/tests/test-images/gif-test-suite/transparent-dot.png
diff --git a/tests/test-images/gif-test-suite/transparent-dot.rgba b/tests/test-images/gif-test-suite/transparent-dot.rgba
new file mode 100644
index 000000000..593f4708d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/transparent-dot.rgba
diff --git a/tests/test-images/gif-test-suite/transparent.conf b/tests/test-images/gif-test-suite/transparent.conf
new file mode 100644
index 000000000..58fcee7c4
--- /dev/null
+++ b/tests/test-images/gif-test-suite/transparent.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = transparent.gif
+version = GIF89a
+width = 2
+height = 2
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = four-colors-transparent.rgba
+
diff --git a/tests/test-images/gif-test-suite/transparent.gif b/tests/test-images/gif-test-suite/transparent.gif
new file mode 100644
index 000000000..d8be13e4b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/transparent.gif
diff --git a/tests/test-images/gif-test-suite/unknown-application-extension.conf b/tests/test-images/gif-test-suite/unknown-application-extension.conf
new file mode 100644
index 000000000..b60b4bf5d
--- /dev/null
+++ b/tests/test-images/gif-test-suite/unknown-application-extension.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = unknown-application-extension.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/unknown-application-extension.gif b/tests/test-images/gif-test-suite/unknown-application-extension.gif
new file mode 100644
index 000000000..9204606dd
--- /dev/null
+++ b/tests/test-images/gif-test-suite/unknown-application-extension.gif
diff --git a/tests/test-images/gif-test-suite/unknown-extension.conf b/tests/test-images/gif-test-suite/unknown-extension.conf
new file mode 100644
index 000000000..aec180f06
--- /dev/null
+++ b/tests/test-images/gif-test-suite/unknown-extension.conf
@@ -0,0 +1,14 @@
+# Automatically generated, do not edit!
+[config]
+input = unknown-extension.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/unknown-extension.gif b/tests/test-images/gif-test-suite/unknown-extension.gif
new file mode 100644
index 000000000..8518ff6c6
--- /dev/null
+++ b/tests/test-images/gif-test-suite/unknown-extension.gif
diff --git a/tests/test-images/gif-test-suite/white-dot.png b/tests/test-images/gif-test-suite/white-dot.png
new file mode 100644
index 000000000..58a2d46a9
--- /dev/null
+++ b/tests/test-images/gif-test-suite/white-dot.png
diff --git a/tests/test-images/gif-test-suite/white-dot.rgba b/tests/test-images/gif-test-suite/white-dot.rgba
new file mode 100644
index 000000000..7bde8641b
--- /dev/null
+++ b/tests/test-images/gif-test-suite/white-dot.rgba
@@ -0,0 +1 @@
+ÿÿÿÿ
\ No newline at end of file
diff --git a/tests/test-images/gif-test-suite/white-hline2.png b/tests/test-images/gif-test-suite/white-hline2.png
new file mode 100644
index 000000000..a91c0b707
--- /dev/null
+++ b/tests/test-images/gif-test-suite/white-hline2.png
diff --git a/tests/test-images/gif-test-suite/white-hline2.rgba b/tests/test-images/gif-test-suite/white-hline2.rgba
new file mode 100644
index 000000000..8663f7de5
--- /dev/null
+++ b/tests/test-images/gif-test-suite/white-hline2.rgba
@@ -0,0 +1 @@
+ÿÿÿÿÿÿÿÿ
\ No newline at end of file
diff --git a/tests/test-images/gif-test-suite/xmp-data-empty.conf b/tests/test-images/gif-test-suite/xmp-data-empty.conf
new file mode 100644
index 000000000..854f99d43
--- /dev/null
+++ b/tests/test-images/gif-test-suite/xmp-data-empty.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = xmp-data-empty.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+xmp-data = empty.xmp
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/xmp-data-empty.gif b/tests/test-images/gif-test-suite/xmp-data-empty.gif
new file mode 100644
index 000000000..6a7a23d81
--- /dev/null
+++ b/tests/test-images/gif-test-suite/xmp-data-empty.gif
diff --git a/tests/test-images/gif-test-suite/xmp-data.conf b/tests/test-images/gif-test-suite/xmp-data.conf
new file mode 100644
index 000000000..8be08553f
--- /dev/null
+++ b/tests/test-images/gif-test-suite/xmp-data.conf
@@ -0,0 +1,15 @@
+# Automatically generated, do not edit!
+[config]
+input = xmp-data.gif
+version = GIF89a
+width = 1
+height = 1
+background = #000000
+loop-count = 0
+xmp-data = test.xmp
+force-animation = no
+frames = frame0
+
+[frame0]
+pixels = white-dot.rgba
+
diff --git a/tests/test-images/gif-test-suite/xmp-data.gif b/tests/test-images/gif-test-suite/xmp-data.gif
new file mode 100644
index 000000000..80535f7af
--- /dev/null
+++ b/tests/test-images/gif-test-suite/xmp-data.gif
diff --git a/tests/test-images/gif-test-suite/zero-height.conf b/tests/test-images/gif-test-suite/zero-height.conf
new file mode 100644
index 000000000..296c74bbe
--- /dev/null
+++ b/tests/test-images/gif-test-suite/zero-height.conf
@@ -0,0 +1,11 @@
+# Automatically generated, do not edit!
+[config]
+input = zero-height.gif
+version = GIF89a
+width = 1
+height = 0
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = 
+
diff --git a/tests/test-images/gif-test-suite/zero-height.gif b/tests/test-images/gif-test-suite/zero-height.gif
new file mode 100644
index 000000000..5c5a351a0
--- /dev/null
+++ b/tests/test-images/gif-test-suite/zero-height.gif
diff --git a/tests/test-images/gif-test-suite/zero-size.conf b/tests/test-images/gif-test-suite/zero-size.conf
new file mode 100644
index 000000000..cb8f9a477
--- /dev/null
+++ b/tests/test-images/gif-test-suite/zero-size.conf
@@ -0,0 +1,11 @@
+# Automatically generated, do not edit!
+[config]
+input = zero-size.gif
+version = GIF89a
+width = 0
+height = 0
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = 
+
diff --git a/tests/test-images/gif-test-suite/zero-size.gif b/tests/test-images/gif-test-suite/zero-size.gif
new file mode 100644
index 000000000..52d939eeb
--- /dev/null
+++ b/tests/test-images/gif-test-suite/zero-size.gif
diff --git a/tests/test-images/gif-test-suite/zero-width.conf b/tests/test-images/gif-test-suite/zero-width.conf
new file mode 100644
index 000000000..f9e3e09c0
--- /dev/null
+++ b/tests/test-images/gif-test-suite/zero-width.conf
@@ -0,0 +1,11 @@
+# Automatically generated, do not edit!
+[config]
+input = zero-width.gif
+version = GIF89a
+width = 0
+height = 1
+background = #ffffff
+loop-count = 0
+force-animation = no
+frames = 
+
diff --git a/tests/test-images/gif-test-suite/zero-width.gif b/tests/test-images/gif-test-suite/zero-width.gif
new file mode 100644
index 000000000..0c965d4a5
--- /dev/null
+++ b/tests/test-images/gif-test-suite/zero-width.gif