Add bounding box module

Implements a replacement for the BoundingBox
data type in libchamplain.

2 files changed, 155 insertions, 2 deletions

diff --git a/tests/boundingBoxTest.js b/tests/boundingBoxTest.js
new file mode 100644
index 00000000..d8a605e1
--- /dev/null
+++ b/tests/boundingBoxTest.js
@@ -0,0 +1,153 @@
+/* -*- Mode: JS2; indent-tabs-mode: nil; js2-basic-offset: 4 -*- */
+/* vim: set et ts=4 sw=4: */
+/*
+ * Copyright (c) 2020 Marcus Lundblad
+ *
+ * GNOME Maps 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.
+ *
+ * GNOME Maps 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 GNOME Maps; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Marcus Lundblad <ml@update.uu.se>
+ */
+
+const JsUnit = imports.jsUnit;
+
+const BoundingBox = imports.boundingBox;
+const Constants = imports.constants;
+
+function main() {
+    constructTest();
+    copyTest();
+    setTest();
+    getCenterTest();
+    composeTest();
+    extendTest();
+    isValidTest();
+    coversTest();
+}
+
+function constructTest() {
+    let bbox = new BoundingBox.BoundingBox({ top: 60.0, left: 15.0,
+                                             bottom: 59.0, right: 16.0 });
+
+    JsUnit.assertEquals(60.0, bbox.top);
+    JsUnit.assertEquals(15.0, bbox.left);
+    JsUnit.assertEquals(59.0, bbox.bottom);
+    JsUnit.assertEquals(16.0, bbox.right);
+
+    // test default values
+    bbox = new BoundingBox.BoundingBox();
+
+    JsUnit.assertEquals(Constants.MIN_LATITUDE, bbox.top);
+    JsUnit.assertEquals(Constants.MAX_LONGITUDE, bbox.left);
+    JsUnit.assertEquals(Constants.MAX_LATITUDE, bbox.bottom);
+    JsUnit.assertEquals(Constants.MIN_LONGITUDE, bbox.right);
+}
+
+function copyTest() {
+    let bbox = new BoundingBox.BoundingBox({ top: 60.0, left: 15.0,
+                                             bottom: 59.0, right: 16.0 });
+    let copy = bbox.copy();
+
+    // update original box
+    bbox.top = 65.0;
+    bbox.left = 16.0;
+    bbox.bottom = 55.0;
+    bbox.right = 17.0;
+
+    // copy should be uneffected
+    JsUnit.assertEquals(60.0, copy.top);
+    JsUnit.assertEquals(15.0, copy.left);
+    JsUnit.assertEquals(59.0, copy.bottom);
+    JsUnit.assertEquals(16.0, copy.right);
+}
+
+function setTest() {
+    let bbox = new BoundingBox.BoundingBox();
+
+    bbox.top = 0;
+    bbox.left = 0;
+    bbox.bottom = -10;
+    bbox.right = 10;
+
+    JsUnit.assertEquals(0.0, bbox.top);
+    JsUnit.assertEquals(0.0, bbox.left);
+    JsUnit.assertEquals(-10.0, bbox.bottom);
+    JsUnit.assertEquals(10.0, bbox.right);
+}
+
+function getCenterTest() {
+    let bbox = new BoundingBox.BoundingBox({ top: 60.0, left: 15.0,
+                                             bottom: 59.0, right: 16.0 });
+    let center = bbox.getCenter();
+
+    JsUnit.assertTrue(center instanceof Array);
+    JsUnit.assertEquals(2, center.length);
+    JsUnit.assertEquals(15.5, center[0]);
+    JsUnit.assertEquals(59.5, center[1]);
+}
+
+function composeTest() {
+    let bbox = new BoundingBox.BoundingBox({ top: 60.0, left: 15.0,
+                                             bottom: 59.0, right: 16.0 });
+    let other = new BoundingBox.BoundingBox({ top: 60.0, left: 14.0,
+                                              bottom: 59.0, right: 15.0 });
+
+    bbox.compose(other);
+
+    JsUnit.assertEquals(60.0, bbox.top);
+    JsUnit.assertEquals(14.0, bbox.left);
+    JsUnit.assertEquals(59.0, bbox.bottom);
+    JsUnit.assertEquals(16.0, bbox.right);
+}
+
+function extendTest() {
+    let bbox = new BoundingBox.BoundingBox({ top: 60.0, left: 15.0,
+                                             bottom: 59.0, right: 16.0 });
+
+    bbox.extend(58.0, 14.0);
+
+    JsUnit.assertEquals(60.0, bbox.top);
+    JsUnit.assertEquals(14.0, bbox.left);
+    JsUnit.assertEquals(58.0, bbox.bottom);
+    JsUnit.assertEquals(16.0, bbox.right);
+}
+
+function isValidTest() {
+    let valid = new BoundingBox.BoundingBox({ top: 60.0, left: 15.0,
+                                              bottom: 59.0, right: 16.0 });
+
+    JsUnit.assertTrue(valid.isValid());
+
+    let unset = new BoundingBox.BoundingBox();
+
+    JsUnit.assertFalse(unset.isValid());
+
+    let overflowNorth = new BoundingBox.BoundingBox({ top: 100.0, left: 15.0,
+                                                      bottom: 0.0, right: 16.0 });
+
+    JsUnit.assertFalse(overflowNorth.isValid());
+
+    let flipped = new BoundingBox.BoundingBox({ top: 59.0, left: 16.0,
+                                                bottom: 60.0, right: 15.0 });
+
+    JsUnit.assertFalse(flipped.isValid());
+}
+
+function coversTest() {
+    let bbox = new BoundingBox.BoundingBox({ top: 60.0, left: 15.0,
+                                             bottom: 59.0, right: 16.0 });
+
+    JsUnit.assertTrue(bbox.covers(59.5, 15.5));
+    JsUnit.assertFalse(bbox.covers(0.0, 0.0));
+    JsUnit.assertFalse(bbox.covers(59.0, -180.0));
+}
diff --git a/tests/meson.build b/tests/meson.build
index d5942bde..2ba07ab0 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1,5 +1,5 @@
-tests = ['addressTest', 'colorTest', 'osmNamesTest', 'timeTest',
-         'translationsTest', 'utilsTest', 'urlsTest']
+tests = ['addressTest', 'boundingBoxTest', 'colorTest', 'osmNamesTest',
+         'timeTest', 'translationsTest', 'utilsTest', 'urlsTest']
 
 foreach test : tests
   script_conf = configuration_data()