[test/rel-path] Check that invalid relative paths raise an error.

Check that NO_CURRENT_PATH is raised if a relative path op is used
on a new path.

1 files changed, 66 insertions, 0 deletions

diff --git a/test/rel-path.c b/test/rel-path.c
index 1da3557a2..0f42321b9 100644
--- a/test/rel-path.c
+++ b/test/rel-path.c
@@ -33,9 +33,75 @@ cairo_test_t test = {
     draw
 };
 
+static cairo_status_t
+invalid_rel_move_to (cairo_surface_t *target)
+{
+    cairo_t *cr;
+    cairo_status_t status;
+
+    cr = cairo_create (target);
+    cairo_rel_move_to (cr, SIZE, SIZE/2);
+    status = cairo_status (cr);
+    cairo_destroy (cr);
+
+    return status;
+}
+
+static cairo_status_t
+invalid_rel_line_to (cairo_surface_t *target)
+{
+    cairo_t *cr;
+    cairo_status_t status;
+
+    cr = cairo_create (target);
+    cairo_rel_line_to (cr, -SIZE, SIZE/2);
+    status = cairo_status (cr);
+    cairo_destroy (cr);
+
+    return status;
+}
+
+static cairo_status_t
+invalid_rel_curve_to (cairo_surface_t *target)
+{
+    cairo_t *cr;
+    cairo_status_t status;
+
+    cr = cairo_create (target);
+    cairo_rel_curve_to (cr,
+			SIZE/2, -SIZE/2,
+			SIZE*2/3, -SIZE/3,
+			SIZE/2, -SIZE);
+    status = cairo_status (cr);
+    cairo_destroy (cr);
+
+    return status;
+}
+
 static cairo_test_status_t
 draw (cairo_t *cr, int width, int height)
 {
+    cairo_status_t status;
+
+    /* first test that a relative move without a current point fails... */
+    status = invalid_rel_move_to (cairo_get_target (cr));
+    if (status != CAIRO_STATUS_NO_CURRENT_POINT) {
+	cairo_test_log ("Error: invalid cairo_rel_move_to() did not raise NO_CURRENT_POINT\n");
+	return CAIRO_TEST_FAILURE;
+    }
+
+    status = invalid_rel_line_to (cairo_get_target (cr));
+    if (status != CAIRO_STATUS_NO_CURRENT_POINT) {
+	cairo_test_log ("Error: invalid cairo_rel_line_to() did not raise NO_CURRENT_POINT\n");
+	return CAIRO_TEST_FAILURE;
+    }
+
+    status = invalid_rel_curve_to (cairo_get_target (cr));
+    if (status != CAIRO_STATUS_NO_CURRENT_POINT) {
+	cairo_test_log ("Error: invalid cairo_rel_curve_to() did not raise NO_CURRENT_POINT\n");
+	return CAIRO_TEST_FAILURE;
+    }
+
     cairo_set_source_rgb (cr, 1, 1, 1);
     cairo_move_to (cr, 0, 0);
     cairo_rel_move_to (cr, SIZE, SIZE/2);