gtk2/testsuite/gdk/rectangle.c
Matthias Clasen 43a568395b Add some tests for GdkRectangle
In particular, we're testing corner cases with empty rectangles
here.
2016-03-28 19:54:55 -04:00

83 lines
2.1 KiB
C

#include <gdk/gdk.h>
static void
test_rectangle_equal (void)
{
GdkRectangle a = { 0, 0, 1, 1 };
GdkRectangle b = { 1, 1, 2, 2 };
GdkRectangle c = { 0, 0, 2, 2 };
GdkRectangle d = { 0, 0, 1, 1 };
GdkRectangle e = { 0, 0, 0, 0 };
GdkRectangle f = { 1, 1, 0, 0 };
g_assert_true (!gdk_rectangle_equal (&a, &b));
g_assert_true (!gdk_rectangle_equal (&a, &c));
g_assert_true (!gdk_rectangle_equal (&b, &c));
g_assert_true ( gdk_rectangle_equal (&a, &d));
g_assert_true (!gdk_rectangle_equal (&e, &f));
}
static void
test_rectangle_intersect (void)
{
GdkRectangle a = { 0, 0, 10, 10 };
GdkRectangle b = { 5, 5, 10, 10 };
GdkRectangle c = { 0, 0, 0, 0 };
GdkRectangle d = { 5, 5, 5, 5 };
GdkRectangle e = { 0, 0, 10, 10 };
GdkRectangle f = { 20, 20, 10, 10 };
GdkRectangle g = { 0, 0, 0, 0 };
GdkRectangle h = { 10, 10, 0, 0 };
gboolean res;
res = gdk_rectangle_intersect (&a, &b, &c);
g_assert_true (res);
g_assert_true (gdk_rectangle_equal (&c, &d));
/* non-empty, non-intersecting rectangles */
res = gdk_rectangle_intersect (&e, &f, &f);
g_assert_cmpint (f.width, ==, 0);
g_assert_cmpint (f.height, ==, 0);
/* empty rectangles */
res = gdk_rectangle_intersect (&g, &h, NULL);
g_assert_true (!res);
}
static void
test_rectangle_union (void)
{
GdkRectangle a = { 0, 0, 10, 10 };
GdkRectangle b = { 5, 5, 10, 10 };
GdkRectangle c = { 0, 0, 0, 0 };
GdkRectangle d = { 0, 0, 15, 15 };
GdkRectangle e = { 0, 0, 0, 0 };
GdkRectangle f = { 50, 50, 0, 0 };
GdkRectangle g = { 0, 0, 50, 50 };
gdk_rectangle_union (&a, &b, &c);
g_assert_true (gdk_rectangle_equal (&c, &d));
gdk_rectangle_union (&a, &b, &b);
g_assert_true (gdk_rectangle_equal (&b, &d));
gdk_rectangle_union (&e, &f, &f);
g_assert_true (gdk_rectangle_equal (&f, &g));
}
int
main (int argc, char *argv[])
{
g_test_init (&argc, &argv, NULL);
gdk_init (NULL, NULL);
g_test_bug_base ("http://bugzilla.gnome.org/");
g_test_add_func ("/rectangle/equal", test_rectangle_equal);
g_test_add_func ("/rectangle/intersect", test_rectangle_intersect);
g_test_add_func ("/rectangle/union", test_rectangle_union);
return g_test_run ();
}