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Add a test for the system rgba visual

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The main point of this test is to ensure that the pixel_details
getters work as expected.
This commit is contained in:
Matthias Clasen 2016-03-26 10:09:19 -04:00
parent e48e29db3b
commit 2374e2aa3b
2 changed files with 66 additions and 0 deletions
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1
testsuite/gdk/Makefile.am
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@ -23,6 +23,7 @@ TEST_PROGS += \
encoding \
keysyms \
rgba \
visual \
$(NULL)
CLEANFILES = \

65
testsuite/gdk/visual.c Normal file
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@ -0,0 +1,65 @@
#include <gdk/gdk.h>
/* We don't technically guarantee that the visual returned by
* gdk_screen_get_rgba_visual is ARGB8888. But if it isn't, lots
* of code will break, so test this here anyway.
* The main point of this test is to ensure that the pixel_details
* functions return meaningful values for TrueColor visuals.
*/
static void
test_rgba_visual (void)
{
GdkScreen *screen;
GdkVisual *visual;
guint32 r_mask, g_mask, b_mask;
gint r_shift, g_shift, b_shift;
gint r_precision, g_precision, b_precision;
gint depth;
GdkVisualType type;
g_test_bug ("764210");
screen = gdk_screen_get_default ();
visual = gdk_screen_get_rgba_visual (screen);
if (visual == NULL)
{
g_test_skip ("no rgba visual");
return;
}
depth = gdk_visual_get_depth (visual);
type = gdk_visual_get_visual_type (visual);
gdk_visual_get_red_pixel_details (visual, &r_mask, &r_shift, &r_precision);
gdk_visual_get_green_pixel_details (visual, &g_mask, &g_shift, &g_precision);
gdk_visual_get_blue_pixel_details (visual, &b_mask, &b_shift, &b_precision);
g_assert_cmpint (depth, ==, 32);
g_assert_cmpint (type, ==, GDK_VISUAL_TRUE_COLOR);
g_assert_cmphex (r_mask, ==, 0x00ff0000);
g_assert_cmphex (g_mask, ==, 0x0000ff00);
g_assert_cmphex (b_mask, ==, 0x000000ff);
g_assert_cmpint (r_shift, ==, 16);
g_assert_cmpint (g_shift, ==, 8);
g_assert_cmpint (b_shift, ==, 0);
g_assert_cmpint (r_precision, ==, 8);
g_assert_cmpint (g_precision, ==, 8);
g_assert_cmpint (b_precision, ==, 8);
}
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 ("/visual/rgba", test_rgba_visual);
return g_test_run ();
}