[gtk/matthiasc/color-profile-rebased: 7/51] Add some colorspace tests

[Matthias Clasen <matthiasc src gnome org>]

commit 9b824abddd8210968c119ec9c51644e403e4c833
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Sep 30 14:22:37 2022 -0400

    Add some colorspace tests
    
    This is very minimal, but it is enough to do
    a very basic check of the gdk_color_space_equal
    implementation.

 testsuite/gdk/Rec709.icc   | Bin 0 -> 22464 bytes
 testsuite/gdk/colorspace.c |  97 +++++++++++++++++++++++++++++++++++++++++++++
 testsuite/gdk/meson.build  |   1 +
 3 files changed, 98 insertions(+)
---
diff --git a/testsuite/gdk/Rec709.icc b/testsuite/gdk/Rec709.icc
new file mode 100644
index 0000000000..3f7f3d3758
Binary files /dev/null and b/testsuite/gdk/Rec709.icc differ
diff --git a/testsuite/gdk/colorspace.c b/testsuite/gdk/colorspace.c
new file mode 100644
index 0000000000..0fb4925ef4
--- /dev/null
+++ b/testsuite/gdk/colorspace.c
@@ -0,0 +1,97 @@
+#include <gdk/gdk.h>
+
+static GdkColorSpace *
+get_rec709 (void)
+{
+  const char *file;
+  char *data;
+  gsize size;
+  GError *error = NULL;
+  GBytes *bytes;
+  GdkColorSpace *cs;
+
+  file = g_test_get_filename (G_TEST_DIST, "Rec709.icc", NULL);
+
+  if (!g_file_get_contents (file, &data, &size, &error))
+    {
+      g_error ("%s", error->message);
+      return NULL;
+    }
+
+  bytes = g_bytes_new_take (data, size);
+
+  cs = gdk_color_space_new_from_icc_profile (bytes, &error);
+  if (!cs)
+    g_error ("%s", error->message);
+
+  g_bytes_unref (bytes);
+
+  return cs;
+}
+
+static void
+test_srgb (void)
+{
+  GdkColorSpace *cs;
+  GdkColorSpace *cs2;
+
+  cs = gdk_color_space_get_srgb ();
+
+  g_assert_false (gdk_color_space_is_linear (cs));
+  g_assert_cmpint (gdk_color_space_get_n_components (cs), ==, 3);
+  g_assert_true (gdk_color_space_supports_format (cs, GDK_MEMORY_B8G8R8A8_PREMULTIPLIED));
+  g_assert_true (gdk_color_space_supports_format (cs, GDK_MEMORY_R16G16B16_FLOAT));
+
+  cs2 = get_rec709 ();
+  g_assert_false (gdk_color_space_equal (cs, cs2));
+  g_object_unref (cs2);
+}
+
+static void
+test_icc_roundtrip (GdkColorSpace *cs)
+{
+  GdkColorSpace *cs2;
+  GBytes *icc_data;
+  GError *error = NULL;
+
+
+  icc_data = gdk_color_space_save_to_icc_profile (cs, &error);
+  g_assert_no_error (error);
+
+  cs2 = gdk_color_space_new_from_icc_profile (icc_data, &error);
+  g_assert_no_error (error);
+
+  g_assert_true (gdk_color_space_equal (cs, cs2));
+
+  g_bytes_unref (icc_data);
+
+  g_object_unref (cs2);
+}
+
+static void
+test_icc_roundtrip_srgb (void)
+{
+  test_icc_roundtrip (gdk_color_space_get_srgb ());
+}
+
+static void
+test_icc_roundtrip_rec709 (void)
+{
+  GdkColorSpace *cs;
+
+  cs = get_rec709 ();
+  test_icc_roundtrip (cs);
+  g_object_unref (cs);
+}
+
+int
+main (int argc, char *argv[])
+{
+  (g_test_init) (&argc, &argv, NULL);
+
+  g_test_add_func ("/colorspace/srgb", test_srgb);
+  g_test_add_func ("/colorspace/icc-roundtrip-srgb", test_icc_roundtrip_srgb);
+  g_test_add_func ("/colorspace/icc-roundtrip-rec709", test_icc_roundtrip_rec709);
+
+  return g_test_run ();
+}
diff --git a/testsuite/gdk/meson.build b/testsuite/gdk/meson.build
index 03528a3905..e8bc9c88f9 100644
--- a/testsuite/gdk/meson.build
+++ b/testsuite/gdk/meson.build
@@ -13,6 +13,7 @@ tests = [
   { 'name': 'array' },
   { 'name': 'cairo' },
   { 'name': 'clipboard', 'parallel': false, },
+  { 'name': 'colorspace' },
   { 'name': 'contentformats' },
   { 'name': 'contentserializer' },
   { 'name': 'cursor' },