tests/cogl: Migrate layer remove test

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2555>

cogl/tests/conform/meson.build

@@ -1,6 +1,5 @@
 cogl_test_conformance_sources = [
   'test-conform-main.c',
-  'test-layer-remove.c',
   'test-alpha-test.c',
   'test-map-buffer-range.c',
   'test-npot-texture.c',

cogl/tests/conform/test-conform-main.c

@@ -60,7 +60,6 @@ main (int argc, char **argv)
   UNPORTED_TEST (test_fixed);
   UNPORTED_TEST (test_materials);
   UNPORTED_TEST (test_readpixels);
-  ADD_TEST (test_layer_remove, 0, 0);
 
   ADD_TEST (test_npot_texture, 0, 0);
   UNPORTED_TEST (test_multitexture);

cogl/tests/conform/test-declarations.h

@@ -5,7 +5,6 @@ void test_path (void);
 void test_path_clip (void);
 void test_depth_test (void);
 void test_backface_culling (void);
-void test_layer_remove (void);
 void test_npot_texture (void);
 void test_texture_get_set_data (void);
 void test_alpha_textures (void);

src/tests/cogl/conform/meson.build

@@ -25,6 +25,7 @@ cogl_tests = [
   [ 'test-point-sprite', [] ],
   [ 'test-point-sprite-known-failure', ['gl', 'gl3', 'gles2'] ],
   [ 'test-no-gl-header', [] ],
+  [ 'test-layer-remove', [] ],
 ]
 
 cogl_test_conformance_includes = [

src/tests/cogl/conform/test-layer-remove.c

@@ -1,7 +1,6 @@
 #include <cogl/cogl.h>
 
-#include "test-declarations.h"
-#include "test-utils.h"
+#include "tests/cogl-test-utils.h"
 
 #define TEST_SQUARE_SIZE 10
 
@@ -50,7 +49,7 @@ test_color (CoglPipeline *pipeline,
                           color);
 }
 
-void
+static void
 test_layer_remove (void)
 {
   CoglPipeline *pipeline0, *pipeline1;
@@ -144,3 +143,7 @@ test_layer_remove (void)
   if (cogl_test_verbose ())
     g_print ("OK\n");
 }
+
+COGL_TEST_SUITE (
+  g_test_add_func ("/layer/remove", test_layer_remove);
+)