[tests] Add initial sizing conformance test suite

The size requisition and allocation mechanisms should be thoroughly
tested to avoid unwanted regressions.

For starters, we can test the explicit size setting and the side
effects of calling clutter_actor_set_size().

tests/conform/Makefile.am

@@ -32,6 +32,7 @@ test_conformance_SOURCES = 		\
 	test-premult.c			\
 	test-materials.c		\
 	test-group.c			\
+	test-actor-size.c		\
         $(NULL)
 
 # For convenience, this provides a way to easily run individual unit tests:

tests/conform/test-actor-size.c

@@ -0,0 +1,77 @@
+#include <stdlib.h>
+#include <string.h>
+
+#include <clutter/clutter.h>
+
+#include "test-conform-common.h"
+
+void
+test_fixed_size (TestConformSimpleFixture *fixture,
+                 gconstpointer data)
+{
+  ClutterActor *rect;
+  gboolean min_width_set, nat_width_set;
+  gboolean min_height_set, nat_height_set;
+  gfloat min_width, min_height;
+  gfloat nat_width, nat_height;
+
+  rect = clutter_rectangle_new ();
+
+  if (g_test_verbose ())
+    g_print ("Initial size is 0\n");
+
+  g_assert_cmpfloat (clutter_actor_get_width (rect), ==, 0);
+  g_assert_cmpfloat (clutter_actor_get_height (rect), ==, 0);
+
+  clutter_actor_set_size (rect, 100, 100);
+
+  if (g_test_verbose ())
+    g_print ("Explicit size set\n");
+
+  g_assert_cmpfloat (clutter_actor_get_width (rect), ==, 100);
+  g_assert_cmpfloat (clutter_actor_get_height (rect), ==, 100);
+
+  g_object_get (G_OBJECT (rect),
+                "min-width-set", &min_width_set,
+                "min-height-set", &min_height_set,
+                "natural-width-set", &nat_width_set,
+                "natural-height-set", &nat_height_set,
+                NULL);
+
+  if (g_test_verbose ())
+    g_print ("Notification properties\n");
+
+  g_assert (min_width_set && nat_width_set);
+  g_assert (min_height_set && nat_height_set);
+
+  clutter_actor_get_preferred_size (rect,
+                                    &min_width, &min_height,
+                                    &nat_width, &nat_height);
+
+  if (g_test_verbose ())
+    g_print ("Preferred size\n");
+
+  g_assert_cmpfloat (min_width, ==, 100);
+  g_assert_cmpfloat (min_height, ==, 100);
+  g_assert_cmpfloat (min_width, ==, nat_width);
+  g_assert_cmpfloat (min_height, ==, nat_height);
+
+  clutter_actor_set_size (rect, -1, -1);
+
+  if (g_test_verbose ())
+    g_print ("Explicit size unset\n");
+
+  g_object_get (G_OBJECT (rect),
+                "min-width-set", &min_width_set,
+                "min-height-set", &min_height_set,
+                "natural-width-set", &nat_width_set,
+                "natural-height-set", &nat_height_set,
+                NULL);
+  g_assert (!min_width_set && !nat_width_set);
+  g_assert (!min_height_set && !nat_height_set);
+
+  g_assert_cmpfloat (clutter_actor_get_width (rect), ==, 0);
+  g_assert_cmpfloat (clutter_actor_get_height (rect), ==, 0);
+
+  clutter_actor_destroy (rect);
+}

tests/conform/test-conform-main.c

@@ -170,5 +170,7 @@ main (int argc, char **argv)
 
   TEST_CONFORM_SIMPLE ("/group", test_group_depth_sorting);
 
+  TEST_CONFORM_SIMPLE ("/sizing", test_fixed_size);
+
   return g_test_run ();
 }