Bug 865824 - Add Layers unit test. r=milan

--HG--
extra : rebase_source : 18ac8eac6c2f35365fca6ecb518e78dba5a29544

gfx/tests/gtest/Makefile.in

@@ -24,6 +24,7 @@ LOCAL_INCLUDES = \
   $(NULL)
 
 GTEST_CPPSRCS = \
+  TestLayers.cpp \
   TestTiledLayerBuffer.cpp \
   $(NULL)
 

gfx/tests/gtest/TestLayers.cpp

@@ -0,0 +1,107 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+#include "gtest/gtest.h"
+#include "gmock/gmock.h"
+#include "Layers.h"
+
+using namespace mozilla;
+using namespace mozilla::layers;
+
+class TestLayer: public Layer {
+public:
+  TestLayer(LayerManager* aManager)
+    : Layer(aManager, nullptr)
+  {}
+
+  virtual const char* Name() const {
+    return "TestLayer";
+  }
+
+  virtual LayerType GetType() const {
+    return TYPE_CONTAINER;
+  }
+
+  virtual void ComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface) {
+    MOZ_CRASH();
+  }
+};
+
+class TestUserData: public LayerUserData {
+public:
+  MOCK_METHOD0(Die, void());
+  virtual ~TestUserData() { Die(); }
+};
+
+
+TEST(Layers, LayerConstructor) {
+  TestLayer layer(nullptr);
+}
+
+TEST(Layers, Defaults) {
+  TestLayer layer(nullptr);
+  ASSERT_EQ(1.0, layer.GetOpacity());
+  ASSERT_EQ(1.0f, layer.GetPostXScale());
+  ASSERT_EQ(1.0f, layer.GetPostYScale());
+
+  ASSERT_EQ(nullptr, layer.GetNextSibling());
+  ASSERT_EQ(nullptr, layer.GetPrevSibling());
+  ASSERT_EQ(nullptr, layer.GetFirstChild());
+  ASSERT_EQ(nullptr, layer.GetLastChild());
+}
+
+TEST(Layers, Transform) {
+  TestLayer layer(nullptr);
+
+  gfx3DMatrix identity;
+  ASSERT_EQ(true, identity.IsIdentity());
+
+  ASSERT_EQ(identity, layer.GetTransform());
+}
+
+TEST(Layers, Type) {
+  TestLayer layer(nullptr);
+  ASSERT_EQ(nullptr, layer.AsThebesLayer());
+  ASSERT_EQ(nullptr, layer.AsRefLayer());
+  ASSERT_EQ(nullptr, layer.AsColorLayer());
+}
+
+TEST(Layers, UserData) {
+  TestLayer* layerPtr = new TestLayer(nullptr);
+  TestLayer& layer = *layerPtr;
+
+  void* key1 = (void*)1;
+  void* key2 = (void*)2;
+  void* key3 = (void*)3;
+
+  TestUserData* data1 = new TestUserData;
+  TestUserData* data2 = new TestUserData;
+  TestUserData* data3 = new TestUserData;
+
+  ASSERT_EQ(nullptr, layer.GetUserData(key1));
+  ASSERT_EQ(nullptr, layer.GetUserData(key2));
+  ASSERT_EQ(nullptr, layer.GetUserData(key3));
+
+  layer.SetUserData(key1, data1);
+  layer.SetUserData(key2, data2);
+  layer.SetUserData(key3, data3);
+
+  // Also checking that the user data is returned but not free'd
+  ASSERT_EQ(data1, layer.RemoveUserData(key1).forget());
+  ASSERT_EQ(data2, layer.RemoveUserData(key2).forget());
+  ASSERT_EQ(data3, layer.RemoveUserData(key3).forget());
+
+  layer.SetUserData(key1, data1);
+  layer.SetUserData(key2, data2);
+  layer.SetUserData(key3, data3);
+
+  // Layer has ownership of data1-3, check that they are destroyed
+  EXPECT_CALL(*data1, Die());
+  EXPECT_CALL(*data2, Die());
+  EXPECT_CALL(*data3, Die());
+  delete layerPtr;
+
+}
+