1 files changed, 78 insertions, 0 deletions
diff --git a/cc/layers/io_surface_layer_impl_unittest.cc b/cc/layers/io_surface_layer_impl_unittest.cc
new file mode 100644
index 0000000..30c84ba
--- /dev/null
+++ b/cc/layers/io_surface_layer_impl_unittest.cc
@@ -0,0 +1,78 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "cc/layers/io_surface_layer_impl.h"
+
+#include "cc/layers/append_quads_data.h"
+#include "cc/test/fake_layer_tree_host.h"
+#include "cc/test/layer_test_common.h"
+#include "cc/test/mock_quad_culler.h"
+#include "cc/trees/layer_tree_host_common.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace cc {
+namespace {
+
+TEST(IOSurfaceLayerImplTest, Occlusion) {
+  gfx::Size layer_size(1000, 1000);
+  gfx::Size viewport_size(1000, 1000);
+
+  LayerTestCommon::LayerImplTest impl;
+  MockQuadCuller quad_culler;
+  AppendQuadsData data;
+
+  IOSurfaceLayerImpl* io_surface_layer_impl =
+      impl.AddChildToRoot<IOSurfaceLayerImpl>();
+  io_surface_layer_impl->SetAnchorPoint(gfx::PointF());
+  io_surface_layer_impl->SetBounds(layer_size);
+  io_surface_layer_impl->SetContentBounds(layer_size);
+  io_surface_layer_impl->SetDrawsContent(true);
+
+  impl.CalcDrawProps(viewport_size);
+
+  // No occlusion.
+  {
+    gfx::Rect occluded;
+    quad_culler.clear_lists();
+    quad_culler.set_occluded_content_rect(occluded);
+    io_surface_layer_impl->AppendQuads(&quad_culler, &data);
+
+    LayerTestCommon::VerifyQuadsExactlyCoverRect(quad_culler.quad_list(),
+                                                 gfx::Rect(viewport_size));
+    EXPECT_EQ(1u, quad_culler.quad_list().size());
+  }
+
+  // Full occlusion.
+  {
+    gfx::Rect occluded = io_surface_layer_impl->visible_content_rect();
+    quad_culler.clear_lists();
+    quad_culler.set_occluded_content_rect(occluded);
+    io_surface_layer_impl->AppendQuads(&quad_culler, &data);
+
+    LayerTestCommon::VerifyQuadsExactlyCoverRect(quad_culler.quad_list(),
+                                                 gfx::Rect());
+    EXPECT_EQ(quad_culler.quad_list().size(), 0u);
+  }
+
+  // Partial occlusion.
+  {
+    gfx::Rect occluded(200, 0, 800, 1000);
+    quad_culler.clear_lists();
+    quad_culler.set_occluded_content_rect(occluded);
+    io_surface_layer_impl->AppendQuads(&quad_culler, &data);
+
+    size_t partially_occluded_count = 0;
+    LayerTestCommon::VerifyQuadsCoverRectWithOcclusion(
+        quad_culler.quad_list(),
+        gfx::Rect(viewport_size),
+        occluded,
+        &partially_occluded_count);
+    // The layer outputs one quad, which is partially occluded.
+    EXPECT_EQ(1u, quad_culler.quad_list().size());
+    EXPECT_EQ(1u, partially_occluded_count);
+  }
+}
+
+}  // namespace
+}  // namespace cc