Let AreVisibleResourcesReady return correct value for PictureImageLayerImpl

cc/layers/picture_image_layer_impl_unittest.cc

+// Copyright 2013 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/picture_image_layer_impl.h"
+
+#include "cc/test/fake_impl_proxy.h"
+#include "cc/test/fake_layer_tree_host_impl.h"
+#include "cc/test/fake_output_surface.h"
+#include "cc/test/fake_picture_layer_tiling_client.h"
+#include "cc/test/impl_side_painting_settings.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace cc {
+namespace {
+
+class TestablePictureImageLayerImpl : public PictureImageLayerImpl {
+ public:
+  TestablePictureImageLayerImpl(LayerTreeImpl* tree_impl, int id)
+      : PictureImageLayerImpl(tree_impl, id) {
+  }
+  friend class PictureImageLayerImplTest;
+};
+
+class PictureImageLayerImplTest : public testing::Test {
+ public:
+  PictureImageLayerImplTest()
+      : host_impl_(ImplSidePaintingSettings(), &proxy_) {
+    tiling_client_.SetTileSize(ImplSidePaintingSettings().default_tile_size);
+    host_impl_.CreatePendingTree();
+    host_impl_.InitializeRenderer(CreateFakeOutputSurface());
+  }
+
+  scoped_ptr<TestablePictureImageLayerImpl> CreateLayer(int id) {
+    TestablePictureImageLayerImpl* layer =
+        new TestablePictureImageLayerImpl(host_impl_.pending_tree(), id);
+    layer->SetBounds(gfx::Size(100, 200));
+    layer->tilings_.reset(new PictureLayerTilingSet(&tiling_client_));
+    layer->tilings_->SetLayerBounds(layer->bounds());
+    layer->pile_ = tiling_client_.pile();
+    return make_scoped_ptr(layer);
+  }
+
+ private:
+  FakeImplProxy proxy_;
+  FakeLayerTreeHostImpl host_impl_;
+  FakePictureLayerTilingClient tiling_client_;
+};
+
+TEST_F(PictureImageLayerImplTest, CalculateContentsScale) {
+  scoped_ptr<TestablePictureImageLayerImpl> layer(CreateLayer(1));
+  layer->SetDrawsContent(true);
+
+  float contents_scale_x;
+  float contents_scale_y;
+  gfx::Size content_bounds;
+  layer->CalculateContentsScale(2.f, false,
+                                &contents_scale_x, &contents_scale_y,
+                                &content_bounds);
+  EXPECT_FLOAT_EQ(1.f, contents_scale_x);
+  EXPECT_FLOAT_EQ(1.f, contents_scale_y);
+  EXPECT_EQ(layer->bounds(), content_bounds);
+}
+
+TEST_F(PictureImageLayerImplTest, AreVisibleResourcesReady) {
+  scoped_ptr<TestablePictureImageLayerImpl> layer(CreateLayer(1));
+  layer->SetBounds(gfx::Size(100, 200));
+  layer->SetDrawsContent(true);
+
+  float contents_scale_x;
+  float contents_scale_y;
+  gfx::Size content_bounds;
+  layer->CalculateContentsScale(2.f, false,
+                                &contents_scale_x, &contents_scale_y,
+                                &content_bounds);
+
+  EXPECT_TRUE(layer->AreVisibleResourcesReady());
+}
+
+}  // namespace
+}  // namespace cc