File: resource_manager_impl_unittest.cc

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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <stddef.h>

#include "base/memory/raw_ptr.h"
#include "base/test/task_environment.h"
#include "base/trace_event/memory_dump_manager.h"
#include "base/trace_event/process_memory_dump.h"
#include "cc/resources/ui_resource_bitmap.h"
#include "cc/resources/ui_resource_manager.h"
#include "cc/test/stub_layer_tree_host_client.h"
#include "cc/test/test_task_graph_runner.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "ui/android/resources/resource_manager_impl.h"
#include "ui/android/resources/system_ui_resource_type.h"
#include "ui/android/window_android.h"
#include "ui/gfx/android/java_bitmap.h"


using ::testing::_;
using ::testing::AtLeast;
using ::testing::DoAll;
using ::testing::InSequence;
using ::testing::Invoke;
using ::testing::MatcherCast;
using ::testing::Mock;
using ::testing::Pointee;
using ::testing::Return;
using ::testing::SaveArg;
using ::testing::SetArrayArgument;
using ::testing::SetArgPointee;
using ::testing::StrEq;
using ::testing::StrictMock;

namespace ui {

class TestResourceManagerImpl : public ResourceManagerImpl {
 public:
  TestResourceManagerImpl(WindowAndroid* window_android)
      : ResourceManagerImpl(window_android) {}

  ~TestResourceManagerImpl() override {}

  void SetResourceAsLoaded(AndroidResourceType res_type, int res_id) {
    SkBitmap small_bitmap;
    small_bitmap.allocN32Pixels(1, 1, /*is_opaque=*/true);
    SkCanvas canvas(small_bitmap);
    canvas.drawColor(SK_ColorWHITE);
    small_bitmap.setImmutable();

    OnResourceReady(nullptr, nullptr, res_type, res_id,
                    gfx::ConvertToJavaBitmap(small_bitmap), 1, 1,
                    reinterpret_cast<intptr_t>(new Resource()));
  }

 protected:
  void PreloadResourceFromJava(AndroidResourceType res_type,
                               int res_id) override {}

  void RequestResourceFromJava(AndroidResourceType res_type,
                               int res_id) override {
    SetResourceAsLoaded(res_type, res_id);
  }
};

namespace {

const ui::SystemUIResourceType kTestResourceType = ui::OVERSCROLL_GLOW;

class MockUIResourceManager : public cc::UIResourceManager {
 public:
  MockUIResourceManager() {}

  MockUIResourceManager(const MockUIResourceManager&) = delete;
  MockUIResourceManager& operator=(const MockUIResourceManager&) = delete;

  MOCK_METHOD1(CreateUIResource, cc::UIResourceId(cc::UIResourceClient*));
  MOCK_METHOD1(DeleteUIResource, void(cc::UIResourceId));
};

}  // namespace

class ResourceManagerTest : public testing::Test {
 public:
  ResourceManagerTest()
      : window_android_(WindowAndroid::CreateForTesting()),
        resource_manager_(window_android_->get()) {
    resource_manager_.Init(&ui_resource_manager_);
  }

  void PreloadResource(ui::SystemUIResourceType type) {
    resource_manager_.PreloadResource(ui::ANDROID_RESOURCE_TYPE_SYSTEM, type);
  }

  cc::UIResourceId GetUIResourceId(ui::SystemUIResourceType type) {
    return resource_manager_.GetUIResourceId(ui::ANDROID_RESOURCE_TYPE_SYSTEM,
                                             type);
  }

  void SetResourceAsLoaded(ui::SystemUIResourceType type) {
    resource_manager_.SetResourceAsLoaded(ui::ANDROID_RESOURCE_TYPE_SYSTEM,
                                          type);
  }

 private:
  base::test::SingleThreadTaskEnvironment task_environment_;
  std::unique_ptr<WindowAndroid::ScopedWindowAndroidForTesting> window_android_;

 protected:
  MockUIResourceManager ui_resource_manager_;
  TestResourceManagerImpl resource_manager_;
  cc::StubLayerTreeHostClient stub_client_;
};

TEST_F(ResourceManagerTest, GetResource) {
  const cc::UIResourceId kResourceId = 99;
  EXPECT_CALL(ui_resource_manager_, CreateUIResource(_))
      .WillOnce(Return(kResourceId))
      .RetiresOnSaturation();
  EXPECT_EQ(kResourceId, GetUIResourceId(kTestResourceType));
}

TEST_F(ResourceManagerTest, PreloadEnsureResource) {
  const cc::UIResourceId kResourceId = 99;
  PreloadResource(kTestResourceType);
  EXPECT_CALL(ui_resource_manager_, CreateUIResource(_))
      .WillOnce(Return(kResourceId))
      .RetiresOnSaturation();
  SetResourceAsLoaded(kTestResourceType);
  EXPECT_EQ(kResourceId, GetUIResourceId(kTestResourceType));
}

TEST_F(ResourceManagerTest, TestOnMemoryDumpEmitsData) {
  SetResourceAsLoaded(kTestResourceType);

  base::trace_event::MemoryDumpArgs dump_args = {
      base::trace_event::MemoryDumpLevelOfDetail::kDetailed};
  std::unique_ptr<base::trace_event::ProcessMemoryDump> process_memory_dump =
      std::make_unique<base::trace_event::ProcessMemoryDump>(dump_args);
  resource_manager_.OnMemoryDump(dump_args, process_memory_dump.get());
  const auto& allocator_dumps = process_memory_dump->allocator_dumps();
  const char* system_allocator_pool_name =
      base::trace_event::MemoryDumpManager::GetInstance()
          ->system_allocator_pool_name();
  size_t kExpectedDumpCount = 10;
  EXPECT_EQ(kExpectedDumpCount, allocator_dumps.size());
  for (const auto& dump : allocator_dumps) {
    ASSERT_TRUE(dump.first.find("ui/resource_manager") == 0 ||
                dump.first.find(system_allocator_pool_name) == 0);
  }
}

}  // namespace ui