texture_unittests.cc

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// Copyright 2013 The Flutter 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 "flutter/common/graphics/texture.h"
 
#include <functional>
 
#include "flutter/flow/testing/mock_texture.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
 
namespace flutter {
namespace testing {
 
namespace {
using int_closure = std::function<void(int)>;
 
struct TestContextListener : public ContextListener {
  TestContextListener(uintptr_t p_id,
                      int_closure p_create,
                      int_closure p_destroy)
      : id(p_id), create(std::move(p_create)), destroy(std::move(p_destroy)) {}
 
  virtual ~TestContextListener() = default;
 
  const uintptr_t id;
  int_closure create;
  int_closure destroy;
 
  void OnGrContextCreated() override { create(id); }
 
  void OnGrContextDestroyed() override { destroy(id); }
};
}  // namespace
 
TEST(TextureRegistryTest, UnregisterTextureCallbackTriggered) {
  TextureRegistry registry;
  auto mock_texture1 = std::make_shared<MockTexture>(0);
  auto mock_texture2 = std::make_shared<MockTexture>(1);
 
  registry.RegisterTexture(mock_texture1);
  registry.RegisterTexture(mock_texture2);
  ASSERT_EQ(registry.GetTexture(0), mock_texture1);
  ASSERT_EQ(registry.GetTexture(1), mock_texture2);
  ASSERT_FALSE(mock_texture1->unregistered());
  ASSERT_FALSE(mock_texture2->unregistered());
 
  registry.UnregisterTexture(0);
  ASSERT_EQ(registry.GetTexture(0), nullptr);
  ASSERT_TRUE(mock_texture1->unregistered());
  ASSERT_FALSE(mock_texture2->unregistered());
 
  registry.UnregisterTexture(1);
  ASSERT_EQ(registry.GetTexture(1), nullptr);
  ASSERT_TRUE(mock_texture1->unregistered());
  ASSERT_TRUE(mock_texture2->unregistered());
}
 
TEST(TextureRegistryTest, GrContextCallbackTriggered) {
  TextureRegistry registry;
  auto mock_texture1 = std::make_shared<MockTexture>(0);
  auto mock_texture2 = std::make_shared<MockTexture>(1);
 
  registry.RegisterTexture(mock_texture1);
  registry.RegisterTexture(mock_texture2);
  ASSERT_FALSE(mock_texture1->gr_context_created());
  ASSERT_FALSE(mock_texture2->gr_context_created());
  ASSERT_FALSE(mock_texture1->gr_context_destroyed());
  ASSERT_FALSE(mock_texture2->gr_context_destroyed());
 
  registry.OnGrContextCreated();
  ASSERT_TRUE(mock_texture1->gr_context_created());
  ASSERT_TRUE(mock_texture2->gr_context_created());
 
  registry.UnregisterTexture(0);
  registry.OnGrContextDestroyed();
  ASSERT_FALSE(mock_texture1->gr_context_destroyed());
  ASSERT_TRUE(mock_texture2->gr_context_created());
}
 
TEST(TextureRegistryTest, RegisterTextureTwice) {
  TextureRegistry registry;
  auto mock_texture1 = std::make_shared<MockTexture>(0);
  auto mock_texture2 = std::make_shared<MockTexture>(0);
 
  registry.RegisterTexture(mock_texture1);
  ASSERT_EQ(registry.GetTexture(0), mock_texture1);
  registry.RegisterTexture(mock_texture2);
  ASSERT_EQ(registry.GetTexture(0), mock_texture2);
  ASSERT_FALSE(mock_texture1->unregistered());
  ASSERT_FALSE(mock_texture2->unregistered());
 
  registry.UnregisterTexture(0);
  ASSERT_EQ(registry.GetTexture(0), nullptr);
  ASSERT_FALSE(mock_texture1->unregistered());
  ASSERT_TRUE(mock_texture2->unregistered());
}
 
TEST(TextureRegistryTest, ReuseSameTextureSlot) {
  TextureRegistry registry;
  auto mock_texture1 = std::make_shared<MockTexture>(0);
  auto mock_texture2 = std::make_shared<MockTexture>(0);
 
  registry.RegisterTexture(mock_texture1);
  ASSERT_EQ(registry.GetTexture(0), mock_texture1);
 
  registry.UnregisterTexture(0);
  ASSERT_EQ(registry.GetTexture(0), nullptr);
  ASSERT_TRUE(mock_texture1->unregistered());
  ASSERT_FALSE(mock_texture2->unregistered());
 
  registry.RegisterTexture(mock_texture2);
  ASSERT_EQ(registry.GetTexture(0), mock_texture2);
 
  registry.UnregisterTexture(0);
  ASSERT_EQ(registry.GetTexture(0), nullptr);
  ASSERT_TRUE(mock_texture1->unregistered());
  ASSERT_TRUE(mock_texture2->unregistered());
}
 
TEST(TextureRegistryTest, CallsOnGrContextCreatedInInsertionOrder) {
  TextureRegistry registry;
  std::vector<int> create_order;
  std::vector<int> destroy_order;
  auto create = [&](int id) { create_order.push_back(id); };
  auto destroy = [&](int id) { destroy_order.push_back(id); };
  auto a = std::make_shared<TestContextListener>(5, create, destroy);
  auto b = std::make_shared<TestContextListener>(4, create, destroy);
  auto c = std::make_shared<TestContextListener>(3, create, destroy);
  registry.RegisterContextListener(a->id, a);
  registry.RegisterContextListener(b->id, b);
  registry.RegisterContextListener(c->id, c);
  registry.OnGrContextDestroyed();
  registry.OnGrContextCreated();
 
  EXPECT_THAT(create_order, ::testing::ElementsAre(5, 4, 3));
  EXPECT_THAT(destroy_order, ::testing::ElementsAre(5, 4, 3));
}
 
}  // namespace testing
}  // namespace flutter