dl_storage_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/display_list/dl_storage.h"
 
#include "flutter/testing/testing.h"
 
namespace flutter {
namespace testing {
 
TEST(DisplayListStorage, DefaultConstructed) {
  DisplayListStorage storage;
  EXPECT_EQ(storage.base(), nullptr);
  EXPECT_EQ(storage.size(), 0u);
  EXPECT_EQ(storage.capacity(), 0u);
}
 
TEST(DisplayListStorage, Allocation) {
  DisplayListStorage storage;
  EXPECT_NE(storage.allocate(10u), nullptr);
  EXPECT_NE(storage.base(), nullptr);
  EXPECT_EQ(storage.size(), 10u);
  EXPECT_EQ(storage.capacity(), DisplayListStorage::kDLPageSize);
}
 
TEST(DisplayListStorage, PostMove) {
  DisplayListStorage original;
  EXPECT_NE(original.allocate(10u), nullptr);
 
  DisplayListStorage moved = std::move(original);
 
  // NOLINTBEGIN(bugprone-use-after-move)
  // NOLINTBEGIN(clang-analyzer-cplusplus.Move)
  EXPECT_EQ(original.base(), nullptr);
  EXPECT_EQ(original.size(), 0u);
  EXPECT_EQ(original.capacity(), 0u);
  // NOLINTEND(clang-analyzer-cplusplus.Move)
  // NOLINTEND(bugprone-use-after-move)
 
  EXPECT_NE(moved.base(), nullptr);
  EXPECT_EQ(moved.size(), 10u);
  EXPECT_EQ(moved.capacity(), DisplayListStorage::kDLPageSize);
}
 
TEST(DisplayListStorage, NextPowerOfTwoSize) {
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(0), 1u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(1), 1u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(2), 2u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(3), 4u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(4), 4u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(5), 8u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(7), 8u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(15), 16u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(31), 32u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(63), 64u);
 
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(127), 128u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(255), 256u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(511), 512u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(1023), 1024u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(2047), 2048u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(4095), 4096u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(8191), 8192u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(16383), 16384u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(32767), 32768u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(65535), 65536u);
  EXPECT_EQ(DisplayListStorage::NextPowerOfTwoSize(131071), 131072u);
  // It probably works...
}
 
}  // namespace testing
}  // namespace flutter