sequential_id_generator_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/shell/platform/windows/sequential_id_generator.h"
 
#include "gtest/gtest.h"
 
namespace flutter {
namespace testing {
 
TEST(SequentialIdGeneratorTest, RemoveMultipleNumbers) {
  const uint32_t kMinId = 4;
  const uint32_t kMaxId = 128;
 
  SequentialIdGenerator generator(kMinId, kMaxId);
 
  EXPECT_EQ(4U, generator.GetGeneratedId(45));
  EXPECT_EQ(5U, generator.GetGeneratedId(55));
  EXPECT_EQ(6U, generator.GetGeneratedId(15));
 
  generator.ReleaseNumber(45);
  EXPECT_FALSE(generator.HasGeneratedIdFor(45));
  generator.ReleaseNumber(15);
  EXPECT_FALSE(generator.HasGeneratedIdFor(15));
 
  EXPECT_EQ(5U, generator.GetGeneratedId(55));
  EXPECT_EQ(4U, generator.GetGeneratedId(12));
 
  generator.ReleaseNumber(12);
  generator.ReleaseNumber(55);
  EXPECT_EQ(4U, generator.GetGeneratedId(0));
}
 
TEST(SequentialIdGeneratorTest, MaybeRemoveNumbers) {
  const uint32_t kMinId = 0;
  const uint32_t kMaxId = 128;
 
  SequentialIdGenerator generator(kMinId, kMaxId);
 
  EXPECT_EQ(0U, generator.GetGeneratedId(42));
 
  generator.ReleaseNumber(42);
  EXPECT_FALSE(generator.HasGeneratedIdFor(42));
  generator.ReleaseNumber(42);
}
 
}  // namespace testing
}  // namespace flutter