components/performance_manager/render_process_host_id_unittest.cc

// Copyright 2019 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 "components/performance_manager/public/render_process_host_id.h"

#include "content/public/common/child_process_host.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace performance_manager {

TEST(RenderProcessHostIdTest, InvalidValues) {
  RenderProcessHostId default_id;
  EXPECT_TRUE(default_id.is_null());
  EXPECT_FALSE(default_id);

  RenderProcessHostId invalid_id(content::ChildProcessHost::kInvalidUniqueID);
  EXPECT_TRUE(invalid_id.is_null());
  EXPECT_FALSE(invalid_id);

  RenderProcessHostId zero_id(0);
  EXPECT_TRUE(zero_id.is_null());
  EXPECT_FALSE(zero_id);

  EXPECT_EQ(default_id, invalid_id);
  EXPECT_NE(default_id, zero_id);

  RenderProcessHostId valid_id(1);
  EXPECT_FALSE(valid_id.is_null());
  EXPECT_TRUE(valid_id);
}

TEST(RenderProcessHostIdTest, Generator) {
  RenderProcessHostId::Generator generator;
  EXPECT_EQ(generator.GenerateNextId(), RenderProcessHostId(1));
  EXPECT_EQ(generator.GenerateNextId(), RenderProcessHostId(2));
}

}  // namespace performance_manager