text: // Copyright 2014 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/sync/model/attachments/attachment.h"
  
  #include <string>
  
  #include "testing/gtest/include/gtest/gtest.h"
  
  namespace syncer {
  
  class AttachmentIdTest : public testing::Test {};
  
  TEST_F(AttachmentIdTest, Create_IsUnique) {
    AttachmentId id1 = AttachmentId::Create(0, 0);
    AttachmentId id2 = AttachmentId::Create(0, 0);
    EXPECT_NE(id1, id2);
  }
  
  TEST_F(AttachmentIdTest, OperatorEqual) {
    AttachmentId id1 = AttachmentId::Create(0, 0);
    AttachmentId id2(id1);
    EXPECT_EQ(id1, id2);
  }
  
  TEST_F(AttachmentIdTest, OperatorLess) {
    AttachmentId id1 = AttachmentId::Create(0, 0);
    EXPECT_FALSE(id1 < id1);
  
    AttachmentId id2 = AttachmentId::Create(0, 0);
    EXPECT_FALSE(id1 < id1);
  
    EXPECT_NE(id1, id2);
    if (id1 < id2) {
      EXPECT_FALSE(id2 < id1);
    } else {
      EXPECT_TRUE(id2 < id1);
    }
  }
  
  }  // namespace syncer
  