src/ui/gfx/sequential_id_generator_unittest.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/gfx/sequential_id_generator.h"
   6
   7 #include "base/logging.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10 namespace ui {
  11
  12 typedef testing::Test SequentialIDGeneratorTest;
  13
  14 TEST(SequentialIDGeneratorTest, AddRemove) {
  15   const uint32 kMinID = 2;
  16   SequentialIDGenerator generator(kMinID);
  17
  18   EXPECT_EQ(2U, generator.GetGeneratedID(45));
  19   EXPECT_EQ(3U, generator.GetGeneratedID(23));
  20   EXPECT_EQ(2U, generator.GetGeneratedID(45));
  21   EXPECT_TRUE(generator.HasGeneratedIDFor(45));
  22   EXPECT_TRUE(generator.HasGeneratedIDFor(23));
  23
  24   generator.ReleaseGeneratedID(2);
  25   EXPECT_FALSE(generator.HasGeneratedIDFor(45));
  26   EXPECT_TRUE(generator.HasGeneratedIDFor(23));
  27   EXPECT_EQ(3U, generator.GetGeneratedID(23));
  28
  29   EXPECT_FALSE(generator.HasGeneratedIDFor(1));
  30   EXPECT_EQ(2U, generator.GetGeneratedID(1));
  31   EXPECT_TRUE(generator.HasGeneratedIDFor(1));
  32
  33   generator.ReleaseGeneratedID(3);
  34   EXPECT_EQ(3U, generator.GetGeneratedID(45));
  35   EXPECT_TRUE(generator.HasGeneratedIDFor(45));
  36
  37   generator.ReleaseNumber(45);
  38   EXPECT_FALSE(generator.HasGeneratedIDFor(45));
  39 }
  40
  41 TEST(SequentialIDGeneratorTest, RemoveMultipleNumbers) {
  42   const uint32 kMinID = 4;
  43   SequentialIDGenerator generator(kMinID);
  44
  45   EXPECT_EQ(4U, generator.GetGeneratedID(45));
  46   EXPECT_EQ(5U, generator.GetGeneratedID(55));
  47   EXPECT_EQ(6U, generator.GetGeneratedID(15));
  48
  49   generator.ReleaseNumber(45);
  50   EXPECT_FALSE(generator.HasGeneratedIDFor(45));
  51   generator.ReleaseNumber(15);
  52   EXPECT_FALSE(generator.HasGeneratedIDFor(15));
  53
  54   EXPECT_EQ(5U, generator.GetGeneratedID(55));
  55   EXPECT_EQ(4U, generator.GetGeneratedID(12));
  56
  57   generator.ReleaseNumber(12);
  58   generator.ReleaseNumber(55);
  59   EXPECT_EQ(4U, generator.GetGeneratedID(0));
  60 }
  61
  62 }  // namespace ui