Home | History | Annotate | Download | only in base 
      1 // Copyright 2014 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 "media/base/text_ranges.h"
      6 
      7 #include "base/time/time.h"
      8 #include "testing/gtest/include/gtest/gtest.h"
      9 
     10 namespace media {
     11 
     12 class TextRangesTest : public ::testing::Test {
     13  protected:
     14   bool AddCue(int seconds) {
     15     return ranges_.AddCue(base::TimeDelta::FromSeconds(seconds));
     16   }
     17 
     18   void Reset() {
     19     ranges_.Reset();
     20   }
     21 
     22   size_t RangeCount() {
     23     return ranges_.RangeCountForTesting();
     24   }
     25 
     26   TextRanges ranges_;
     27 };
     28 
     29 TEST_F(TextRangesTest, TestEmptyRanges) {
     30   // Create a new active range, with t=5.
     31   EXPECT_TRUE(AddCue(5));
     32 
     33   // Create a new active range, with t=2.
     34   Reset();
     35   EXPECT_TRUE(AddCue(2));
     36 
     37   // Create a new active range, with t=8.
     38   Reset();
     39   EXPECT_TRUE(AddCue(8));
     40 
     41   Reset();
     42 
     43   // Make range [2, 2] active.
     44   EXPECT_FALSE(AddCue(2));
     45   EXPECT_EQ(RangeCount(), 3U);
     46 
     47   // Coalesce first two ranges: [2, 5].
     48   EXPECT_FALSE(AddCue(5));
     49   EXPECT_EQ(RangeCount(), 2U);
     50 
     51   // Coalesce first two ranges: [2, 8].
     52   EXPECT_FALSE(AddCue(8));
     53   EXPECT_EQ(RangeCount(), 1U);
     54 
     55   // Add new cue to end of (only) range.
     56   EXPECT_TRUE(AddCue(9));
     57   EXPECT_EQ(RangeCount(), 1U);
     58 }
     59 
     60 TEST_F(TextRangesTest, TestOneRange) {
     61   // Create a new active range, with t=0.
     62   EXPECT_TRUE(AddCue(0));
     63 
     64   // Add cues to end of existing range.
     65   EXPECT_TRUE(AddCue(1));
     66   EXPECT_TRUE(AddCue(4));
     67 
     68   Reset();
     69   EXPECT_FALSE(AddCue(2));
     70   EXPECT_FALSE(AddCue(3));
     71   EXPECT_FALSE(AddCue(4));
     72 }
     73 
     74 TEST_F(TextRangesTest, TestDuplicateLast) {
     75   // Create a new active range, with t=0.
     76   EXPECT_TRUE(AddCue(0));
     77   EXPECT_TRUE(AddCue(1));
     78 
     79   Reset();
     80   EXPECT_FALSE(AddCue(1));
     81   EXPECT_TRUE(AddCue(1));
     82 }
     83 
     84 TEST_F(TextRangesTest, TestTwoRanges) {
     85   // Create a new active range, with t=0.
     86   EXPECT_TRUE(AddCue(0));
     87 
     88   // Add cue to end of existing range.
     89   EXPECT_TRUE(AddCue(2));
     90 
     91   Reset();
     92 
     93   // Create a new active range, with t=4.
     94   EXPECT_TRUE(AddCue(4));
     95 
     96   // Add a new cue to end of last (active) range.
     97   EXPECT_TRUE(AddCue(5));
     98 
     99   Reset();
    100 
    101   // Make first range active.
    102   EXPECT_FALSE(AddCue(0));
    103   EXPECT_FALSE(AddCue(2));
    104 
    105   // Expand first range.
    106   EXPECT_TRUE(AddCue(3));
    107 
    108   // Coalesce first and second ranges.
    109   EXPECT_FALSE(AddCue(4));
    110   EXPECT_EQ(RangeCount(), 1U);
    111 }
    112 
    113 TEST_F(TextRangesTest, TestThreeRanges) {
    114   // Create a new active range, with t=0.
    115   EXPECT_TRUE(AddCue(0));
    116 
    117   // Add cue to end of existing range.
    118   EXPECT_TRUE(AddCue(2));
    119 
    120   Reset();
    121 
    122   // Create a new active range, with t=4.
    123   EXPECT_TRUE(AddCue(4));
    124 
    125   // Add a new cue to end of last (active) range.
    126   EXPECT_TRUE(AddCue(5));
    127 
    128   Reset();
    129 
    130   // Create a new active range, in between the other two.
    131   EXPECT_TRUE(AddCue(3));
    132 
    133   // Coalesce middle and last ranges.
    134   EXPECT_FALSE(AddCue(4));
    135 
    136   Reset();
    137 
    138   // Make first range active.
    139   EXPECT_FALSE(AddCue(0));
    140   EXPECT_FALSE(AddCue(2));
    141 
    142   // Coalesce first and last ranges.
    143   EXPECT_FALSE(AddCue(3));
    144   EXPECT_EQ(RangeCount(), 1U);
    145 }
    146 
    147 }  // namespace media
    148