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      1 /*
      2  * libjingle
      3  * Copyright 2004--2010, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "talk/base/gunit.h"
     29 #include "talk/sound/automaticallychosensoundsystem.h"
     30 #include "talk/sound/nullsoundsystem.h"
     31 
     32 namespace cricket {
     33 
     34 class NeverFailsToFailSoundSystem : public NullSoundSystem {
     35  public:
     36   // Overrides superclass.
     37   virtual bool Init() {
     38     return false;
     39   }
     40 
     41   static SoundSystemInterface *Create() {
     42     return new NeverFailsToFailSoundSystem();
     43   }
     44 };
     45 
     46 class InitCheckingSoundSystem1 : public NullSoundSystem {
     47  public:
     48   // Overrides superclass.
     49   virtual bool Init() {
     50     created_ = true;
     51     return true;
     52   }
     53 
     54   static SoundSystemInterface *Create() {
     55     return new InitCheckingSoundSystem1();
     56   }
     57 
     58   static bool created_;
     59 };
     60 
     61 bool InitCheckingSoundSystem1::created_ = false;
     62 
     63 class InitCheckingSoundSystem2 : public NullSoundSystem {
     64  public:
     65   // Overrides superclass.
     66   virtual bool Init() {
     67     created_ = true;
     68     return true;
     69   }
     70 
     71   static SoundSystemInterface *Create() {
     72     return new InitCheckingSoundSystem2();
     73   }
     74 
     75   static bool created_;
     76 };
     77 
     78 bool InitCheckingSoundSystem2::created_ = false;
     79 
     80 class DeletionCheckingSoundSystem1 : public NeverFailsToFailSoundSystem {
     81  public:
     82   virtual ~DeletionCheckingSoundSystem1() {
     83     deleted_ = true;
     84   }
     85 
     86   static SoundSystemInterface *Create() {
     87     return new DeletionCheckingSoundSystem1();
     88   }
     89 
     90   static bool deleted_;
     91 };
     92 
     93 bool DeletionCheckingSoundSystem1::deleted_ = false;
     94 
     95 class DeletionCheckingSoundSystem2 : public NeverFailsToFailSoundSystem {
     96  public:
     97   virtual ~DeletionCheckingSoundSystem2() {
     98     deleted_ = true;
     99   }
    100 
    101   static SoundSystemInterface *Create() {
    102     return new DeletionCheckingSoundSystem2();
    103   }
    104 
    105   static bool deleted_;
    106 };
    107 
    108 bool DeletionCheckingSoundSystem2::deleted_ = false;
    109 
    110 class DeletionCheckingSoundSystem3 : public NullSoundSystem {
    111  public:
    112   virtual ~DeletionCheckingSoundSystem3() {
    113     deleted_ = true;
    114   }
    115 
    116   static SoundSystemInterface *Create() {
    117     return new DeletionCheckingSoundSystem3();
    118   }
    119 
    120   static bool deleted_;
    121 };
    122 
    123 bool DeletionCheckingSoundSystem3::deleted_ = false;
    124 
    125 extern const SoundSystemCreator kSingleSystemFailingCreators[] = {
    126   &NeverFailsToFailSoundSystem::Create,
    127 };
    128 
    129 TEST(AutomaticallyChosenSoundSystem, SingleSystemFailing) {
    130   AutomaticallyChosenSoundSystem<
    131       kSingleSystemFailingCreators,
    132       ARRAY_SIZE(kSingleSystemFailingCreators)> sound_system;
    133   EXPECT_FALSE(sound_system.Init());
    134 }
    135 
    136 extern const SoundSystemCreator kSingleSystemSucceedingCreators[] = {
    137   &NullSoundSystem::Create,
    138 };
    139 
    140 TEST(AutomaticallyChosenSoundSystem, SingleSystemSucceeding) {
    141   AutomaticallyChosenSoundSystem<
    142       kSingleSystemSucceedingCreators,
    143       ARRAY_SIZE(kSingleSystemSucceedingCreators)> sound_system;
    144   EXPECT_TRUE(sound_system.Init());
    145 }
    146 
    147 extern const SoundSystemCreator
    148     kFailedFirstSystemResultsInUsingSecondCreators[] = {
    149   &NeverFailsToFailSoundSystem::Create,
    150   &NullSoundSystem::Create,
    151 };
    152 
    153 TEST(AutomaticallyChosenSoundSystem, FailedFirstSystemResultsInUsingSecond) {
    154   AutomaticallyChosenSoundSystem<
    155       kFailedFirstSystemResultsInUsingSecondCreators,
    156       ARRAY_SIZE(kFailedFirstSystemResultsInUsingSecondCreators)> sound_system;
    157   EXPECT_TRUE(sound_system.Init());
    158 }
    159 
    160 extern const SoundSystemCreator kEarlierEntriesHavePriorityCreators[] = {
    161   &InitCheckingSoundSystem1::Create,
    162   &InitCheckingSoundSystem2::Create,
    163 };
    164 
    165 TEST(AutomaticallyChosenSoundSystem, EarlierEntriesHavePriority) {
    166   AutomaticallyChosenSoundSystem<
    167       kEarlierEntriesHavePriorityCreators,
    168       ARRAY_SIZE(kEarlierEntriesHavePriorityCreators)> sound_system;
    169   InitCheckingSoundSystem1::created_ = false;
    170   InitCheckingSoundSystem2::created_ = false;
    171   EXPECT_TRUE(sound_system.Init());
    172   EXPECT_TRUE(InitCheckingSoundSystem1::created_);
    173   EXPECT_FALSE(InitCheckingSoundSystem2::created_);
    174 }
    175 
    176 extern const SoundSystemCreator kManySoundSystemsCreators[] = {
    177   &NullSoundSystem::Create,
    178   &NullSoundSystem::Create,
    179   &NullSoundSystem::Create,
    180   &NullSoundSystem::Create,
    181   &NullSoundSystem::Create,
    182   &NullSoundSystem::Create,
    183   &NullSoundSystem::Create,
    184 };
    185 
    186 TEST(AutomaticallyChosenSoundSystem, ManySoundSystems) {
    187   AutomaticallyChosenSoundSystem<
    188       kManySoundSystemsCreators,
    189       ARRAY_SIZE(kManySoundSystemsCreators)> sound_system;
    190   EXPECT_TRUE(sound_system.Init());
    191 }
    192 
    193 extern const SoundSystemCreator kDeletesAllCreatedSoundSystemsCreators[] = {
    194   &DeletionCheckingSoundSystem1::Create,
    195   &DeletionCheckingSoundSystem2::Create,
    196   &DeletionCheckingSoundSystem3::Create,
    197 };
    198 
    199 TEST(AutomaticallyChosenSoundSystem, DeletesAllCreatedSoundSystems) {
    200   typedef AutomaticallyChosenSoundSystem<
    201       kDeletesAllCreatedSoundSystemsCreators,
    202       ARRAY_SIZE(kDeletesAllCreatedSoundSystemsCreators)> TestSoundSystem;
    203   TestSoundSystem *sound_system = new TestSoundSystem();
    204   DeletionCheckingSoundSystem1::deleted_ = false;
    205   DeletionCheckingSoundSystem2::deleted_ = false;
    206   DeletionCheckingSoundSystem3::deleted_ = false;
    207   EXPECT_TRUE(sound_system->Init());
    208   delete sound_system;
    209   EXPECT_TRUE(DeletionCheckingSoundSystem1::deleted_);
    210   EXPECT_TRUE(DeletionCheckingSoundSystem2::deleted_);
    211   EXPECT_TRUE(DeletionCheckingSoundSystem3::deleted_);
    212 }
    213 
    214 }  // namespace cricket
    215