src/third_party/libjingle/source/talk/base/atomicops_unittest.cc

   1 /*
   2  * libjingle
   3  * Copyright 2011, 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,
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  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 #if !defined(__arm__)
  29 // For testing purposes, define faked versions of the atomic operations
  30 #include "talk/base/basictypes.h"
  31 namespace talk_base {
  32 typedef uint32 Atomic32;
  33 static inline void MemoryBarrier() { }
  34 static inline void AtomicIncrement(volatile Atomic32* ptr) {
  35   *ptr = *ptr + 1;
  36 }
  37 }
  38 #define SKIP_ATOMIC_CHECK
  39 #endif
  40
  41 #include "talk/base/atomicops.h"
  42 #include "talk/base/gunit.h"
  43 #include "talk/base/helpers.h"
  44 #include "talk/base/logging.h"
  45
  46 TEST(FixedSizeLockFreeQueueTest, TestDefaultConstruct) {
  47   talk_base::FixedSizeLockFreeQueue<int> queue;
  48   EXPECT_EQ(0u, queue.capacity());
  49   EXPECT_EQ(0u, queue.Size());
  50   EXPECT_FALSE(queue.PushBack(1));
  51   int val;
  52   EXPECT_FALSE(queue.PopFront(&val));
  53 }
  54
  55 TEST(FixedSizeLockFreeQueueTest, TestConstruct) {
  56   talk_base::FixedSizeLockFreeQueue<int> queue(5);
  57   EXPECT_EQ(5u, queue.capacity());
  58   EXPECT_EQ(0u, queue.Size());
  59   int val;
  60   EXPECT_FALSE(queue.PopFront(&val));
  61 }
  62
  63 TEST(FixedSizeLockFreeQueueTest, TestPushPop) {
  64   talk_base::FixedSizeLockFreeQueue<int> queue(2);
  65   EXPECT_EQ(2u, queue.capacity());
  66   EXPECT_EQ(0u, queue.Size());
  67   EXPECT_TRUE(queue.PushBack(1));
  68   EXPECT_EQ(1u, queue.Size());
  69   EXPECT_TRUE(queue.PushBack(2));
  70   EXPECT_EQ(2u, queue.Size());
  71   EXPECT_FALSE(queue.PushBack(3));
  72   EXPECT_EQ(2u, queue.Size());
  73   int val;
  74   EXPECT_TRUE(queue.PopFront(&val));
  75   EXPECT_EQ(1, val);
  76   EXPECT_EQ(1u, queue.Size());
  77   EXPECT_TRUE(queue.PopFront(&val));
  78   EXPECT_EQ(2, val);
  79   EXPECT_EQ(0u, queue.Size());
  80   EXPECT_FALSE(queue.PopFront(&val));
  81   EXPECT_EQ(0u, queue.Size());
  82 }
  83
  84 TEST(FixedSizeLockFreeQueueTest, TestResize) {
  85   talk_base::FixedSizeLockFreeQueue<int> queue(2);
  86   EXPECT_EQ(2u, queue.capacity());
  87   EXPECT_EQ(0u, queue.Size());
  88   EXPECT_TRUE(queue.PushBack(1));
  89   EXPECT_EQ(1u, queue.Size());
  90
  91   queue.ClearAndResizeUnsafe(5);
  92   EXPECT_EQ(5u, queue.capacity());
  93   EXPECT_EQ(0u, queue.Size());
  94   int val;
  95   EXPECT_FALSE(queue.PopFront(&val));
  96 }