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      1 /*
      2  * Copyright (C) 2013 Google Inc. All Rights Reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  *
     25  */
     26 
     27 #include "config.h"
     28 
     29 #include "platform/LifecycleContext.h"
     30 
     31 #include "platform/LifecycleNotifier.h"
     32 #include <gtest/gtest.h>
     33 
     34 using namespace WebCore;
     35 
     36 namespace {
     37 class DummyContext : public LifecycleContext<DummyContext> {
     38 };
     39 }
     40 
     41 namespace WebCore {
     42 
     43 template<> void observerContext(DummyContext* context, LifecycleObserver<DummyContext>* observer)
     44 {
     45     context->wasObservedBy(observer);
     46 }
     47 
     48 template<> void unobserverContext(DummyContext* context, LifecycleObserver<DummyContext>* observer)
     49 {
     50     context->wasUnobservedBy(observer);
     51 }
     52 
     53 }
     54 
     55 namespace {
     56 
     57 
     58 class TestingObserver : public LifecycleObserver<DummyContext> {
     59 public:
     60     TestingObserver(DummyContext* context)
     61         : LifecycleObserver<DummyContext>(context)
     62         , m_contextDestroyedCalled(false)
     63     { }
     64 
     65     virtual void contextDestroyed() OVERRIDE
     66     {
     67         LifecycleObserver<DummyContext>::contextDestroyed();
     68         m_contextDestroyedCalled = true;
     69     }
     70 
     71     bool m_contextDestroyedCalled;
     72 
     73     void unobserve() { observeContext(0); }
     74 };
     75 
     76 TEST(LifecycleContextTest, shouldObserveContextDestroyed)
     77 {
     78     OwnPtr<DummyContext> context = adoptPtr(new DummyContext());
     79     OwnPtr<TestingObserver> observer = adoptPtr(new TestingObserver(context.get()));
     80 
     81     EXPECT_EQ(observer->lifecycleContext(), context.get());
     82     EXPECT_FALSE(observer->m_contextDestroyedCalled);
     83 
     84     context.clear();
     85     EXPECT_EQ(observer->lifecycleContext(), static_cast<DummyContext*>(0));
     86     EXPECT_TRUE(observer->m_contextDestroyedCalled);
     87 }
     88 
     89 TEST(LifecycleContextTest, shouldNotObserveContextDestroyedIfUnobserve)
     90 {
     91     OwnPtr<DummyContext> context = adoptPtr(new DummyContext());
     92     OwnPtr<TestingObserver> observer = adoptPtr(new TestingObserver(context.get()));
     93 
     94     observer->unobserve();
     95     context.clear();
     96     EXPECT_EQ(observer->lifecycleContext(), static_cast<DummyContext*>(0));
     97     EXPECT_FALSE(observer->m_contextDestroyedCalled);
     98 }
     99 
    100 
    101 }
    102