content: /*
   * Copyright (C) 2011 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.android.volley;
  
  import android.test.suitebuilder.annotation.MediumTest;
  
  import com.android.volley.mock.MockCache;
  import com.android.volley.mock.MockRequest;
  import com.android.volley.mock.MockResponseDelivery;
  import com.android.volley.mock.WaitableQueue;
  import com.android.volley.utils.CacheTestUtils;
  
  import junit.framework.TestCase;
  
  @MediumTest
  @SuppressWarnings("rawtypes")
  public class CacheDispatcherTest extends TestCase {
      private CacheDispatcher mDispatcher;
      private WaitableQueue mCacheQueue;
      private WaitableQueue mNetworkQueue;
      private MockCache mCache;
      private MockResponseDelivery mDelivery;
      private MockRequest mRequest;
  
      private static final long TIMEOUT_MILLIS = 5000;
  
      @Override
      protected void setUp() throws Exception {
          super.setUp();
  
          mCacheQueue = new WaitableQueue();
          mNetworkQueue = new WaitableQueue();
          mCache = new MockCache();
          mDelivery = new MockResponseDelivery();
  
          mRequest = new MockRequest();
  
          mDispatcher = new CacheDispatcher(mCacheQueue, mNetworkQueue, mCache, mDelivery);
          mDispatcher.start();
      }
  
      @Override
      protected void tearDown() throws Exception {
          super.tearDown();
          mDispatcher.quit();
          mDispatcher.join();
      }
  
      // A cancelled request should not be processed at all.
      public void testCancelledRequest() throws Exception {
          mRequest.cancel();
          mCacheQueue.add(mRequest);
          mCacheQueue.waitUntilEmpty(TIMEOUT_MILLIS);
          assertFalse(mCache.getCalled);
          assertFalse(mDelivery.wasEitherResponseCalled());
      }
  
      // A cache miss does not post a response and puts the request on the network queue.
      public void testCacheMiss() throws Exception {
          mCacheQueue.add(mRequest);
          mCacheQueue.waitUntilEmpty(TIMEOUT_MILLIS);
          assertFalse(mDelivery.wasEitherResponseCalled());
          assertTrue(mNetworkQueue.size() > 0);
          Request request = mNetworkQueue.take();
          assertNull(request.getCacheEntry());
      }
  
      // A non-expired cache hit posts a response and does not queue to the network.
      public void testNonExpiredCacheHit() throws Exception {
          Cache.Entry entry = CacheTestUtils.makeRandomCacheEntry(null, false, false);
          mCache.setEntryToReturn(entry);
          mCacheQueue.add(mRequest);
          mCacheQueue.waitUntilEmpty(TIMEOUT_MILLIS);
          assertTrue(mDelivery.postResponse_called);
          assertFalse(mDelivery.postError_called);
      }
  
      // A soft-expired cache hit posts a response and queues to the network.
      public void testSoftExpiredCacheHit() throws Exception {
          Cache.Entry entry = CacheTestUtils.makeRandomCacheEntry(null, false, true);
          mCache.setEntryToReturn(entry);
          mCacheQueue.add(mRequest);
          mCacheQueue.waitUntilEmpty(TIMEOUT_MILLIS);
          assertTrue(mDelivery.postResponse_called);
          assertFalse(mDelivery.postError_called);
          assertTrue(mNetworkQueue.size() > 0);
          Request request = mNetworkQueue.take();
          assertSame(entry, request.getCacheEntry());
      }
  
      // An expired cache hit does not post a response and queues to the network.
      public void testExpiredCacheHit() throws Exception {
          Cache.Entry entry = CacheTestUtils.makeRandomCacheEntry(null, true, true);
          mCache.setEntryToReturn(entry);
          mCacheQueue.add(mRequest);
          mCacheQueue.waitUntilEmpty(TIMEOUT_MILLIS);
          assertFalse(mDelivery.wasEitherResponseCalled());
          assertTrue(mNetworkQueue.size() > 0);
          Request request = mNetworkQueue.take();
          assertSame(entry, request.getCacheEntry());
      }
  }
  