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/*
* 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 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 org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
import static org.junit.Assert.*;
@RunWith(RobolectricTestRunner.class)
@SuppressWarnings("rawtypes")
public class CacheDispatcherTest {
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;
@Before public void setUp() throws Exception {
mCacheQueue = new WaitableQueue();
mNetworkQueue = new WaitableQueue();
mCache = new MockCache();
mDelivery = new MockResponseDelivery();
mRequest = new MockRequest();
mDispatcher = new CacheDispatcher(mCacheQueue, mNetworkQueue, mCache, mDelivery);
mDispatcher.start();
}
@After public void tearDown() throws Exception {
mDispatcher.quit();
mDispatcher.join();
}
// A cancelled request should not be processed at all.
@Test public void cancelledRequest() 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.
@Test public void cacheMiss() 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.
@Test public void nonExpiredCacheHit() 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.
@Test public void softExpiredCacheHit() 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.
@Test public void expiredCacheHit() 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());
}
@Test public void duplicateCacheMiss() throws Exception {
MockRequest secondRequest = new MockRequest();
mRequest.setSequence(1);
secondRequest.setSequence(2);
mCacheQueue.add(mRequest);
mCacheQueue.add(secondRequest);
mCacheQueue.waitUntilEmpty(TIMEOUT_MILLIS);
assertTrue(mNetworkQueue.size() == 1);
assertFalse(mDelivery.postResponse_called);
}
@Test public void duplicateSoftExpiredCacheHit_failedRequest() throws Exception {
Cache.Entry entry = CacheTestUtils.makeRandomCacheEntry(null, false, true);
mCache.setEntryToReturn(entry);
MockRequest secondRequest = new MockRequest();
mRequest.setSequence(1);
secondRequest.setSequence(2);
mCacheQueue.add(mRequest);
mCacheQueue.add(secondRequest);
mCacheQueue.waitUntilEmpty(TIMEOUT_MILLIS);
assertTrue(mNetworkQueue.size() == 1);
assertTrue(mDelivery.postResponse_calledNtimes == 2);
Request request = mNetworkQueue.take();
request.notifyListenerResponseNotUsable();
// Second request should now be in network queue.
assertTrue(mNetworkQueue.size() == 1);
request = mNetworkQueue.take();
assertTrue(request.equals(secondRequest));
}
@Test public void duplicateSoftExpiredCacheHit_successfulRequest() throws Exception {
Cache.Entry entry = CacheTestUtils.makeRandomCacheEntry(null, false, true);
mCache.setEntryToReturn(entry);
MockRequest secondRequest = new MockRequest();
mRequest.setSequence(1);
secondRequest.setSequence(2);
mCacheQueue.add(mRequest);
mCacheQueue.add(secondRequest);
mCacheQueue.waitUntilEmpty(TIMEOUT_MILLIS);
assertTrue(mNetworkQueue.size() == 1);
assertTrue(mDelivery.postResponse_calledNtimes == 2);
Request request = mNetworkQueue.take();
request.notifyListenerResponseReceived(Response.success(null, entry));
// Second request should have delivered response.
assertTrue(mNetworkQueue.size() == 0);
assertTrue(mDelivery.postResponse_calledNtimes == 3);
}
}
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