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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.dialer.util;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.SmallTest;
import android.util.LruCache;
import com.android.dialer.util.ExpirableCache.CachedValue;
/**
* Unit tests for {@link ExpirableCache}.
*/
@SmallTest
public class ExpirableCacheTest extends AndroidTestCase {
/** The object under test. */
private ExpirableCache<String, Integer> mCache;
@Override
protected void setUp() throws Exception {
super.setUp();
LruCache<String, CachedValue<Integer>> lruCache =
new LruCache<String, ExpirableCache.CachedValue<Integer>>(20);
mCache = ExpirableCache.create(lruCache);
}
@Override
protected void tearDown() throws Exception {
mCache = null;
super.tearDown();
}
public void testPut() {
mCache.put("a", 1);
mCache.put("b", 2);
assertEquals(1, mCache.getPossiblyExpired("a").intValue());
assertEquals(2, mCache.getPossiblyExpired("b").intValue());
mCache.put("a", 3);
assertEquals(3, mCache.getPossiblyExpired("a").intValue());
}
public void testGet_NotExisting() {
assertNull(mCache.getPossiblyExpired("a"));
mCache.put("b", 1);
assertNull(mCache.getPossiblyExpired("a"));
}
public void testGet_Expired() {
mCache.put("a", 1);
assertEquals(1, mCache.getPossiblyExpired("a").intValue());
mCache.expireAll();
assertEquals(1, mCache.getPossiblyExpired("a").intValue());
}
public void testGetNotExpired_NotExisting() {
assertNull(mCache.get("a"));
mCache.put("b", 1);
assertNull(mCache.get("a"));
}
public void testGetNotExpired_Expired() {
mCache.put("a", 1);
assertEquals(1, mCache.get("a").intValue());
mCache.expireAll();
assertNull(mCache.get("a"));
}
public void testGetCachedValue_NotExisting() {
assertNull(mCache.getCachedValue("a"));
mCache.put("b", 1);
assertNull(mCache.getCachedValue("a"));
}
public void testGetCachedValue_Expired() {
mCache.put("a", 1);
assertFalse("Should not be expired", mCache.getCachedValue("a").isExpired());
mCache.expireAll();
assertTrue("Should be expired", mCache.getCachedValue("a").isExpired());
}
public void testGetChangedValue_PutAfterExpired() {
mCache.put("a", 1);
mCache.expireAll();
mCache.put("a", 1);
assertFalse("Should not be expired", mCache.getCachedValue("a").isExpired());
}
public void testComputingCache() {
// Creates a cache in which all unknown values default to zero.
mCache = ExpirableCache.create(
new LruCache<String, ExpirableCache.CachedValue<Integer>>(10) {
@Override
protected CachedValue<Integer> create(String key) {
return mCache.newCachedValue(0);
}
});
// The first time we request a new value, we add it to the cache.
CachedValue<Integer> cachedValue = mCache.getCachedValue("a");
assertNotNull("Should have been created implicitly", cachedValue);
assertEquals(0, cachedValue.getValue().intValue());
assertFalse("Should not be expired", cachedValue.isExpired());
// If we expire all the values, the implicitly created value will also be marked as expired.
mCache.expireAll();
CachedValue<Integer> expiredCachedValue = mCache.getCachedValue("a");
assertNotNull("Should have been created implicitly", expiredCachedValue);
assertEquals(0, expiredCachedValue.getValue().intValue());
assertTrue("Should be expired", expiredCachedValue.isExpired());
}
}
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