/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.impl.client.cache.memcached;
import static org.junit.Assert.*;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import org.apache.http.client.cache.HttpCacheEntry;
import org.apache.http.impl.client.cache.DefaultHttpCacheEntrySerializer;
import org.apache.http.impl.client.cache.HttpTestUtils;
import org.junit.Before;
import org.junit.Test;
public class TestMemcachedCacheEntryImpl {
private MemcachedCacheEntryImpl impl;
private HttpCacheEntry entry;
@Before
public void setUp() {
entry = HttpTestUtils.makeCacheEntry();
impl = new MemcachedCacheEntryImpl("foo", entry);
}
@Test
public void canBeCreatedEmpty() {
impl = new MemcachedCacheEntryImpl();
assertNull(impl.getStorageKey());
assertNull(impl.getHttpCacheEntry());
}
@Test
public void canBeSerialized() {
byte[] bytes = impl.toByteArray();
assertNotNull(bytes);
assertTrue(bytes.length > 0);
}
@Test
public void knowsItsCacheKey() {
assertEquals("foo", impl.getStorageKey());
}
@Test
public void knowsItsCacheEntry() {
assertEquals(entry, impl.getHttpCacheEntry());
}
@Test
public void canBeReconstitutedFromByteArray() throws Exception {
String key = impl.getStorageKey();
HttpCacheEntry entry = impl.getHttpCacheEntry();
byte[] bytes = impl.toByteArray();
impl = new MemcachedCacheEntryImpl();
impl.set(bytes);
assertEquals(key, impl.getStorageKey());
assertEquivalent(entry, impl.getHttpCacheEntry());
}
@Test(expected=MemcachedSerializationException.class)
public void cannotReconstituteFromGarbage() {
impl = new MemcachedCacheEntryImpl();
byte[] bytes = HttpTestUtils.getRandomBytes(128);
impl.set(bytes);
}
private void assertEquivalent(HttpCacheEntry entry,
HttpCacheEntry resultEntry) throws IOException {
/* Ugh. Implementing HttpCacheEntry#equals is problematic
* due to the Resource response body (may cause unexpected
* I/O to users). Checking that two entries
* serialize to the same bytes seems simpler, on the whole,
* (while still making for a somewhat yucky test). At
* least we encapsulate it off here in its own method so
* the test that uses it remains clear.
*/
DefaultHttpCacheEntrySerializer ser = new DefaultHttpCacheEntrySerializer();
ByteArrayOutputStream bos1 = new ByteArrayOutputStream();
ser.writeTo(entry, bos1);
byte[] bytes1 = bos1.toByteArray();
ByteArrayOutputStream bos2 = new ByteArrayOutputStream();
ser.writeTo(resultEntry, bos2);
byte[] bytes2 = bos2.toByteArray();
assertEquals(bytes1.length, bytes2.length);
for(int i = 0; i < bytes1.length; i++) {
assertEquals(bytes1[i], bytes2[i]);
}
}
}