SimpleClassCacheTest.java
/*******************************************************************************
* Copyright (c) 2012 Contributors.
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v 2.0
* which accompanies this distribution and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
*
* Contributors:
* Abraham Nevado (lucierna) initial implementation
********************************************************************************/
package org.aspectj.weaver.tools.cache;
import junit.framework.TestCase;
import java.io.File;
public class SimpleClassCacheTest extends TestCase {
byte[] FAKE_BYTES_V1 = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
byte[] FAKE_BYTES_V2 = { 1, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
byte[] FAKE_WOVEN_BYTES_V1 = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
byte[] FAKE_WOVEN_BYTES_V2 = { 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
private SimpleCache createCache() {
return new SimpleCache(System.getProperty("java.io.tmpdir"), true);
}
public void testCache() {
String classA = "com.generated.A";
SimpleCache cache = createCache();
cache.put(classA, FAKE_BYTES_V1, FAKE_WOVEN_BYTES_V1);
// Returned woven bytes are the original ones
byte[] result = cache.getAndInitialize(classA, FAKE_BYTES_V1, null, null).orElse(null);
assertNotNull(result);
for (int i = 0; i < result.length; i++)
assertEquals(
"Cached version byte[" + i + "] should be equal to the original woven class",
result[i], FAKE_WOVEN_BYTES_V1[i]
);
// Class is properly backed up
File f = new File(System.getProperty("java.io.tmpdir") + File.separator + "com.generated.A-1164760902");
assertTrue(
"Class should be backed up with CRC 1164760902",
f.exists()
);
}
public void testDifferentVersionCache() {
String classA = "com.generated.A";
SimpleCache cache = createCache();
cache.put(classA, FAKE_BYTES_V1, FAKE_WOVEN_BYTES_V1);
cache.put(classA, FAKE_BYTES_V2, FAKE_WOVEN_BYTES_V2);
// Returned woven bytes are the original ones for v1
byte[] result = cache.getAndInitialize(classA, FAKE_BYTES_V1, null, null).orElse(null);
assertNotNull(result);
for (int i = 0; i < result.length; i++)
assertEquals(
"Cached version v1 byte[" + i + "] should be equal to the original woven class",
result[i], FAKE_WOVEN_BYTES_V1[i]
);
// Returned woven bytes are the original ones for v2
result = cache.getAndInitialize(classA, FAKE_BYTES_V2, null, null).orElse(null);
assertNotNull(result);
for (int i = 0; i < result.length; i++)
assertEquals(
"Cached version v2 byte[" + i + "] should be equal to the original woven class",
result[i], FAKE_WOVEN_BYTES_V2[i]
);
}
public void testCacheMiss() {
String classA = "com.generated.A";
SimpleCache cache = createCache();
// Woven bytes not found in cache
assertNull(cache.getAndInitialize(classA, FAKE_BYTES_V1, null, null));
}
public void testCacheHitUnwoven() {
String classA = "com.generated.A";
SimpleCache cache = createCache();
cache.put(classA, FAKE_BYTES_V1, SimpleCache.SAME_BYTES);
// Returned woven bytes are null, indicating an unwoven class
byte[] result = cache.getAndInitialize(classA, FAKE_BYTES_V1, null, null).orElse(null);
assertNull(result);
}
}