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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.cache;
import junit.framework.TestCase;
import java.util.ArrayList;
import java.util.Collection;
public class CacheTestCase extends TestCase {
public void testBasicGet() {
Cache<String, String> cache = new Cache<>(100 * 1024 * 1024, 3600, 10000);
String q = "/std_xmls_a00?hits=5&offset=5&query=flowers+shop&tracelevel=4&objid=ffffffffffffffff";
String q2 = "/std_xmls_a00?hits=5&offset=5&query=flowers+shop&tracelevel=4&objid=ffffffffffffffff";
String r = "result";
String r2 = "result2";
assertNull(cache.get(q));
cache.put(q, r);
assertNotNull(cache.get(q));
assertEquals(cache.get(q), r);
cache.put(q2, r);
assertEquals(cache.get(q2), r);
cache.put(q, r2);
assertEquals(cache.get(q), r2);
}
public void testPutTooLarge() {
byte[] tenMB = new byte[10*1024*1024];
for (int i = 0 ; i <10*1024*1024 ; i++) {
tenMB[i]=127;
}
byte[] sevenMB = new byte[7*1024*1024];
for (int i = 0 ; i <7*1024*1024 ; i++) {
sevenMB[i]=127;
}
Cache<String, byte[]> cache=new Cache<>(9*1024*1024,3600, 100*1024*1024); // 9 MB
assertFalse(cache.put("foo", tenMB));
assertTrue(cache.put("foo", sevenMB));
assertEquals(cache.get("foo"), sevenMB);
}
public void testInvalidate() {
byte[] tenMB = new byte[10*1024*1024];
for (int i = 0 ; i <10*1024*1024 ; i++) {
tenMB[i]=127;
}
byte[] sevenMB = new byte[7*1024*1024];
for (int i = 0 ; i <7*1024*1024 ; i++) {
sevenMB[i]=127;
}
//log.info("10 MB: "+calc.sizeOf(tenMB));
//log.info("7 MB: "+calc.sizeOf(sevenMB));
Cache<String, byte[]> cache=new Cache<>(11*1024*1024,3600, 100*1024*1024); // 11 MB
assertTrue(cache.put("foo", sevenMB));
assertTrue(cache.put("bar", tenMB));
assertNull(cache.get("foo"));
assertEquals(cache.get("bar"), tenMB);
}
public void testInvalidateLRU() {
Cache<String, byte[]> cache=new Cache<>(10*1024*1024,3600, 100*1024*1024); // 10 MB
byte[] fiveMB = new byte[5*1024*1024];
for (int i = 0 ; i <5*1024*1024 ; i++) {
fiveMB[i]=127;
}
byte[] twoMB = new byte[2*1024*1024];
for (int i = 0 ; i <2*1024*1024 ; i++) {
twoMB[i]=127;
}
byte[] fourMB = new byte[4*1024*1024];
for (int i = 0 ; i <4*1024*1024 ; i++) {
fourMB[i]=127;
}
assertTrue(cache.put("five", fiveMB));
assertTrue(cache.put("two", twoMB));
Object dummy = cache.get("five"); // Makes two LRU
assertEquals(dummy, fiveMB);
assertTrue(cache.put("four", fourMB));
assertNull(cache.get("two"));
assertEquals(cache.get("five"), fiveMB);
assertEquals(cache.get("four"), fourMB);
// Same, without the access, just to check
cache=new Cache<>(10*1024*1024,3600, 100*1024*1024); // 10 MB
assertTrue(cache.put("five", fiveMB));
assertTrue(cache.put("two", twoMB));
assertTrue(cache.put("four", fourMB));
assertEquals(cache.get("two"), twoMB);
assertNull(cache.get("five"));
assertEquals(cache.get("four"), fourMB);
}
public void testPutSameKey() {
Cache<String, byte[]> cache=new Cache<>(10*1024*1024,3600, 100*1024*1024); // 10 MB
byte[] fiveMB = new byte[5*1024*1024];
for (int i = 0 ; i <5*1024*1024 ; i++) {
fiveMB[i]=127;
}
byte[] twoMB = new byte[2*1024*1024];
for (int i = 0 ; i <2*1024*1024 ; i++) {
twoMB[i]=127;
}
byte[] fourMB = new byte[4*1024*1024];
for (int i = 0 ; i <4*1024*1024 ; i++) {
fourMB[i]=127;
}
assertTrue(cache.put("five", fiveMB));
assertTrue(cache.put("two", twoMB));
assertEquals(cache.get("two"), twoMB);
assertEquals(cache.get("five"), fiveMB);
assertTrue(cache.put("five", twoMB));
assertEquals(cache.get("five"), twoMB);
assertEquals(cache.get("two"), twoMB);
}
public void testExpire() throws InterruptedException {
Cache<String, String> cache=new Cache<>(10*1024*1024,400, 10000); // 10 MB, .4 sec expire
cache.put("foo", "bar");
cache.put("hey", "ho");
assertEquals(cache.get("foo"), "bar");
assertEquals(cache.get("hey"), "ho");
Thread.sleep(600);
assertNull(cache.get("foo"));
assertNull(cache.get("hey"));
}
public void testInsertSame() {
Cache<String, String> cache=new Cache<>(10*1024*1024,500, 10000); // 10 MB, .5 sec expire
String k = "foo";
String r = "bar";
cache.put(k, r);
assertEquals(cache.size(), 1);
cache.put(k, r);
assertEquals(cache.size(), 1);
}
public void testMaxSize() {
Cache<String, byte[]> cache=new Cache<>(20*1024*1024,500, 3*1024*1024);
byte[] fourMB = new byte[4*1024*1024];
for (int i = 0 ; i <4*1024*1024 ; i++) {
fourMB[i]=127;
}
byte[] twoMB = new byte[2*1024*1024];
for (int i = 0 ; i <2*1024*1024 ; i++) {
twoMB[i]=127;
}
assertFalse(cache.put("four", fourMB));
assertTrue(cache.put("two", twoMB));
assertNull(cache.get("four"));
assertNotNull(cache.get("two"));
}
public void testMaxSizeNoLimit() {
Cache<String, byte[]> cache=new Cache<>(20*1024*1024,500, -1);
byte[] fourMB = new byte[4*1024*1024];
for (int i = 0 ; i <4*1024*1024 ; i++) {
fourMB[i]=127;
}
byte[] twoMB = new byte[2*1024*1024];
for (int i = 0 ; i <2*1024*1024 ; i++) {
twoMB[i]=127;
}
assertTrue(cache.put("four", fourMB));
assertTrue(cache.put("two", twoMB));
assertNotNull(cache.get("four"));
assertNotNull(cache.get("two"));
}
public void testGetKeysAndValuesAndClear() {
Cache<String, String> cache=new Cache<>(10*1024*1024,500, 10000); // 10 MB, .5 sec expire
assertEquals(cache.getKeys().size(), 0);
assertEquals(cache.getValues().size(), 0);
cache.put("a", "b");
cache.put("c", "d");
cache.put("e", "f");
Collection<String> keys = new ArrayList<>();
keys.add("a");
keys.add("c");
keys.add("e");
Collection<String> values = new ArrayList<>();
values.add("b");
values.add("d");
values.add("f");
assertEquals(cache.getKeys().size(), 3);
assertEquals(cache.getValues().size(), 3);
assertTrue(cache.getKeys().containsAll(keys));
assertTrue(cache.getValues().containsAll(values));
cache.clear();
assertEquals(cache.getKeys().size(), 0);
assertEquals(cache.getValues().size(), 0);
}
}
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