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Merge pull request #52 from Doha2012/master 

Modify GuavaCacheTest
This commit is contained in:
Eugen 2014-10-09 14:14:14 +03:00
parent 2e4223b42e 5a97c3428a
commit 0e3a17b611
1 changed files with 18 additions and 43 deletions
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61
guava/src/test/java/org/baeldung/guava/GuavaCacheTest.java
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@ -2,6 +2,7 @@ package org.baeldung.guava;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import java.util.HashMap;
import java.util.Map;
@ -24,70 +25,66 @@ public class GuavaCacheTest {
public void whenCacheMiss_thenAutoLoad() {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().build(loader);
assertEquals(0, cache.size());
assertEquals("HELLO", cache.getUnchecked("hello"));
assertEquals(1, cache.size());
}
@Test
public void whenCacheReachMaxSize_thenEviction() {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().maximumSize(3).build(loader);
assertEquals(0, cache.size());
cache.getUnchecked("first");
cache.getUnchecked("second");
cache.getUnchecked("third");
cache.getUnchecked("forth");
assertEquals(3, cache.size());
assertNull(cache.getIfPresent("first"));
assertEquals("FORTH", cache.getIfPresent("forth"));
}
@Test
public void whenCacheReachMaxWeight_thenEviction() {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final Weigher<String, String> weighByLength = new Weigher<String, String>() {
@Override
public int weigh(final String key, final String value) {
return value.length();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().maximumWeight(16).weigher(weighByLength).build(loader);
assertEquals(0, cache.size());
cache.getUnchecked("first");
cache.getUnchecked("second");
cache.getUnchecked("third");
cache.getUnchecked("last");
assertEquals(3, cache.size());
assertNull(cache.getIfPresent("first"));
assertEquals("LAST", cache.getIfPresent("last"));
}
@Test
public void whenEntryIdle_thenEviction() throws InterruptedException {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().expireAfterAccess(2, TimeUnit.MILLISECONDS).build(loader);
cache.getUnchecked("hello");
assertEquals(1, cache.size());
@ -95,83 +92,70 @@ public class GuavaCacheTest {
Thread.sleep(300);
cache.getUnchecked("test");
assertEquals(1, cache.size());
assertNull(cache.getIfPresent("hello"));
}
@Test
public void whenEntryLiveTimeExpire_thenEviction() throws InterruptedException {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().expireAfterWrite(2, TimeUnit.MILLISECONDS).build(loader);
cache.getUnchecked("hello");
assertEquals(1, cache.size());
Thread.sleep(300);
cache.getUnchecked("test");
assertEquals(1, cache.size());
assertNull(cache.getIfPresent("hello"));
}
@Test
public void whenWeekKeyHasNoRef_thenRemoveFromCache() {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().weakKeys().build(loader);
assertEquals(0, cache.size());
}
@Test
public void whenSoftValue_thenRemoveFromCache() {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().softValues().build(loader);
assertEquals(0, cache.size());
}
@Test
public void whenNullValue_thenOptional() {
final CacheLoader<String, Optional<String>> loader = new CacheLoader<String, Optional<String>>() {
@Override
public Optional<String> load(final String key) {
public final Optional<String> load(final String key) {
return Optional.fromNullable(getSuffix(key));
}
};
final LoadingCache<String, Optional<String>> cache = CacheBuilder.newBuilder().build(loader);
assertEquals("txt", cache.getUnchecked("text.txt").get());
assertFalse(cache.getUnchecked("hello").isPresent());
}
@Test
public void whenLiveTimeEnd_thenRefresh() {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().refreshAfterWrite(1, TimeUnit.MINUTES).build(loader);
assertEquals(0, cache.size());
}
@ -179,49 +163,40 @@ public class GuavaCacheTest {
public void whenPreloadCache_thenUsePutAll() {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().build(loader);
assertEquals(0, cache.size());
final Map<String, String> map = new HashMap<String, String>();
map.put("first", "FIRST");
map.put("second", "SECOND");
cache.putAll(map);
assertEquals(2, cache.size());
}
@Test
public void whenEntryRemovedFromCache_thenNotify() {
final CacheLoader<String, String> loader = new CacheLoader<String, String>() {
@Override
public String load(final String key) {
public final String load(final String key) {
return key.toUpperCase();
}
};
final RemovalListener<String, String> listener = new RemovalListener<String, String>() {
@Override
public void onRemoval(final RemovalNotification<String, String> n) {
if (n.wasEvicted()) {
final String cause = n.getCause().name();
assertEquals(RemovalCause.SIZE.toString(), cause);
}
}
};
final LoadingCache<String, String> cache = CacheBuilder.newBuilder().maximumSize(3).removalListener(listener).build(loader);
cache.getUnchecked("first");
cache.getUnchecked("second");
cache.getUnchecked("third");
cache.getUnchecked("last");
assertEquals(3, cache.size());
}