/*
* Copyright 2015 Ben Manes. All Rights Reserved.
*
* 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.github.benmanes.caffeine.cache;
import static com.github.benmanes.caffeine.testing.IsEmptyMap.emptyMap;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.not;
import static org.hamcrest.Matchers.nullValue;
import java.util.concurrent.CompletableFuture;
import org.hamcrest.Description;
import org.hamcrest.TypeSafeDiagnosingMatcher;
import com.github.benmanes.caffeine.testing.DescriptionBuilder;
/**
* A matcher that evaluates a {@link UnboundedLocalCache} to determine if it is in a valid state.
*
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class IsValidUnboundedLocalCache<K, V>
extends TypeSafeDiagnosingMatcher<UnboundedLocalCache<K, V>> {
DescriptionBuilder desc;
@Override
public void describeTo(Description description) {
description.appendText("valid unbounded cache");
if (desc.getDescription() != description) {
description.appendText(desc.getDescription().toString());
}
}
@Override
protected boolean matchesSafely(UnboundedLocalCache<K, V> map, Description description) {
desc = new DescriptionBuilder(description);
checkMap(map, desc);
return desc.matches();
}
private void checkMap(UnboundedLocalCache<K, V> map, DescriptionBuilder desc) {
if (map.isEmpty()) {
desc.expectThat("empty map", map, emptyMap());
}
map.data.forEach((key, value) -> {
desc.expectThat("non null key", key, is(not(nullValue())));
desc.expectThat("non null value", value, is(not(nullValue())));
if (value instanceof CompletableFuture<?>) {
CompletableFuture<?> future = (CompletableFuture<?>) value;
boolean success = future.isDone() && !future.isCompletedExceptionally();
desc.expectThat("future is done", success, is(true));
desc.expectThat("not null value", future.getNow(null), is(not(nullValue())));
}
});
}
public static <K, V> IsValidUnboundedLocalCache<K, V> valid() {
return new IsValidUnboundedLocalCache<>();
}
}