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DefaultPolicyEnforcerProviderTest.java
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DefaultPolicyEnforcerProviderTest.java
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/*
* Copyright (c) 2022 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.policies.enforcement;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.verifyNoInteractions;
import static org.mockito.Mockito.when;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import org.eclipse.ditto.internal.utils.cache.entry.Entry;
import org.eclipse.ditto.internal.utils.cacheloaders.EnforcementCacheKey;
import org.eclipse.ditto.policies.model.PolicyId;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.junit.MockitoJUnitRunner;
import com.github.benmanes.caffeine.cache.AsyncCacheLoader;
import akka.dispatch.MessageDispatcher;
@RunWith(MockitoJUnitRunner.class)
public final class DefaultPolicyEnforcerProviderTest {
@Mock
public AsyncCacheLoader<EnforcementCacheKey, Entry<PolicyEnforcer>> cacheLoader;
@Mock
public MessageDispatcher messageDispatcher;
private DefaultPolicyEnforcerProvider underTest;
@Before
public void setup() {
underTest = new DefaultPolicyEnforcerProvider(cacheLoader, messageDispatcher);
}
@Test
public void getPolicyEnforcer() throws Exception {
final PolicyId policyId = PolicyId.generateRandom();
final PolicyEnforcer policyEnforcer = Mockito.mock(PolicyEnforcer.class);
final CompletableFuture entryCompletableFuture =
CompletableFuture.completedFuture(Entry.of(0, policyEnforcer));
when(cacheLoader.asyncLoad(EnforcementCacheKey.of(policyId), messageDispatcher))
.thenReturn(entryCompletableFuture);
final Optional<PolicyEnforcer> optionalPolicyEnforcer =
underTest.getPolicyEnforcer(policyId).toCompletableFuture().join();
assertThat(optionalPolicyEnforcer).contains(policyEnforcer);
}
@Test
public void getPolicyEnforcerWithNullId() throws Exception {
final Optional<PolicyEnforcer> optionalPolicyEnforcer =
underTest.getPolicyEnforcer(null).toCompletableFuture().join();
assertThat(optionalPolicyEnforcer).isEmpty();
verifyNoInteractions(cacheLoader, messageDispatcher);
}
@Test
public void getPolicyEnforcerWhenEnforcerIsNotPresent() throws Exception {
final PolicyId policyId = PolicyId.generateRandom();
final CompletableFuture entryCompletableFuture =
CompletableFuture.completedFuture(Entry.nonexistent());
when(cacheLoader.asyncLoad(EnforcementCacheKey.of(policyId), messageDispatcher))
.thenReturn(entryCompletableFuture);
final Optional<PolicyEnforcer> optionalPolicyEnforcer =
underTest.getPolicyEnforcer(policyId).toCompletableFuture().join();
assertThat(optionalPolicyEnforcer).isEmpty();
}
@Test
public void getPolicyEnforcerWhenCacheLoaderThrowsException() throws Exception {
final PolicyId policyId = PolicyId.generateRandom();
when(cacheLoader.asyncLoad(EnforcementCacheKey.of(policyId), messageDispatcher))
.thenThrow(new IllegalStateException("This is expected"));
final Optional<PolicyEnforcer> optionalPolicyEnforcer =
underTest.getPolicyEnforcer(policyId).toCompletableFuture().join();
assertThat(optionalPolicyEnforcer).isEmpty();
}
@Test
public void getPolicyEnforcerWhenCacheLoaderReturnsFailedFuture() throws Exception {
final PolicyId policyId = PolicyId.generateRandom();
when(cacheLoader.asyncLoad(EnforcementCacheKey.of(policyId), messageDispatcher))
.thenReturn(CompletableFuture.failedFuture(new IllegalStateException("This is expected")));
final Optional<PolicyEnforcer> optionalPolicyEnforcer =
underTest.getPolicyEnforcer(policyId).toCompletableFuture().join();
assertThat(optionalPolicyEnforcer).isEmpty();
}
}