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/*
* Copyright (C) 2014 The Dagger Authors.
*
* 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 dagger.producers.internal;
import static com.google.common.truth.Truth.assertThat;
import static org.junit.Assert.fail;
import com.google.common.collect.ImmutableSet;
import com.google.common.util.concurrent.ListenableFuture;
import dagger.producers.Producer;
import dagger.producers.Producers;
import java.util.Collections;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests {@link SetProducer}.
*/
@RunWith(JUnit4.class)
public class SetProducerTest {
@Test
public void success() throws Exception {
Producer<Set<Integer>> producer =
SetProducer.<Integer>builder(1, 1)
.addProducer(Producers.immediateProducer(1))
.addCollectionProducer(Producers.<Set<Integer>>immediateProducer(ImmutableSet.of(5, 7)))
.build();
assertThat(producer.get().get()).containsExactly(1, 5, 7);
}
@Test
public void delegateNpe() throws Exception {
Producer<Set<Integer>> producer =
SetProducer.<Integer>builder(1, 0)
.addProducer(Producers.<Integer>immediateProducer(null))
.build();
ListenableFuture<Set<Integer>> future = producer.get();
try {
future.get();
fail();
} catch (ExecutionException e) {
assertThat(e).hasCauseThat().isInstanceOf(NullPointerException.class);
}
}
@Test
public void delegateSetNpe() throws Exception {
Producer<Set<Integer>> producer =
SetProducer.<Integer>builder(0, 1)
.addCollectionProducer(Producers.<Set<Integer>>immediateProducer(null))
.build();
ListenableFuture<Set<Integer>> future = producer.get();
try {
future.get();
fail();
} catch (ExecutionException e) {
assertThat(e).hasCauseThat().isInstanceOf(NullPointerException.class);
}
}
@Test
public void delegateElementNpe() throws Exception {
Producer<Set<Integer>> producer =
SetProducer.<Integer>builder(0, 2)
.addCollectionProducer(Producers.<Set<Integer>>immediateProducer(ImmutableSet.of(1, 2)))
.addCollectionProducer(
Producers.<Set<Integer>>immediateProducer(Collections.<Integer>singleton(null)))
.build();
ListenableFuture<Set<Integer>> future = producer.get();
try {
future.get();
fail();
} catch (ExecutionException e) {
assertThat(e).hasCauseThat().isInstanceOf(NullPointerException.class);
}
}
}