46 lines
1.3 KiB
Java
46 lines
1.3 KiB
Java
/*
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* Copyright (C) 2014 The Dagger Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dagger.internal;
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import static com.google.common.truth.Truth.assertThat;
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import java.util.concurrent.atomic.AtomicInteger;
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import javax.inject.Provider;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.JUnit4;
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/**
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* Tests {@link SingleCheck}.
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*/
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@RunWith(JUnit4.class)
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public class SingleCheckTest {
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@Test(expected = NullPointerException.class)
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public void create_nullPointerException() {
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SingleCheck.provider(null);
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}
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@Test
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public void get() {
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AtomicInteger integer = new AtomicInteger();
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Provider<Integer> provider = SingleCheck.provider(integer::getAndIncrement);
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assertThat(provider.get()).isEqualTo(0);
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assertThat(provider.get()).isEqualTo(0);
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assertThat(provider.get()).isEqualTo(0);
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}
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}
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