/
AsyncRunnerImplTest.java
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/
AsyncRunnerImplTest.java
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/*
* Copyright 2021 Google LLC
*
* 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.google.cloud.spanner;
import static com.google.cloud.spanner.SpannerApiFutures.get;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertThrows;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import com.google.api.core.ApiFuture;
import com.google.api.core.ApiFutures;
import com.google.cloud.spanner.TransactionRunner.TransactionCallable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.junit.AfterClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
@RunWith(JUnit4.class)
public class AsyncRunnerImplTest {
private static final ExecutorService executor = Executors.newSingleThreadExecutor();
@AfterClass
public static void teardown() {
executor.shutdown();
}
@SuppressWarnings("unchecked")
@Test
public void testAsyncRunReturnsResultAndCommitResponse() {
final Object expectedResult = new Object();
final CommitResponse expectedCommitResponse = mock(CommitResponse.class);
TransactionRunnerImpl delegate = mock(TransactionRunnerImpl.class);
when(delegate.run(any(TransactionCallable.class))).thenReturn(expectedResult);
when(delegate.getCommitResponse()).thenReturn(expectedCommitResponse);
AsyncRunnerImpl runner = new AsyncRunnerImpl(delegate);
ApiFuture<Object> result =
runner.runAsync(txn -> ApiFutures.immediateFuture(expectedResult), executor);
assertSame(expectedResult, get(result));
assertSame(expectedCommitResponse, get(runner.getCommitResponse()));
assertEquals(
get(runner.getCommitResponse()).getCommitTimestamp(), get(runner.getCommitTimestamp()));
}
@Test
public void testGetCommitTimestampReturnsErrorBeforeRun() {
TransactionRunnerImpl delegate = mock(TransactionRunnerImpl.class);
AsyncRunnerImpl runner = new AsyncRunnerImpl(delegate);
IllegalStateException e =
assertThrows(IllegalStateException.class, () -> runner.getCommitTimestamp());
assertTrue(e.getMessage().contains("runAsync() has not yet been called"));
}
@Test
public void testGetCommitResponseReturnsErrorBeforeRun() {
TransactionRunnerImpl delegate = mock(TransactionRunnerImpl.class);
AsyncRunnerImpl runner = new AsyncRunnerImpl(delegate);
IllegalStateException e =
assertThrows(IllegalStateException.class, () -> runner.getCommitResponse());
assertTrue(e.getMessage().contains("runAsync() has not yet been called"));
}
@Test
public void testGetCommitResponseReturnsErrorIfRunFails() {
final SpannerException expectedException =
SpannerExceptionFactory.newSpannerException(ErrorCode.ALREADY_EXISTS, "Row already exists");
TransactionRunnerImpl delegate = mock(TransactionRunnerImpl.class);
when(delegate.getCommitResponse()).thenThrow(expectedException);
AsyncRunnerImpl runner = new AsyncRunnerImpl(delegate);
runner.runAsync(txn -> ApiFutures.immediateFailedFuture(expectedException), executor);
SpannerException e =
assertThrows(SpannerException.class, () -> get(runner.getCommitResponse()));
assertSame(expectedException, e);
}
@SuppressWarnings("unchecked")
@Test
public void testRunAsyncFailsIfCalledMultipleTimes() {
final Object result = new Object();
TransactionRunnerImpl delegate = mock(TransactionRunnerImpl.class);
when(delegate.run(any(TransactionCallable.class))).thenReturn(result);
AsyncRunnerImpl runner = new AsyncRunnerImpl(delegate);
runner.runAsync(txn -> ApiFutures.immediateFuture(result), executor);
IllegalStateException e =
assertThrows(
IllegalStateException.class,
() -> runner.runAsync(txn -> ApiFutures.immediateFuture(null), executor));
assertTrue(e.getMessage().contains("runAsync() can only be called once"));
}
}