| // Copyright 2022 The Bazel Authors. 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.google.devtools.build.lib.query2.common; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static com.google.common.util.concurrent.Futures.immediateVoidFuture; |
| import static org.junit.Assert.assertThrows; |
| |
| import com.google.common.util.concurrent.MoreExecutors; |
| import com.google.common.util.concurrent.SettableFuture; |
| import com.google.devtools.build.lib.query2.common.AbstractBlazeQueryEnvironment.QueryTaskFutureImpl; |
| import com.google.devtools.build.lib.query2.engine.QueryEnvironment.QueryTaskFuture; |
| import com.google.devtools.build.lib.query2.engine.QueryException; |
| import com.google.devtools.build.lib.server.FailureDetails.ActionQuery.Code; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executors; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| @RunWith(JUnit4.class) |
| public class QueryTaskFutureImplTest { |
| @Test |
| public void whenSucceedsOrIsCancelledCall_inputFutureSuccess() |
| throws InterruptedException, ExecutionException { |
| SettableFuture<Void> inputFuture = SettableFuture.create(); |
| |
| QueryTaskFuture<String> nextFuture = |
| QueryTaskFutureImpl.whenSucceedsOrIsCancelledCall( |
| QueryTaskFutureImpl.ofDelegate(inputFuture), |
| () -> "Callback Return", |
| MoreExecutors.listeningDecorator(Executors.newSingleThreadExecutor())); |
| |
| inputFuture.setFuture(immediateVoidFuture()); |
| var unused = ((QueryTaskFutureImpl<String>) nextFuture).get(); |
| assertThat(nextFuture.getIfSuccessful()).isEqualTo("Callback Return"); |
| } |
| |
| @Test |
| public void whenSucceedsOrCancelsCall_inputFutureCancels() |
| throws InterruptedException, ExecutionException { |
| QueryTaskFutureImpl<Void> inputQueryTaskFutureImpl = |
| QueryTaskFutureImpl.ofDelegate(SettableFuture.create()); |
| |
| QueryTaskFuture<String> nextFuture = |
| QueryTaskFutureImpl.whenSucceedsOrIsCancelledCall( |
| inputQueryTaskFutureImpl, |
| () -> "Callback Return", |
| MoreExecutors.listeningDecorator(Executors.newSingleThreadExecutor())); |
| |
| var unused1 = inputQueryTaskFutureImpl.cancel(true); |
| var unused2 = ((QueryTaskFutureImpl<String>) nextFuture).get(); |
| assertThat(nextFuture.getIfSuccessful()).isEqualTo("Callback Return"); |
| } |
| |
| @Test |
| public void whenSucceedsOrCancelsCall_inputFutureFails() |
| throws InterruptedException, ExecutionException { |
| SettableFuture<Void> inputFuture = SettableFuture.create(); |
| |
| QueryTaskFuture<String> nextFuture = |
| QueryTaskFutureImpl.whenSucceedsOrIsCancelledCall( |
| QueryTaskFutureImpl.ofDelegate(inputFuture), |
| () -> "Callback Return", |
| MoreExecutors.listeningDecorator(Executors.newSingleThreadExecutor())); |
| |
| QueryException queryException = |
| new QueryException("Deliberate failure", Code.ACTION_QUERY_UNKNOWN); |
| inputFuture.setException(queryException); |
| |
| ExecutionException thrownFromDirectGet = |
| assertThrows(ExecutionException.class, ((QueryTaskFutureImpl<String>) nextFuture)::get); |
| Throwable cause = thrownFromDirectGet.getCause(); |
| assertThat(cause).isInstanceOf(QueryException.class); |
| assertThat(thrownFromDirectGet).hasMessageThat().contains("Deliberate failure"); |
| |
| IllegalStateException thrownFromGetIfSuccessful = |
| assertThrows(IllegalStateException.class, nextFuture::getIfSuccessful); |
| assertThat(thrownFromGetIfSuccessful) |
| .hasCauseThat() |
| .hasMessageThat() |
| .isEqualTo(thrownFromDirectGet.getMessage()); |
| } |
| } |