| // Copyright 2015 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.analysis.actions; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static com.google.devtools.build.lib.actions.util.ActionsTestUtil.NULL_ACTION_OWNER; |
| |
| import com.google.devtools.build.lib.actions.ActionOwner; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.util.OnDemandString; |
| import java.util.Random; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| @RunWith(JUnit4.class) |
| public class FileWriteActionTest extends FileWriteActionTestCase { |
| |
| @Override |
| protected FileWriteAction createAction( |
| ActionOwner actionOwner, Artifact outputArtifact, String data, boolean makeExecutable) { |
| return FileWriteAction.create( |
| actionOwner, outputArtifact, data, makeExecutable, Compression.DISALLOW); |
| } |
| |
| @Test |
| public void testNoInputs() { |
| checkNoInputsByDefault(); |
| } |
| |
| @Test |
| public void testDestinationArtifactIsOutput() { |
| checkDestinationArtifactIsOutput(); |
| } |
| |
| @Test |
| public void testCanWriteNonExecutableFile() throws Exception { |
| checkCanWriteNonExecutableFile(); |
| } |
| |
| @Test |
| public void testCanWriteExecutableFile() throws Exception { |
| checkCanWriteExecutableFile(); |
| } |
| |
| @Test |
| public void testComputesConsistentKeys() throws Exception { |
| checkComputesConsistentKeys(); |
| } |
| |
| @Test |
| public void testFileWriteActionWithShortString() throws Exception { |
| Artifact outputArtifact = getBinArtifactWithNoOwner("destination.txt"); |
| String contents = "Hello world"; |
| FileWriteAction action = |
| FileWriteAction.create( |
| NULL_ACTION_OWNER, |
| outputArtifact, |
| contents, |
| /*makeExecutable=*/ false, |
| Compression.DISALLOW); |
| assertThat(action.getFileContents()).isEqualTo(contents); |
| } |
| |
| @Test |
| public void testFileWriteActionWithLazyString() throws Exception { |
| Artifact outputArtifact = getBinArtifactWithNoOwner("destination.txt"); |
| final String backingString = "Hello world"; |
| OnDemandString contents = |
| new OnDemandString() { |
| @Override |
| public String toString() { |
| return backingString; |
| } |
| }; |
| FileWriteAction action = |
| FileWriteAction.create( |
| NULL_ACTION_OWNER, |
| outputArtifact, |
| contents, |
| /*makeExecutable=*/ false, |
| Compression.DISALLOW); |
| assertThat(action.getFileContents()).isEqualTo(backingString); |
| } |
| |
| /** |
| * Returns a string filled with (deterministic) random characters to get a string that won't |
| * compress to a tiny size. |
| */ |
| private String generateLongRandomString() { |
| StringBuilder sb = new StringBuilder(); |
| Random random = new Random(0); |
| for (int i = 0; i < 16 * 1024; ++i) { |
| char c = (char) random.nextInt(128); |
| sb.append(c); |
| } |
| return sb.toString(); |
| } |
| |
| @Test |
| public void testFileWriteActionWithLongStringAndCompression() throws Exception { |
| Artifact outputArtifact = getBinArtifactWithNoOwner("destination.txt"); |
| String contents = generateLongRandomString(); |
| FileWriteAction action = |
| FileWriteAction.create( |
| NULL_ACTION_OWNER, |
| outputArtifact, |
| contents, |
| /*makeExecutable=*/ false, |
| Compression.ALLOW); |
| assertThat(action.getFileContents()).isEqualTo(contents); |
| } |
| |
| @Test |
| public void testFileWriteActionWithCompressionDoesNotForceLazyString() throws Exception { |
| Artifact outputArtifact = getBinArtifactWithNoOwner("destination.txt"); |
| final String backingContents = generateLongRandomString(); |
| |
| class ForceCountingOnDemandString extends OnDemandString { |
| public int forced = 0; |
| |
| @Override |
| public String toString() { |
| forced += 1; |
| return backingContents; |
| } |
| } |
| ForceCountingOnDemandString contents = new ForceCountingOnDemandString(); |
| FileWriteAction action = |
| FileWriteAction.create( |
| NULL_ACTION_OWNER, |
| outputArtifact, |
| contents, |
| /*makeExecutable=*/ false, |
| Compression.ALLOW); |
| |
| // The string should only be forced once we actually read it, not when the action is |
| // constructed. |
| assertThat(contents.forced).isEqualTo(0); |
| assertThat(action.getFileContents()).isEqualTo(backingContents); |
| assertThat(contents.forced).isEqualTo(1); |
| } |
| } |