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// 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.packages;
import static com.google.common.truth.Truth.assertThat;
import static com.google.devtools.build.lib.vfs.FileSystemUtils.writeIsoLatin1;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import com.google.devtools.build.lib.events.Event;
import com.google.devtools.build.lib.packages.util.PackageLoadingTestCase;
import com.google.devtools.build.lib.packages.util.SubincludePreprocessor;
import com.google.devtools.build.lib.syntax.Environment;
import com.google.devtools.build.lib.syntax.Mutability;
import com.google.devtools.build.lib.syntax.ParserInputSource;
import com.google.devtools.build.lib.testutil.Suite;
import com.google.devtools.build.lib.testutil.TestSpec;
import com.google.devtools.build.lib.vfs.Path;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.io.IOException;
import java.nio.CharBuffer;
import java.nio.charset.StandardCharsets;
@TestSpec(size = Suite.MEDIUM_TESTS)
@RunWith(JUnit4.class)
public class SubincludePreprocessorTest extends PackageLoadingTestCase {
private Path packageRoot;
protected SubincludePreprocessor preprocessor;
protected Environment globalEnv =
Environment.builder(Mutability.create("test"))
.setGlobals(Environment.BUILD)
.setEventHandler(reporter)
.build();
public SubincludePreprocessorTest() {}
@Before
public final void createPreprocessor() throws Exception {
preprocessor = new SubincludePreprocessor(scratch.getFileSystem(), getPackageManager());
packageRoot = rootDirectory.getChild("preprocessing");
assertTrue(packageRoot.createDirectory());
reporter.removeHandler(failFastHandler);
}
@After
public final void resetPreprocessor() throws Exception {
preprocessor = null;
}
private ParserInputSource createInputSource(String... lines) throws Exception {
Path buildFile = packageRoot.getChild("BUILD");
writeIsoLatin1(buildFile, lines);
ParserInputSource in = ParserInputSource.create(buildFile);
return in;
}
protected Preprocessor.Result preprocess(ParserInputSource in, String packageName)
throws IOException, InterruptedException {
Path buildFilePath = packageRoot.getRelative(in.getPath());
byte[] buildFileBytes =
StandardCharsets.ISO_8859_1.encode(CharBuffer.wrap(in.getContent())).array();
Preprocessor.Result result =
preprocessor.preprocess(
buildFilePath,
buildFileBytes,
packageName, /*globber=*/
null,
globalEnv.getGlobals(),
/*ruleNames=*/ null);
Event.replayEventsOn(reporter, result.events);
return result;
}
@Test
public void testPreprocessingInclude() throws Exception {
ParserInputSource in = createInputSource("subinclude('//foo:bar')");
scratch.file("foo/BUILD");
scratch.file("foo/bar", "genrule('turtle1')", "subinclude('//foo:baz')");
scratch.file("foo/baz", "genrule('turtle2')");
String out = assertPreprocessingSucceeds(in);
assertThat(out).containsMatch("turtle1");
assertThat(out).containsMatch("turtle2");
assertThat(out).containsMatch("mocksubinclude\\('//foo:bar', *'/workspace/foo/bar'\\)");
assertThat(out).containsMatch("mocksubinclude\\('//foo:baz', *'/workspace/foo/baz'\\)");
}
@Test
public void testSubincludeNotFound() throws Exception {
ParserInputSource in = createInputSource("subinclude('//nonexistent:bar')");
scratch.file("foo/BUILD");
String out = assertPreprocessingSucceeds(in);
assertThat(out).containsMatch("mocksubinclude\\('//nonexistent:bar', *''\\)");
assertContainsEvent("Cannot find subincluded file");
}
@Test
public void testError() throws Exception {
ParserInputSource in = createInputSource("subinclude('//foo:bar')");
scratch.file("foo/BUILD");
scratch.file("foo/bar", SubincludePreprocessor.TRANSIENT_ERROR);
try {
preprocess(in, "path/to/package");
fail();
} catch (IOException e) {
// Expected.
}
}
public String assertPreprocessingSucceeds(ParserInputSource in) throws Exception {
Preprocessor.Result out = preprocess(in, "path/to/package");
assertTrue(out.preprocessed);
// Check that the preprocessed file looks plausible:
assertEquals(in.getPath(), out.result.getPath());
String outString = new String(out.result.getContent());
outString = outString.replaceAll("[\n \t]", ""); // for easier regexps
return outString;
}
}
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