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// Copyright 2014 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.rules.cpp;
import static com.google.common.truth.Truth.assertThat;
import static java.nio.charset.StandardCharsets.UTF_8;
import com.google.devtools.build.lib.util.io.FileOutErr;
import com.google.devtools.build.lib.vfs.FileSystem;
import com.google.devtools.build.lib.vfs.inmemoryfs.InMemoryFileSystem;
import java.io.ByteArrayOutputStream;
import java.io.FilterOutputStream;
import java.io.IOException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Test for {@link ShowIncludesFilter}. */
@RunWith(JUnit4.class)
public class ShowIncludesFilterTest {
private ShowIncludesFilter showIncludesFilter;
private ByteArrayOutputStream output;
private FilterOutputStream filterOutputStream;
private FileSystem fs;
private FileOutErr outErr;
@Before
public void setUpOutputStreams() throws IOException {
showIncludesFilter = new ShowIncludesFilter("foo.cpp");
output = new ByteArrayOutputStream();
filterOutputStream = showIncludesFilter.getFilteredOutputStream(output);
fs = new InMemoryFileSystem();
fs.getPath("/out").createDirectory();
}
private byte[] getBytes(String str) {
return str.getBytes(UTF_8);
}
@Test
public void testNotMatch() throws IOException {
// Normal output message with newline
filterOutputStream.write(getBytes("I am compiling\n"));
assertThat(output.toString()).isEqualTo("I am compiling\n");
}
@Test
public void testNotMatchThenFlushing() throws IOException {
// Normal output message without newline
filterOutputStream.write(getBytes("Still compiling"));
assertThat(output.toString()).isEmpty();
filterOutputStream.flush();
// flush to output should succeed
assertThat(output.toString()).isEqualTo("Still compiling");
}
@Test
public void testMatchPartOfNotePrefix() throws IOException {
// Prefix of "Note: including file:"
filterOutputStream.write(getBytes("Note: "));
filterOutputStream.flush();
// flush to output shouldn't work, because there's still a chance to match.
assertThat(output.toString()).isEmpty();
// "Note: other info" doesn't match "Note: including file:", it's ok to flush.
filterOutputStream.write(getBytes("other info"));
filterOutputStream.flush();
assertThat(output.toString()).isEqualTo("Note: other info");
}
@Test
public void testMatchAllOfNotePrefix() throws IOException {
// "Note: including file:" is the prefix
filterOutputStream.write(getBytes("Note: including file: bar.h"));
filterOutputStream.flush();
// flush to output should not work, waiting for newline
assertThat(output.toString()).isEmpty();
filterOutputStream.write(getBytes("\n"));
// It's a match, output should be filtered, dependency on bar.h should be found.
assertThat(output.toString()).isEmpty();
assertThat(showIncludesFilter.getDependencies()).contains("bar.h");
}
@Test
public void testMatchSourceFileName() throws IOException {
filterOutputStream.write(getBytes("foo.cpp\n"));
// It's a match, output should be filtered, no dependency found.
assertThat(output.toString()).isEmpty();
assertThat(showIncludesFilter.getDependencies()).isEmpty();
}
@Test
public void testMatchPartOfSourceFileName() throws IOException {
filterOutputStream.write(getBytes("foo"));
filterOutputStream.flush();
assertThat(output.toString()).isEmpty();
filterOutputStream.write(getBytes(".h"));
filterOutputStream.flush();
assertThat(output.toString()).isEqualTo("foo.h");
}
@Test
public void testOnFileOutErr() throws IOException {
outErr = new FileOutErr(fs.getPath("/out/stdout"), fs.getPath("/out/stderr"));
ShowIncludesFilter showIncludesFilterForStdout = new ShowIncludesFilter("foo.cpp");
ShowIncludesFilter showIncludesFilterForStderr = new ShowIncludesFilter("foo.cpp");
outErr.setOutputFilter(showIncludesFilterForStdout);
outErr.setErrorFilter(showIncludesFilterForStderr);
outErr.getOutputStream().write(getBytes("Note: including file: bar1.h\n"));
outErr.getErrorStream().write(getBytes("Note: including file: bar2.h\n"));
assertThat(showIncludesFilterForStdout.getDependencies()).contains("bar1.h");
assertThat(showIncludesFilterForStderr.getDependencies()).contains("bar2.h");
}
}
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