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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.shell;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.Random;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Tests the command class with large inputs
*
*/
@RunWith(JUnit4.class)
public class CommandLargeInputsTest {
@Before
public void setUp() throws Exception {
// enable all log statements to ensure there are no problems with
// logging code
Logger.getLogger("com.google.devtools.build.lib.shell.Command").setLevel(Level.FINEST);
}
private byte[] getRandomBytes() {
byte[] randomBytes;
final Random rand = new Random(0xdeadbeef);
randomBytes = new byte[10000];
rand.nextBytes(randomBytes);
return randomBytes;
}
private byte[] getAllByteValues() {
byte[] allByteValues = new byte[Byte.MAX_VALUE - Byte.MIN_VALUE];
for(int i = 0; i < allByteValues.length; i++) {
allByteValues[i] = (byte) (i + Byte.MIN_VALUE);
}
return allByteValues;
}
@Test
public void testCatRandomBinary() throws Exception {
final Command command = new Command(new String[] {"cat"});
byte[] randomBytes = getRandomBytes();
final CommandResult result = command.execute(randomBytes);
assertEquals(0, result.getTerminationStatus().getRawResult());
TestUtil.assertArrayEquals(randomBytes, result.getStdout());
assertEquals(0, result.getStderr().length);
}
@Test
public void testCatRandomBinaryToOutputStream() throws Exception {
final Command command = new Command(new String[] {"cat"});
ByteArrayOutputStream out = new ByteArrayOutputStream();
ByteArrayOutputStream err = new ByteArrayOutputStream();
byte[] randomBytes = getRandomBytes();
final CommandResult result = command.execute(randomBytes,
Command.NO_OBSERVER, out, err);
assertEquals(0, result.getTerminationStatus().getRawResult());
TestUtil.assertArrayEquals(randomBytes, out.toByteArray());
assertEquals(0, err.toByteArray().length);
assertOutAndErrNotAvailable(result);
}
@Test
public void testCatRandomBinaryToErrorStream() throws Exception {
final Command command = new Command(new String[] {"/bin/sh", "-c", "cat >&2"});
ByteArrayOutputStream out = new ByteArrayOutputStream();
ByteArrayOutputStream err = new ByteArrayOutputStream();
byte[] randomBytes = getRandomBytes();
final CommandResult result = command.execute(randomBytes,
Command.NO_OBSERVER, out, err);
assertEquals(0, result.getTerminationStatus().getRawResult());
assertEquals(0, out.toByteArray().length);
TestUtil.assertArrayEquals(randomBytes, err.toByteArray());
assertOutAndErrNotAvailable(result);
}
@Test
public void testCatRandomBinaryFromInputStreamToErrorStream()
throws Exception {
final Command command = new Command(new String[] {"/bin/sh", "-c", "cat >&2"});
ByteArrayOutputStream out = new ByteArrayOutputStream();
ByteArrayOutputStream err = new ByteArrayOutputStream();
byte[] randomBytes = getRandomBytes();
ByteArrayInputStream in = new ByteArrayInputStream(randomBytes);
final CommandResult result = command.execute(in,
Command.NO_OBSERVER, out, err);
assertEquals(0, result.getTerminationStatus().getRawResult());
assertEquals(0, out.toByteArray().length);
TestUtil.assertArrayEquals(randomBytes, err.toByteArray());
assertOutAndErrNotAvailable(result);
}
@Test
public void testStdoutInterleavedWithStdErr() throws Exception {
final Command command = new Command(new String[]{"/bin/bash",
"-c", "for i in $( seq 0 999); do (echo OUT$i >&1) && (echo ERR$i >&2); done"
});
ByteArrayOutputStream out = new ByteArrayOutputStream();
ByteArrayOutputStream err = new ByteArrayOutputStream();
command.execute(Command.NO_INPUT, Command.NO_OBSERVER, out, err);
StringBuilder expectedOut = new StringBuilder();
StringBuilder expectedErr = new StringBuilder();
for (int i = 0; i < 1000; i++) {
expectedOut.append("OUT").append(i).append("\n");
expectedErr.append("ERR").append(i).append("\n");
}
assertEquals(expectedOut.toString(), out.toString("UTF-8"));
assertEquals(expectedErr.toString(), err.toString("UTF-8"));
}
private void assertOutAndErrNotAvailable(final CommandResult result) {
try {
result.getStdout();
fail();
} catch (IllegalStateException e){}
try {
result.getStderr();
fail();
} catch (IllegalStateException e){}
}
@Test
public void testCatAllByteValues() throws Exception {
final Command command = new Command(new String[] {"cat"});
byte[] allByteValues = getAllByteValues();
final CommandResult result = command.execute(allByteValues);
assertEquals(0, result.getTerminationStatus().getRawResult());
assertEquals(0, result.getStderr().length);
TestUtil.assertArrayEquals(allByteValues, result.getStdout());
}
}
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