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// Copyright 2014 Google Inc. 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.util;
import static org.junit.Assert.assertEquals;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.io.PrintStream;
/**
* Tests for {@link AnsiStrippingOutputStream}.
*/
@RunWith(JUnit4.class)
public class AnsiStrippingOutputStreamTest {
ByteArrayOutputStream output;
PrintStream input;
private static final String ESCAPE = "\u001b[";
@Before
public void setUp() throws Exception {
output = new ByteArrayOutputStream();
OutputStream inputStream = new AnsiStrippingOutputStream(output);
input = new PrintStream(inputStream);
}
private String getOutput(String... fragments) throws Exception {
for (String fragment: fragments) {
input.print(fragment);
}
return new String(output.toByteArray(), "ISO8859-1");
}
@Test
public void doesNotFailHorribly() throws Exception {
assertEquals("Love", getOutput("Love"));
}
@Test
public void canStripAnsiCode() throws Exception {
assertEquals("Love", getOutput(ESCAPE + "32mLove" + ESCAPE + "m"));
}
@Test
public void recognizesAnsiCodeWhenBrokenUp() throws Exception {
assertEquals("Love", getOutput("\u001b", "[", "mLove"));
}
@Test
public void handlesOnlyEscCorrectly() throws Exception {
assertEquals("\u001bLove", getOutput("\u001bLove"));
}
@Test
public void handlesEscInPlaceOfControlCharCorrectly() throws Exception {
assertEquals(ESCAPE + "31;42Love",
getOutput(ESCAPE + "31;42" + ESCAPE + "1mLove"));
}
@Test
public void handlesTwoEscapeSequencesCorrectly() throws Exception {
assertEquals("Love",
getOutput(ESCAPE + "32m" + ESCAPE + "1m" + "Love"));
}
}
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