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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.singlejar;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
/**
* Unit tests for {@link ConcatenateStrategy}.
*/
@RunWith(JUnit4.class)
public class ConcatenateStrategyTest {
private String merge(String... inputs) throws IOException {
return mergeInternal(true, inputs);
}
private String mergeNoNewLine(String... inputs) throws IOException {
return mergeInternal(false, inputs);
}
private String mergeInternal(boolean appendNewLine, String... inputs) throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
ConcatenateStrategy strategy = new ConcatenateStrategy(appendNewLine);
for (String input : inputs) {
strategy.merge(new ByteArrayInputStream(input.getBytes(UTF_8)), out);
}
strategy.finish(out);
return new String(out.toByteArray(), UTF_8);
}
@Test
public void testSingleInput() throws IOException {
assertEquals("a", merge("a"));
assertEquals("a", mergeNoNewLine("a"));
}
@Test
public void testTwoInputs() throws IOException {
assertEquals("a\nb", merge("a\n", "b"));
assertEquals("a\nb", mergeNoNewLine("a\n", "b"));
}
@Test
public void testAutomaticNewline() throws IOException {
assertEquals("a\nb", merge("a", "b"));
assertEquals("ab", mergeNoNewLine("a", "b"));
}
@Test
public void testAutomaticNewlineAndEmptyFile() throws IOException {
assertEquals("a\nb", merge("a", "", "b"));
assertEquals("ab", mergeNoNewLine("a", "", "b"));
}
}
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