/*
* Copyright 2012-2016 the original author or authors.
*
* 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 org.springframework.boot.devtools.livereload;
import java.io.ByteArrayInputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link ConnectionInputStream}.
*
* @author Phillip Webb
*/
@SuppressWarnings("resource")
public class ConnectionInputStreamTests {
private static final byte[] NO_BYTES = {};
@Rule
public ExpectedException thrown = ExpectedException.none();
@Test
public void readHeader() throws Exception {
String header = "";
for (int i = 0; i < 100; i++) {
header += "x-something-" + i
+ ": xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
}
String data = header + "\r\n\r\n" + "content\r\n";
ConnectionInputStream inputStream = new ConnectionInputStream(
new ByteArrayInputStream(data.getBytes()));
assertThat(inputStream.readHeader()).isEqualTo(header);
}
@Test
public void readFully() throws Exception {
byte[] bytes = "the data that we want to read fully".getBytes();
LimitedInputStream source = new LimitedInputStream(
new ByteArrayInputStream(bytes), 2);
ConnectionInputStream inputStream = new ConnectionInputStream(source);
byte[] buffer = new byte[bytes.length];
inputStream.readFully(buffer, 0, buffer.length);
assertThat(buffer).isEqualTo(bytes);
}
@Test
public void checkedRead() throws Exception {
ConnectionInputStream inputStream = new ConnectionInputStream(
new ByteArrayInputStream(NO_BYTES));
this.thrown.expect(IOException.class);
this.thrown.expectMessage("End of stream");
inputStream.checkedRead();
}
@Test
public void checkedReadArray() throws Exception {
ConnectionInputStream inputStream = new ConnectionInputStream(
new ByteArrayInputStream(NO_BYTES));
this.thrown.expect(IOException.class);
this.thrown.expectMessage("End of stream");
byte[] buffer = new byte[100];
inputStream.checkedRead(buffer, 0, buffer.length);
}
private static class LimitedInputStream extends FilterInputStream {
private final int max;
protected LimitedInputStream(InputStream in, int max) {
super(in);
this.max = max;
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
return super.read(b, off, Math.min(len, this.max));
}
}
}