/*
* 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.ByteArrayOutputStream;
import java.util.Arrays;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link Frame}.
*
* @author Phillip Webb
*/
public class FrameTests {
@Rule
public ExpectedException thrown = ExpectedException.none();
@Test
public void payloadMustNotBeNull() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Payload must not be null");
new Frame((String) null);
}
@Test
public void typeMustNotBeNull() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Type must not be null");
new Frame((Frame.Type) null);
}
@Test
public void textPayload() throws Exception {
Frame frame = new Frame("abc");
assertThat(frame.getType()).isEqualTo(Frame.Type.TEXT);
assertThat(frame.getPayload()).isEqualTo("abc".getBytes());
}
@Test
public void typedPayload() throws Exception {
Frame frame = new Frame(Frame.Type.CLOSE);
assertThat(frame.getType()).isEqualTo(Frame.Type.CLOSE);
assertThat(frame.getPayload()).isEqualTo(new byte[] {});
}
@Test
public void writeSmallPayload() throws Exception {
String payload = createString(1);
Frame frame = new Frame(payload);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
frame.write(bos);
assertThat(bos.toByteArray()).isEqualTo(new byte[] { (byte) 0x81, 0x01, 0x41 });
}
@Test
public void writeLargePayload() throws Exception {
String payload = createString(126);
Frame frame = new Frame(payload);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
frame.write(bos);
byte[] bytes = bos.toByteArray();
assertThat(bytes.length).isEqualTo(130);
assertThat(bytes[0]).isEqualTo((byte) 0x81);
assertThat(bytes[1]).isEqualTo((byte) 0x7E);
assertThat(bytes[2]).isEqualTo((byte) 0x00);
assertThat(bytes[3]).isEqualTo((byte) 126);
assertThat(bytes[4]).isEqualTo((byte) 0x41);
assertThat(bytes[5]).isEqualTo((byte) 0x41);
}
@Test
public void readFragmentedNotSupported() throws Exception {
byte[] bytes = new byte[] { 0x0F };
this.thrown.expect(IllegalStateException.class);
this.thrown.expectMessage("Fragmented frames are not supported");
Frame.read(newConnectionInputStream(bytes));
}
@Test
public void readLargeFramesNotSupported() throws Exception {
byte[] bytes = new byte[] { (byte) 0x80, (byte) 0xFF };
this.thrown.expect(IllegalStateException.class);
this.thrown.expectMessage("Large frames are not supported");
Frame.read(newConnectionInputStream(bytes));
}
@Test
public void readSmallTextFrame() throws Exception {
byte[] bytes = new byte[] { (byte) 0x81, (byte) 0x02, 0x41, 0x41 };
Frame frame = Frame.read(newConnectionInputStream(bytes));
assertThat(frame.getType()).isEqualTo(Frame.Type.TEXT);
assertThat(frame.getPayload()).isEqualTo(new byte[] { 0x41, 0x41 });
}
@Test
public void readMaskedTextFrame() throws Exception {
byte[] bytes = new byte[] { (byte) 0x81, (byte) 0x82, 0x0F, 0x0F, 0x0F, 0x0F,
0x4E, 0x4E };
Frame frame = Frame.read(newConnectionInputStream(bytes));
assertThat(frame.getType()).isEqualTo(Frame.Type.TEXT);
assertThat(frame.getPayload()).isEqualTo(new byte[] { 0x41, 0x41 });
}
@Test
public void readLargeTextFrame() throws Exception {
byte[] bytes = new byte[134];
Arrays.fill(bytes, (byte) 0x4E);
bytes[0] = (byte) 0x81;
bytes[1] = (byte) 0xFE;
bytes[2] = 0x00;
bytes[3] = 126;
bytes[4] = 0x0F;
bytes[5] = 0x0F;
bytes[6] = 0x0F;
bytes[7] = 0x0F;
Frame frame = Frame.read(newConnectionInputStream(bytes));
assertThat(frame.getType()).isEqualTo(Frame.Type.TEXT);
assertThat(frame.getPayload()).isEqualTo(createString(126).getBytes());
}
@Test
public void readContinuation() throws Exception {
byte[] bytes = new byte[] { (byte) 0x80, (byte) 0x00 };
Frame frame = Frame.read(newConnectionInputStream(bytes));
assertThat(frame.getType()).isEqualTo(Frame.Type.CONTINUATION);
}
@Test
public void readBinary() throws Exception {
byte[] bytes = new byte[] { (byte) 0x82, (byte) 0x00 };
Frame frame = Frame.read(newConnectionInputStream(bytes));
assertThat(frame.getType()).isEqualTo(Frame.Type.BINARY);
}
@Test
public void readClose() throws Exception {
byte[] bytes = new byte[] { (byte) 0x88, (byte) 0x00 };
Frame frame = Frame.read(newConnectionInputStream(bytes));
assertThat(frame.getType()).isEqualTo(Frame.Type.CLOSE);
}
@Test
public void readPing() throws Exception {
byte[] bytes = new byte[] { (byte) 0x89, (byte) 0x00 };
Frame frame = Frame.read(newConnectionInputStream(bytes));
assertThat(frame.getType()).isEqualTo(Frame.Type.PING);
}
@Test
public void readPong() throws Exception {
byte[] bytes = new byte[] { (byte) 0x8A, (byte) 0x00 };
Frame frame = Frame.read(newConnectionInputStream(bytes));
assertThat(frame.getType()).isEqualTo(Frame.Type.PONG);
}
private ConnectionInputStream newConnectionInputStream(byte[] bytes) {
return new ConnectionInputStream(new ByteArrayInputStream(bytes));
}
private String createString(int length) {
char[] chars = new char[length];
Arrays.fill(chars, 'A');
return new String(chars);
}
}