/*
* Copyright 2002-2016 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.http.converter;
import java.io.IOException;
import java.math.BigInteger;
import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.Locale;
import org.junit.Before;
import org.junit.Test;
import org.springframework.core.convert.ConversionService;
import org.springframework.core.convert.support.DefaultConversionService;
import org.springframework.core.io.Resource;
import org.springframework.http.MediaType;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.http.server.ServletServerHttpResponse;
import org.springframework.mock.web.test.MockHttpServletRequest;
import org.springframework.mock.web.test.MockHttpServletResponse;
import static org.junit.Assert.*;
/**
* Test cases for {@link ObjectToStringHttpMessageConverter} class.
*
* @author <a href="mailto:dmitry.katsubo@gmail.com">Dmitry Katsubo</a>
* @author Rossen Stoyanchev
*/
public class ObjectToStringHttpMessageConverterTests {
private ObjectToStringHttpMessageConverter converter;
private MockHttpServletResponse servletResponse;
private ServletServerHttpResponse response;
@Before
public void setUp() {
ConversionService conversionService = new DefaultConversionService();
this.converter = new ObjectToStringHttpMessageConverter(conversionService);
this.servletResponse = new MockHttpServletResponse();
this.response = new ServletServerHttpResponse(this.servletResponse);
}
@Test
public void canRead() {
assertFalse(this.converter.canRead(Math.class, null));
assertFalse(this.converter.canRead(Resource.class, null));
assertTrue(this.converter.canRead(Locale.class, null));
assertTrue(this.converter.canRead(BigInteger.class, null));
assertFalse(this.converter.canRead(BigInteger.class, MediaType.TEXT_HTML));
assertFalse(this.converter.canRead(BigInteger.class, MediaType.TEXT_XML));
assertFalse(this.converter.canRead(BigInteger.class, MediaType.APPLICATION_XML));
}
@Test
public void canWrite() {
assertFalse(this.converter.canWrite(Math.class, null));
assertFalse(this.converter.canWrite(Resource.class, null));
assertTrue(this.converter.canWrite(Locale.class, null));
assertTrue(this.converter.canWrite(Double.class, null));
assertFalse(this.converter.canWrite(BigInteger.class, MediaType.TEXT_HTML));
assertFalse(this.converter.canWrite(BigInteger.class, MediaType.TEXT_XML));
assertFalse(this.converter.canWrite(BigInteger.class, MediaType.APPLICATION_XML));
assertTrue(this.converter.canWrite(BigInteger.class, MediaType.valueOf("text/*")));
}
@Test
public void defaultCharset() throws IOException {
this.converter.write(Integer.valueOf(5), null, response);
assertEquals("ISO-8859-1", servletResponse.getCharacterEncoding());
}
@Test
public void defaultCharsetModified() throws IOException {
ConversionService cs = new DefaultConversionService();
ObjectToStringHttpMessageConverter converter = new ObjectToStringHttpMessageConverter(cs, StandardCharsets.UTF_16);
converter.write((byte) 31, null, this.response);
assertEquals("UTF-16", this.servletResponse.getCharacterEncoding());
}
@Test
public void writeAcceptCharset() throws IOException {
this.converter.write(new Date(), null, this.response);
assertNotNull(this.servletResponse.getHeader("Accept-Charset"));
}
@Test
public void writeAcceptCharsetTurnedOff() throws IOException {
this.converter.setWriteAcceptCharset(false);
this.converter.write(new Date(), null, this.response);
assertNull(this.servletResponse.getHeader("Accept-Charset"));
}
@Test
public void read() throws IOException {
MockHttpServletRequest request = new MockHttpServletRequest();
request.setContentType(MediaType.TEXT_PLAIN_VALUE);
Short shortValue = Short.valueOf((short) 781);
request.setContent(shortValue.toString().getBytes(
StringHttpMessageConverter.DEFAULT_CHARSET));
assertEquals(shortValue, this.converter.read(Short.class, new ServletServerHttpRequest(request)));
Float floatValue = Float.valueOf(123);
request.setCharacterEncoding("UTF-16");
request.setContent(floatValue.toString().getBytes("UTF-16"));
assertEquals(floatValue, this.converter.read(Float.class, new ServletServerHttpRequest(request)));
Long longValue = Long.valueOf(55819182821331L);
request.setCharacterEncoding("UTF-8");
request.setContent(longValue.toString().getBytes("UTF-8"));
assertEquals(longValue, this.converter.read(Long.class, new ServletServerHttpRequest(request)));
}
@Test
public void write() throws IOException {
this.converter.write((byte) -8, null, this.response);
assertEquals("ISO-8859-1", this.servletResponse.getCharacterEncoding());
assertTrue(this.servletResponse.getContentType().startsWith(MediaType.TEXT_PLAIN_VALUE));
assertEquals(2, this.servletResponse.getContentLength());
assertArrayEquals(new byte[] { '-', '8' }, this.servletResponse.getContentAsByteArray());
}
@Test
public void writeUtf16() throws IOException {
MediaType contentType = new MediaType("text", "plain", StandardCharsets.UTF_16);
this.converter.write(Integer.valueOf(958), contentType, this.response);
assertEquals("UTF-16", this.servletResponse.getCharacterEncoding());
assertTrue(this.servletResponse.getContentType().startsWith(MediaType.TEXT_PLAIN_VALUE));
assertEquals(8, this.servletResponse.getContentLength());
// First two bytes: byte order mark
assertArrayEquals(new byte[] { -2, -1, 0, '9', 0, '5', 0, '8' }, this.servletResponse.getContentAsByteArray());
}
@Test(expected = IllegalArgumentException.class)
public void testConversionServiceRequired() {
new ObjectToStringHttpMessageConverter(null);
}
}