/*
* Copyright 2002-2012 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.client;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpRequest;
import org.springframework.http.HttpStatus;
import org.springframework.http.client.support.HttpRequestWrapper;
import static org.junit.Assert.*;
/** @author Arjen Poutsma */
public class InterceptingClientHttpRequestFactoryTests {
private InterceptingClientHttpRequestFactory requestFactory;
private RequestFactoryMock requestFactoryMock;
private RequestMock requestMock;
private ResponseMock responseMock;
@Before
public void setUp() throws Exception {
requestFactoryMock = new RequestFactoryMock();
requestMock = new RequestMock();
responseMock = new ResponseMock();
}
@Test
public void basic() throws Exception {
List<ClientHttpRequestInterceptor> interceptors = new ArrayList<ClientHttpRequestInterceptor>();
interceptors.add(new NoOpInterceptor());
interceptors.add(new NoOpInterceptor());
interceptors.add(new NoOpInterceptor());
requestFactory = new InterceptingClientHttpRequestFactory(requestFactoryMock, interceptors);
ClientHttpRequest request = requestFactory.createRequest(new URI("http://example.com"), HttpMethod.GET);
ClientHttpResponse response = request.execute();
assertTrue(((NoOpInterceptor) interceptors.get(0)).invoked);
assertTrue(((NoOpInterceptor) interceptors.get(1)).invoked);
assertTrue(((NoOpInterceptor) interceptors.get(2)).invoked);
assertTrue(requestMock.executed);
assertSame(responseMock, response);
}
@Test
public void noExecution() throws Exception {
List<ClientHttpRequestInterceptor> interceptors = new ArrayList<ClientHttpRequestInterceptor>();
interceptors.add(new ClientHttpRequestInterceptor() {
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)
throws IOException {
return responseMock;
}
});
interceptors.add(new NoOpInterceptor());
requestFactory = new InterceptingClientHttpRequestFactory(requestFactoryMock, interceptors);
ClientHttpRequest request = requestFactory.createRequest(new URI("http://example.com"), HttpMethod.GET);
ClientHttpResponse response = request.execute();
assertFalse(((NoOpInterceptor) interceptors.get(1)).invoked);
assertFalse(requestMock.executed);
assertSame(responseMock, response);
}
@Test
public void changeHeaders() throws Exception {
final String headerName = "Foo";
final String headerValue = "Bar";
ClientHttpRequestInterceptor interceptor = new ClientHttpRequestInterceptor() {
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)
throws IOException {
return execution.execute(new HttpRequestWrapper(request) {
@Override
public HttpHeaders getHeaders() {
HttpHeaders headers = new HttpHeaders();
headers.set(headerName, headerValue);
return headers;
}
}, body);
}
};
requestMock = new RequestMock() {
@Override
public ClientHttpResponse execute() throws IOException {
assertEquals(headerValue, getHeaders().getFirst(headerName));
return super.execute();
}
};
requestFactory =
new InterceptingClientHttpRequestFactory(requestFactoryMock, Collections.singletonList(interceptor));
ClientHttpRequest request = requestFactory.createRequest(new URI("http://example.com"), HttpMethod.GET);
request.execute();
}
@Test
public void changeURI() throws Exception {
final URI changedUri = new URI("http://example.com/2");
ClientHttpRequestInterceptor interceptor = new ClientHttpRequestInterceptor() {
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)
throws IOException {
return execution.execute(new HttpRequestWrapper(request) {
@Override
public URI getURI() {
return changedUri;
}
}, body);
}
};
requestFactoryMock = new RequestFactoryMock() {
@Override
public ClientHttpRequest createRequest(URI uri, HttpMethod httpMethod) throws IOException {
assertEquals(changedUri, uri);
return super.createRequest(uri, httpMethod);
}
};
requestFactory =
new InterceptingClientHttpRequestFactory(requestFactoryMock, Collections.singletonList(interceptor));
ClientHttpRequest request = requestFactory.createRequest(new URI("http://example.com"), HttpMethod.GET);
request.execute();
}
@Test
public void changeMethod() throws Exception {
final HttpMethod changedMethod = HttpMethod.POST;
ClientHttpRequestInterceptor interceptor = new ClientHttpRequestInterceptor() {
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)
throws IOException {
return execution.execute(new HttpRequestWrapper(request) {
@Override
public HttpMethod getMethod() {
return changedMethod;
}
}, body);
}
};
requestFactoryMock = new RequestFactoryMock() {
@Override
public ClientHttpRequest createRequest(URI uri, HttpMethod httpMethod) throws IOException {
assertEquals(changedMethod, httpMethod);
return super.createRequest(uri, httpMethod);
}
};
requestFactory =
new InterceptingClientHttpRequestFactory(requestFactoryMock, Collections.singletonList(interceptor));
ClientHttpRequest request = requestFactory.createRequest(new URI("http://example.com"), HttpMethod.GET);
request.execute();
}
@Test
public void changeBody() throws Exception {
final byte[] changedBody = "Foo".getBytes();
ClientHttpRequestInterceptor interceptor = new ClientHttpRequestInterceptor() {
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)
throws IOException {
return execution.execute(request, changedBody);
}
};
requestFactory =
new InterceptingClientHttpRequestFactory(requestFactoryMock, Collections.singletonList(interceptor));
ClientHttpRequest request = requestFactory.createRequest(new URI("http://example.com"), HttpMethod.GET);
request.execute();
assertTrue(Arrays.equals(changedBody, requestMock.body.toByteArray()));
}
private static class NoOpInterceptor implements ClientHttpRequestInterceptor {
private boolean invoked = false;
@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)
throws IOException {
invoked = true;
return execution.execute(request, body);
}
}
private class RequestFactoryMock implements ClientHttpRequestFactory {
@Override
public ClientHttpRequest createRequest(URI uri, HttpMethod httpMethod) throws IOException {
requestMock.setURI(uri);
requestMock.setMethod(httpMethod);
return requestMock;
}
}
private class RequestMock implements ClientHttpRequest {
private URI uri;
private HttpMethod method;
private HttpHeaders headers = new HttpHeaders();
private ByteArrayOutputStream body = new ByteArrayOutputStream();
private boolean executed = false;
private RequestMock() {
}
@Override
public URI getURI() {
return uri;
}
public void setURI(URI uri) {
this.uri = uri;
}
@Override
public HttpMethod getMethod() {
return method;
}
public void setMethod(HttpMethod method) {
this.method = method;
}
@Override
public HttpHeaders getHeaders() {
return headers;
}
@Override
public OutputStream getBody() throws IOException {
return body;
}
@Override
public ClientHttpResponse execute() throws IOException {
executed = true;
return responseMock;
}
}
private static class ResponseMock implements ClientHttpResponse {
private HttpStatus statusCode = HttpStatus.OK;
private String statusText = "";
private HttpHeaders headers = new HttpHeaders();
@Override
public HttpStatus getStatusCode() throws IOException {
return statusCode;
}
@Override
public int getRawStatusCode() throws IOException {
return statusCode.value();
}
@Override
public String getStatusText() throws IOException {
return statusText;
}
@Override
public HttpHeaders getHeaders() {
return headers;
}
@Override
public InputStream getBody() throws IOException {
return null;
}
@Override
public void close() {
}
}
}