Add MockMvcClientHttpRequestFactory

Issue: SPR-9917

spring-test-mvc/src/main/java/org/springframework/test/web/client/MockMvcClientHttpRequestFactory.java

@@ -0,0 +1,93 @@
+/*
+ * 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.test.web.client;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.request;
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.List;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.client.ClientHttpRequest;
+import org.springframework.http.client.ClientHttpRequestFactory;
+import org.springframework.http.client.ClientHttpResponse;
+import org.springframework.mock.http.client.MockClientHttpRequest;
+import org.springframework.mock.http.client.MockClientHttpResponse;
+import org.springframework.mock.web.MockHttpServletResponse;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.MvcResult;
+import org.springframework.test.web.servlet.request.MockHttpServletRequestBuilder;
+
+/**
+ * A {@link ClientHttpRequestFactory} for requests executed via {@link MockMvc}.
+ *
+ * @author Rossen Stoyanchev
+ * @since 3.2
+ */
+public class MockMvcClientHttpRequestFactory implements ClientHttpRequestFactory {
+
+	private final MockMvc mockMvc;
+
+
+	public MockMvcClientHttpRequestFactory(MockMvc mockMvc) {
+		this.mockMvc = mockMvc;
+	}
+
+	public ClientHttpRequest createRequest(final URI uri, final HttpMethod httpMethod) throws IOException {
+		return new MockClientHttpRequest(httpMethod, uri) {
+
+			@Override
+			public ClientHttpResponse executeInternal() throws IOException {
+				try {
+					MockHttpServletRequestBuilder requestBuilder = request(httpMethod, uri.toString());
+					requestBuilder.content(getBodyAsBytes());
+					requestBuilder.headers(getHeaders());
+
+					MvcResult mvcResult = MockMvcClientHttpRequestFactory.this.mockMvc.perform(requestBuilder).andReturn();
+
+					MockHttpServletResponse servletResponse = mvcResult.getResponse();
+					HttpStatus status = HttpStatus.valueOf(servletResponse.getStatus());
+					byte[] body = servletResponse.getContentAsByteArray();
+					HttpHeaders headers = getResponseHeaders(servletResponse);
+
+					MockClientHttpResponse clientResponse = new MockClientHttpResponse(body, status);
+					clientResponse.getHeaders().putAll(headers);
+
+					return clientResponse;
+				}
+				catch (Exception ex) {
+					byte[] body = ex.toString().getBytes("UTF-8");
+					return new MockClientHttpResponse(body, HttpStatus.INTERNAL_SERVER_ERROR);
+				}
+			}
+		};
+	}
+
+	private HttpHeaders getResponseHeaders(MockHttpServletResponse response) {
+		HttpHeaders headers = new HttpHeaders();
+		for (String name : response.getHeaderNames()) {
+			List<String> values = response.getHeaders(name);
+			for (String value : values) {
+				headers.add(name, value);
+			}
+		}
+		return headers;
+	}
+
+}

spring-test-mvc/src/main/java/org/springframework/test/web/client/RequestMatcherClientHttpRequest.java

@@ -56,7 +56,7 @@ class RequestMatcherClientHttpRequest extends MockClientHttpRequest implements R
 		this.responseCreator = responseCreator;
 	}
 
-	public ClientHttpResponse execute() throws IOException {
+	public ClientHttpResponse executeInternal() throws IOException {
 
 		if (this.requestMatchers.isEmpty()) {
 			throw new AssertionError("No request expectations to execute");

spring-test-mvc/src/main/java/org/springframework/test/web/servlet/request/MockMvcRequestBuilders.java

@@ -80,6 +80,17 @@ public abstract class MockMvcRequestBuilders {
 		return new MockHttpServletRequestBuilder(HttpMethod.DELETE, urlTemplate, urlVariables);
 	}
 
+	/**
+	 * Create a {@link MockHttpServletRequestBuilder} for a request with the given HTTP method.
+	 *
+	 * @param httpMethod the HTTP method
+	 * @param urlTemplate a URL template; the resulting URL will be encoded
+	 * @param urlVariables zero or more URL variables
+	 */
+	public static MockHttpServletRequestBuilder request(HttpMethod httpMethod, String urlTemplate, Object... urlVars) {
+		return new MockHttpServletRequestBuilder(httpMethod, urlTemplate, urlVars);
+	}
+
 	/**
 	 * Create a {@link MockHttpServletRequestBuilder} for a multipart request.
 	 *

spring-test-mvc/src/test/java/org/springframework/test/web/client/samples/MockMvcClientHttpRequestFactoryTests.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright 2011 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.test.web.client.samples;
+
+import static org.junit.Assert.*;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.stereotype.Controller;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.test.web.client.MockMvcClientHttpRequestFactory;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.client.RestTemplate;
+import org.springframework.web.context.WebApplicationContext;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+
+/**
+ * Tests dependent on access to resources under the web application root directory.
+ *
+ * @author Rossen Stoyanchev
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@WebAppConfiguration
+@ContextConfiguration
+public class MockMvcClientHttpRequestFactoryTests {
+
+	@Autowired
+	private WebApplicationContext wac;
+
+	private RestTemplate restTemplate;
+
+
+	@Before
+	public void setup() {
+		MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).alwaysExpect(status().isOk()).build();
+		this.restTemplate = new RestTemplate(new MockMvcClientHttpRequestFactory(mockMvc));
+	}
+
+	@Test
+	public void test() throws Exception {
+		String result = this.restTemplate.getForObject("/foo", String.class);
+		assertEquals("bar", result);
+	}
+
+
+	@EnableWebMvc
+	@Configuration
+	@ComponentScan(basePackageClasses=MockMvcClientHttpRequestFactoryTests.class)
+	static class MyWebConfig extends WebMvcConfigurerAdapter {
+	}
+
+	@Controller
+	static class MyController {
+
+		@RequestMapping(value="/foo", method=RequestMethod.GET)
+		@ResponseBody
+		public String handle() {
+			return "bar";
+		}
+	}
+
+}

spring-test/src/main/java/org/springframework/mock/http/client/MockClientHttpRequest.java

@@ -75,18 +75,18 @@ public class MockClientHttpRequest extends MockHttpOutputMessage implements Clie
 	}
 
 	/**
-	 * Whether the execute method was invoked.
+	 * Sets the {@link #isExecuted() executed} flag to true and returns the
+	 * configured {@link #setResponse(ClientHttpResponse) response}.
 	 */
-	public boolean isExecuted() {
-		return this.executed;
+	public final ClientHttpResponse execute() throws IOException {
+		this.executed = true;
+		return executeInternal();
 	}
 
 	/**
-	 * Sets the {@link #isExecuted() executed} flag to true and returns the
-	 * configured {@link #setResponse(ClientHttpResponse) response}.
+	 * Override this method to execute the request and provdie a response.
 	 */
-	public ClientHttpResponse execute() throws IOException {
-		this.executed = true;
+	protected ClientHttpResponse executeInternal() throws IOException {
 		return this.clientHttpResponse;
 	}