Add ContentNegotiationManagerFactoryBean

The new FactoryBean facilitates the creation of a
ContentNegotiationManager in XML configuration.

Issue: SPR-8420

spring-web/src/test/java/org/springframework/web/accept/ContentNegotiationManagerFactoryBeanTests.java

@@ -0,0 +1,125 @@
+/*
+ * 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.web.accept;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Properties;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.springframework.http.MediaType;
+import org.springframework.mock.web.MockHttpServletRequest;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.context.request.ServletWebRequest;
+
+/**
+ * Test fixture for {@link ContentNegotiationManagerFactoryBean} tests.
+ * @author Rossen Stoyanchev
+ */
+public class ContentNegotiationManagerFactoryBeanTests {
+
+	private ContentNegotiationManagerFactoryBean factoryBean;
+
+	private NativeWebRequest webRequest;
+
+	private MockHttpServletRequest servletRequest;
+
+	@Before
+	public void setup() {
+		this.factoryBean = new ContentNegotiationManagerFactoryBean();
+		this.servletRequest = new MockHttpServletRequest();
+		this.webRequest = new ServletWebRequest(this.servletRequest);
+	}
+
+	@Test
+	public void defaultSettings() throws Exception {
+		this.factoryBean.afterPropertiesSet();
+		ContentNegotiationManager manager = this.factoryBean.getObject();
+
+		this.servletRequest.setRequestURI("/flower.gif");
+
+		assertEquals("Should be able to resolve file extensions by default",
+				Arrays.asList(MediaType.IMAGE_GIF), manager.resolveMediaTypes(this.webRequest));
+
+		this.servletRequest.setRequestURI("/flower?format=gif");
+		this.servletRequest.addParameter("format", "gif");
+
+		assertEquals("Should not resolve request parameters by default",
+				Collections.emptyList(), manager.resolveMediaTypes(this.webRequest));
+
+		this.servletRequest.setRequestURI("/flower");
+		this.servletRequest.addHeader("Accept", MediaType.IMAGE_GIF_VALUE);
+
+		assertEquals("Should resolve Accept header by default",
+				Arrays.asList(MediaType.IMAGE_GIF), manager.resolveMediaTypes(this.webRequest));
+	}
+
+	@Test
+	public void addMediaTypes() throws Exception {
+		Properties mediaTypes = new Properties();
+		mediaTypes.put("json", MediaType.APPLICATION_JSON_VALUE);
+		this.factoryBean.setMediaTypes(mediaTypes);
+
+		this.factoryBean.afterPropertiesSet();
+		ContentNegotiationManager manager = this.factoryBean.getObject();
+
+		this.servletRequest.setRequestURI("/flower.json");
+		assertEquals(Arrays.asList(MediaType.APPLICATION_JSON), manager.resolveMediaTypes(this.webRequest));
+	}
+
+	@Test
+	public void favorParameter() throws Exception {
+		this.factoryBean.setFavorParameter(true);
+		this.factoryBean.setParameterName("f");
+
+		Properties mediaTypes = new Properties();
+		mediaTypes.put("json", MediaType.APPLICATION_JSON_VALUE);
+		this.factoryBean.setMediaTypes(mediaTypes);
+
+		this.factoryBean.afterPropertiesSet();
+		ContentNegotiationManager manager = this.factoryBean.getObject();
+
+		this.servletRequest.setRequestURI("/flower");
+		this.servletRequest.addParameter("f", "json");
+
+		assertEquals(Arrays.asList(MediaType.APPLICATION_JSON), manager.resolveMediaTypes(this.webRequest));
+	}
+
+	@Test
+	public void ignoreAcceptHeader() throws Exception {
+		this.factoryBean.setIgnoreAcceptHeader(true);
+		this.factoryBean.afterPropertiesSet();
+		ContentNegotiationManager manager = this.factoryBean.getObject();
+
+		this.servletRequest.setRequestURI("/flower");
+		this.servletRequest.addHeader("Accept", MediaType.IMAGE_GIF_VALUE);
+
+		assertEquals(Collections.emptyList(), manager.resolveMediaTypes(this.webRequest));
+	}
+
+	@Test
+	public void setDefaultContentType() throws Exception {
+		this.factoryBean.setDefaultContentType(MediaType.APPLICATION_JSON);
+		this.factoryBean.afterPropertiesSet();
+		ContentNegotiationManager manager = this.factoryBean.getObject();
+
+		assertEquals(Arrays.asList(MediaType.APPLICATION_JSON), manager.resolveMediaTypes(this.webRequest));
+	}
+
+}