/*
* 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.web.reactive.result.view;
import java.net.URI;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import reactor.core.test.TestSubscriber;
import org.springframework.core.MethodParameter;
import org.springframework.core.codec.StringEncoder;
import org.springframework.core.io.buffer.support.DataBufferTestUtils;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.codec.json.JacksonJsonEncoder;
import org.springframework.http.codec.xml.Jaxb2Encoder;
import org.springframework.http.server.reactive.MockServerHttpRequest;
import org.springframework.http.server.reactive.MockServerHttpResponse;
import org.springframework.ui.ExtendedModelMap;
import org.springframework.ui.ModelMap;
import org.springframework.util.MimeType;
import org.springframework.web.reactive.HandlerResult;
import org.springframework.web.reactive.result.ResolvableMethod;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.server.adapter.DefaultServerWebExchange;
import org.springframework.web.server.session.DefaultWebSessionManager;
import org.springframework.web.server.session.WebSessionManager;
import static junit.framework.TestCase.assertTrue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
/**
* Unit tests for {@link HttpMessageConverterView}.
* @author Rossen Stoyanchev
*/
public class HttpMessageConverterViewTests {
private HttpMessageConverterView view = new HttpMessageConverterView(new JacksonJsonEncoder());
private HandlerResult result;
private ModelMap model = new ExtendedModelMap();
@Before
public void setup() throws Exception {
MethodParameter param = ResolvableMethod.onClass(this.getClass()).name("handle").resolveReturnType();
this.result = new HandlerResult(this, null, param, this.model);
}
@Test
public void supportedMediaTypes() throws Exception {
List<MimeType> mimeTypes = Arrays.asList(
new MimeType("application", "json", StandardCharsets.UTF_8),
new MimeType("application", "*+json", StandardCharsets.UTF_8));
assertEquals(mimeTypes, this.view.getSupportedMediaTypes());
}
@Test
public void extractObject() throws Exception {
this.view.setModelKeys(Collections.singleton("foo2"));
this.model.addAttribute("foo1", "bar1");
this.model.addAttribute("foo2", "bar2");
this.model.addAttribute("foo3", "bar3");
assertEquals("bar2", this.view.extractObjectToRender(this.result));
}
@Test
public void extractObjectNoMatch() throws Exception {
this.view.setModelKeys(Collections.singleton("foo2"));
this.model.addAttribute("foo1", "bar1");
assertNull(this.view.extractObjectToRender(this.result));
}
@Test
public void extractObjectMultipleMatches() throws Exception {
this.view.setModelKeys(new HashSet<>(Arrays.asList("foo1", "foo2")));
this.model.addAttribute("foo1", "bar1");
this.model.addAttribute("foo2", "bar2");
this.model.addAttribute("foo3", "bar3");
Object value = this.view.extractObjectToRender(this.result);
assertNotNull(value);
assertEquals(HashMap.class, value.getClass());
Map<?, ?> map = (Map<?, ?>) value;
assertEquals(2, map.size());
assertEquals("bar1", map.get("foo1"));
assertEquals("bar2", map.get("foo2"));
}
@Test
public void extractObjectMultipleMatchesNotSupported() throws Exception {
HttpMessageConverterView view = new HttpMessageConverterView(new StringEncoder());
view.setModelKeys(new HashSet<>(Arrays.asList("foo1", "foo2")));
this.model.addAttribute("foo1", "bar1");
this.model.addAttribute("foo2", "bar2");
try {
view.extractObjectToRender(this.result);
fail();
}
catch (IllegalStateException ex) {
String message = ex.getMessage();
assertTrue(message, message.contains("Map rendering is not supported"));
}
}
@Test
public void extractObjectNotSupported() throws Exception {
HttpMessageConverterView view = new HttpMessageConverterView(new Jaxb2Encoder());
view.setModelKeys(new HashSet<>(Collections.singletonList("foo1")));
this.model.addAttribute("foo1", "bar1");
try {
view.extractObjectToRender(this.result);
fail();
}
catch (IllegalStateException ex) {
String message = ex.getMessage();
assertTrue(message, message.contains("[foo1] is not supported"));
}
}
@Test
public void render() throws Exception {
Map<String, String> pojoData = new LinkedHashMap<>();
pojoData.put("foo", "f");
pojoData.put("bar", "b");
this.model.addAttribute("pojoData", pojoData);
this.view.setModelKeys(Collections.singleton("pojoData"));
MockServerHttpRequest request = new MockServerHttpRequest(HttpMethod.GET, new URI("/path"));
MockServerHttpResponse response = new MockServerHttpResponse();
WebSessionManager manager = new DefaultWebSessionManager();
ServerWebExchange exchange = new DefaultServerWebExchange(request, response, manager);
this.view.render(result, MediaType.APPLICATION_JSON, exchange);
TestSubscriber
.subscribe(response.getBody())
.assertValuesWith(buf -> assertEquals("{\"foo\":\"f\",\"bar\":\"b\"}",
DataBufferTestUtils.dumpString(buf, Charset.forName("UTF-8"))));
}
@SuppressWarnings("unused")
private String handle() {
return null;
}
}