/*
* Copyright 2002-2017 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.freemarker;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.time.Duration;
import java.util.Locale;
import freemarker.template.Configuration;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import reactor.test.StepVerifier;
import org.springframework.context.ApplicationContextException;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.mock.http.server.reactive.test.MockServerHttpRequest;
import org.springframework.mock.http.server.reactive.test.MockServerWebExchange;
import org.springframework.ui.ExtendedModelMap;
import org.springframework.ui.ModelMap;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author Rossen Stoyanchev
*/
public class FreeMarkerViewTests {
private static final String TEMPLATE_PATH = "classpath*:org/springframework/web/reactive/view/freemarker/";
private final MockServerWebExchange exchange = MockServerHttpRequest.get("/path").toExchange();
private GenericApplicationContext context;
private Configuration freeMarkerConfig;
@Rule
public final ExpectedException exception = ExpectedException.none();
@Before
public void setup() throws Exception {
this.context = new GenericApplicationContext();
this.context.refresh();
FreeMarkerConfigurer configurer = new FreeMarkerConfigurer();
configurer.setPreferFileSystemAccess(false);
configurer.setTemplateLoaderPath(TEMPLATE_PATH);
configurer.setResourceLoader(this.context);
this.freeMarkerConfig = configurer.createConfiguration();
}
@Test
public void noFreeMarkerConfig() throws Exception {
this.exception.expect(ApplicationContextException.class);
this.exception.expectMessage("Must define a single FreeMarkerConfig bean");
FreeMarkerView view = new FreeMarkerView();
view.setApplicationContext(this.context);
view.setUrl("anythingButNull");
view.afterPropertiesSet();
}
@Test
public void noTemplateName() throws Exception {
this.exception.expect(IllegalArgumentException.class);
this.exception.expectMessage("Property 'url' is required");
FreeMarkerView freeMarkerView = new FreeMarkerView();
freeMarkerView.afterPropertiesSet();
}
@Test
public void checkResourceExists() throws Exception {
FreeMarkerView view = new FreeMarkerView();
view.setConfiguration(this.freeMarkerConfig);
view.setUrl("test.ftl");
assertTrue(view.checkResourceExists(Locale.US));
}
@Test
public void render() throws Exception {
FreeMarkerView view = new FreeMarkerView();
view.setConfiguration(this.freeMarkerConfig);
view.setUrl("test.ftl");
ModelMap model = new ExtendedModelMap();
model.addAttribute("hello", "hi FreeMarker");
view.render(model, null, this.exchange).block(Duration.ofMillis(5000));
StepVerifier.create(this.exchange.getResponse().getBody())
.consumeNextWith(buf -> assertEquals("<html><body>hi FreeMarker</body></html>", asString(buf)))
.expectComplete()
.verify();
}
private static String asString(DataBuffer dataBuffer) {
ByteBuffer byteBuffer = dataBuffer.asByteBuffer();
final byte[] bytes = new byte[byteBuffer.remaining()];
byteBuffer.get(bytes);
return new String(bytes, StandardCharsets.UTF_8);
}
@SuppressWarnings("unused")
private String handle() {
return null;
}
}