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Add Kotlin based ScriptTemplateView rendering test

Kotlin JSR 223 support currently requires kotlin-script-util
dependency (jcabi-aether, maven-core and aether-api can be
excluded since they are only used for live import of
dependencies and bring a lot of JARs in the classpath) and a
/META-INF/services/javax.script.ScriptEngineFactory
file specifying the ScriptEngineFactory to use, in that case
org.jetbrains.kotlin.script.jsr223.KotlinJsr223JvmLocalScriptEngineFactory.

Issue: SPR-15059
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sdeleuze committed Jan 1, 2017
1 parent ef43400 commit badde3a479a53e1dd0777dd1bd5b55cb1021cf9e
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@@ -969,6 +969,15 @@ project("spring-webmvc") {
testCompile("org.mozilla:rhino:1.7.7.1")
testRuntime("org.jruby:jruby:9.1.6.0")
testRuntime("org.python:jython-standalone:2.5.3")
// Ideally, kotlin-script-runtime should be enough for JSR-223, but that's not
// the case yet, so we depend on kotlin-script-util and exclude these
// dependencies only used for artifact retrieval. Point raised to Kotlin team.
testRuntime("org.jetbrains.kotlin:kotlin-compiler:${kotlinVersion}")
testRuntime("org.jetbrains.kotlin:kotlin-script-util:${kotlinVersion}") {
exclude group: "com.jcabi", module: "jcabi-aether"
exclude group: "org.apache.maven", module: "maven-core"
exclude group: "org.sonatype.aether", module: "aether-api"
}
testRuntime("org.webjars:underscorejs:1.8.3")
testRuntime("org.glassfish:javax.el:3.0.1-b08")
testRuntime("com.sun.xml.bind:jaxb-core:${jaxbVersion}")
@@ -0,0 +1,100 @@
/*
* Copyright 2002-2015 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.servlet.view.script;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletContext;
import static org.junit.Assert.assertEquals;
import org.junit.Before;
import org.junit.Test;
import static org.mockito.Mockito.mock;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.mock.web.test.MockHttpServletRequest;
import org.springframework.mock.web.test.MockHttpServletResponse;
import org.springframework.mock.web.test.MockServletContext;
import org.springframework.web.context.WebApplicationContext;
/**
* Unit tests for Kotlin script templates running on Kotlin JSR 223 support
*
* @author Sebastien Deleuze
*/
public class KotlinScriptTemplateTests {
private WebApplicationContext webAppContext;
private ServletContext servletContext;
@Before
public void setup() {
this.webAppContext = mock(WebApplicationContext.class);
this.servletContext = new MockServletContext();
this.servletContext.setAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE, this.webAppContext);
}
@Test
public void renderTemplate() throws Exception {
Map<String, Object> model = new HashMap<>();
model.put("title", "Layout example");
model.put("body", "This is the body");
MockHttpServletResponse response = renderViewWithModel("org/springframework/web/servlet/view/script/kotlin/template.kts",
model, ScriptTemplatingConfiguration.class);
assertEquals("<html><head><title>Layout example</title></head><body><p>This is the body</p></body></html>",
response.getContentAsString());
}
private MockHttpServletResponse renderViewWithModel(String viewUrl, Map<String, Object> model, Class<?> configuration) throws Exception {
ScriptTemplateView view = createViewWithUrl(viewUrl, configuration);
MockHttpServletResponse response = new MockHttpServletResponse();
MockHttpServletRequest request = new MockHttpServletRequest();
view.renderMergedOutputModel(model, request, response);
return response;
}
private ScriptTemplateView createViewWithUrl(String viewUrl, Class<?> configuration) throws Exception {
AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
ctx.register(configuration);
ctx.refresh();
ScriptTemplateView view = new ScriptTemplateView();
view.setApplicationContext(ctx);
view.setUrl(viewUrl);
view.afterPropertiesSet();
return view;
}
@Configuration
static class ScriptTemplatingConfiguration {
@Bean
public ScriptTemplateConfigurer kotlinScriptConfigurer() {
ScriptTemplateConfigurer configurer = new ScriptTemplateConfigurer();
configurer.setEngineName("kotlin");
configurer.setScripts("org/springframework/web/servlet/view/script/kotlin/render.kts");
configurer.setRenderFunction("render");
return configurer;
}
}
}
@@ -0,0 +1 @@
org.jetbrains.kotlin.script.jsr223.KotlinJsr223JvmLocalScriptEngineFactory
@@ -0,0 +1,10 @@
import javax.script.*
// TODO Use engine.eval(String, Bindings) when https://youtrack.jetbrains.com/issue/KT-15450 will be fixed
fun render(template: String, model: Map<String, Any>, url: String): String {
val engine = ScriptEngineManager().getEngineByName("kotlin")
val bindings = SimpleBindings()
bindings.putAll(model)
engine.setBindings(bindings, ScriptContext.ENGINE_SCOPE)
return engine.eval(template) as String
}
@@ -0,0 +1 @@
"""<html><head><title>${bindings["title"]}</title></head><body><p>${bindings["body"]}</p></body></html>"""

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