Spring-Jersey如何进行内存单元测试

Question

我正在使用Spring-Jersey3，无法弄清楚如何使用Spring Bean对RESTFul API进行单元测试

Controller

package com.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.service.DataSource;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("test")
@Component
public class SpringController {
    @Autowired
    private DataSource datasource;

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String getHello() {
        return new String(datasource.load());
    }
}

Service Interface

package com.service;

public interface DataSource {
    public String load();
}

Service Implementation

package com.service;

import org.springframework.stereotype.Repository;

@Repository
public class DataSourceImpl implements DataSource {

    @Override
    public String load() {
        return "Hello";
    }
}

ResourceRegister.java (Jersey resource register)

package com.component;

import org.glassfish.jersey.server.ResourceConfig;
import com.controller.SpringController;

public class ResourceRegister extends ResourceConfig {

    public ResourceRegister () {
        register(SpringController.class);
    }
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">

<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath:applicationContext.xml</param-value>
</context-param>

<servlet>
  <servlet-name>Jersey</servlet-name>
  <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
  <param-name>javax.ws.rs.Application</param-name>
  <param-value>com.component.ResourceRegister</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
  <servlet-name>Jersey</servlet-name>
  <url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>

serviceContext.xml（Application Context）

<?xml version="1.0" encoding="UTF-8"?>

<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">

<context:component-scan base-package="com.service" />
<context:component-scan base-package="com.controller" />

</beans>

单元测试<<-我真的不知道如何测试

public class test extends JerseyTest {
    public test() {
        super("com.service", "com.controller");
    }

    @Override
    protected AppDescriptor configure() {
        return new WebAppDescriptor.Builder("com.service","com.controller")
               .contextParam("contextConfigLocation", "classpath:serviceContext.xml")
               .contextPath("/rest")
               .servletClass("org.glassfish.jersey.servlet.ServletContainer.class")
               .initParam("javax.ws.rs.Application", "com.component.ResourceRegister")
               .build();
    }

    @Test
    public void test() {
        Client client = new Client();
        WebResource resource = client.resource("test");

        ClientResponse response = resource.post(ClientResponse.class);

        assertEquals(200, resposne.getStatus());
    }
}

Answer 1

我会修复的几件事：

• 你正在使用Jersey 1.x风味的Jersey测试框架，但你的应用程序是Jersey2.x。请参阅下面的2.x依赖性。

• 我从未使用过Jersey 1.x风格的测试框架，但对于Jersey 2.x，内存中容器不支持servlet依赖功能。有关不同的依赖性，请参见下文。

• 使用Jersey测试框架，你无需创建Client自己。创建了一个，我们可以简单地调用JerseyTest的target(String path)方法来取回WebTarget（Jersey 2.x，WebResource是Jersey 1.x）。

这是一个有效的重构。

依赖关系（我仅添加了此依赖关系，并且没有删除任何东西，因为你的GitHub项目没有包含与测试相关的任何东西，如你上面的代码示例所述）

<dependency>
    <groupId>org.glassfish.jersey.test-framework.providers</groupId>
    <artifactId>jersey-test-framework-provider-grizzly2</artifactId>
    <version>2.15</version>
</dependency>

测试

import com.component.ResourceRegister;
import org.glassfish.jersey.servlet.ServletContainer;
import org.glassfish.jersey.test.DeploymentContext;
import org.glassfish.jersey.test.JerseyTest;
import org.glassfish.jersey.test.ServletDeploymentContext;
import org.glassfish.jersey.test.grizzly.GrizzlyWebTestContainerFactory;
import org.glassfish.jersey.test.spi.TestContainerFactory;
import org.junit.Assert;
import org.junit.Test;
import org.springframework.web.context.ContextLoaderListener;

public class SpringTest extends JerseyTest {

    @Override
    protected TestContainerFactory getTestContainerFactory() {
        return new GrizzlyWebTestContainerFactory();
    }

    @Override
    protected DeploymentContext configureDeployment(){
        return ServletDeploymentContext
                .forServlet(new ServletContainer(new ResourceRegister()))
                .addListener(ContextLoaderListener.class)
                .contextParam("contextConfigLocation", "classpath:applicationContext.xml")
                .build();
    }

    @Test
    public void test() {
        String response = target("test").request().get(String.class);
        Assert.assertEquals("Hello", response);
        System.out.println(response);
    }  
}

对于那些不使用xml上下文文件的用户，可以使用注释配置应用程序上下文，并将其添加为init参数。

return ServletDeploymentContext
        .forServlet(new ServletContainer(new ResourceRegister()))
        .addListener(ContextLoaderListener.class)
        .initParam("contextConfig", new AnnotationConfigApplicationContext(YourSpringConfig.class))
        .build();