[spring] spring advanced topic - testing spring project

Familiar with memory 2021-01-21 10:40:09
spring spring advanced topic testing


Reprint please indicate the source :http://blog.csdn.net/qq_26525215 This article comes from College trip _ The blog of memory

Do the demonstration of this example , It needs to be configured first Maven and Spring Oh 、 see : 【Spring】 be based on IntelliJ IDEA build Maven

analysis

Testing is an integral part of development .

Unit testing only tests the classes and methods currently developed , It can be done simply by simulating dependencies , No dependence on the running environment ;

But unit testing alone is not enough , It can only verify that the current class or method works properly , And we want to know if the parts of the system work together , That's what integration testing is all about !

Integration testing generally requires the interaction of different objects from different layers , Such as a database 、 network connections 、Ioc Container, etc .

In fact, we often run programs , And then through their own operations to complete a process similar to integration testing . Integration testing provides us with the ability to verify whether all parts of the system can work together without deploying or running programs .

Spring adopt Spring TestContext Framework Top level support for integration testing .

It doesn't depend on a specific testing framework , You can use Junit, You can also use TestNG. In the following example , It uses Junit.

be based on Maven The default directory of the built project structure is :src/test/java( Test code )、src/test/resources( Test resources ), The difference in src/main/java( Project source code )、src/main/resources( Project resources ).

Spring Provides a SpringJunitClassRunner class , It provides Spring TestContext Framework The function of .

adopt @ContextConfiguration To configure the Application Context, adopt @ActiveProfiles Determine the activity's profile.

In the use of the Spring After testing , Before my blog wrote the run class , In other words, the running part can be used Spring Test to see if the function works properly .

Integration testing involves layers in the program , This section is only for simple configuration Application Context And inject... Into the test Bean Do a demonstration .

Example

Get ready

First , We need to prepare for , increase Spring Test dependency package to Maven. That is, to join in pom.xml In the middle .

<!--Spring test Support -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>

Business code

This source code in src/main/java Next

package cn.hncu.p3.p7_fortest;
/**
* Created with IntelliJ IDEA.
* User: Chen Haoxiang .
* Date: 2016/12/9.
* Time: Afternoon 9:21.
* Explain: Business code
*/
public class TestBean {
private String content;
public TestBean(String content) {
super();
this.content = content;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
}

Configuration class

This source code in src/main/java Next

package cn.hncu.p3.p7_fortest;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
/**
* Created with IntelliJ IDEA.
* User: Chen Haoxiang .
* Date: 2016/12/9.
* Time: Afternoon 9:23.
* Explain: Configuration class
*/
@Configuration
public class TestConfig {
@Bean
@Profile("dev")
public TestBean devTestBean(){
return new TestBean("development profile");
}
@Bean
@Profile("prod")
public TestBean prodTestBean(){
return new TestBean("production profile");
}
}

test

Be careful ! This source code in src/test/java Next

package cn.hncu.p3.p7_fortest;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* Created with IntelliJ IDEA.
* User: Chen Haoxiang .
* Date: 2016/12/9.
* Time: Afternoon 9:27.
* Explain: Test class --- The source code in src/test/java Next
*/
@RunWith(SpringJUnit4ClassRunner.class)// stay SpringJUnit4ClassRunner stay Junit Provide... In an environment Spring TextContext Framework The function of
@ContextConfiguration(classes = {TestConfig.class})//@ContextConfiguration Used to load configuration ApplicationContext, among classes Property to load the configuration class
@ActiveProfiles("prod")
public class DemoBeanIntegrationTests {
@Autowired// You can use ordinary @Autowired Inject Bean
private TestBean testBean;
@Test// Test code , adopt Junit Of Assert To verify that the results are as expected
public void prodBeanShouldInject(){
String expected = "production profile";
String actual = testBean.getContent();
System.out.println(actual);
Assert.assertEquals(expected,actual);// It is used to check whether the value stored in the object is the expected value , Compared with the string used in equals() The method is similar to ;
}
}

Running results

Let's change the test class now

Put the

@ActiveProfile(“prod”) Change it to @ActiveProfile(“dev”) Just change here .

Look at the results :

This is the result of a test that fails !

There will be a red alert !

This is the source code link of the project , Click to enter

This article is written by [ Familiar with memory ] To write , All rights reserved .

Reprint please indicate the source :http://blog.csdn.net/qq_26525215 This article comes from College trip _ The blog of memory

Participation of this paper Tencent cloud media sharing plan , You are welcome to join us , share .

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