Springboot编写 junit4 测试

1. 引入 mvn坐标

   <!-- https://mvnrepository.com/artifact/junit/junit -->
       <dependency>
           <groupId>junit</groupId>
           <artifactId>junit</artifactId>
           <version>4.13</version>
           <scope>compile</scope>
       </dependency>
   
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
       </dependency>
              

2. 配置测试类能读取到配置文件 ,可以重新配置resource 也可以用正常的 ,配置如下

   <build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <fork>true</fork> <!-- 如果没有该配置，devtools不会生效 -->
            </configuration>
        </plugin>
    </plugins>
    <testResources>
        <testResource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.yml</include>
            </includes>
            <filtering>true</filtering>
        </testResource>
    </testResources>
              

3. 新建 TestApplication 主启动类

   package com.cxqz;

   import org.springframework.boot.SpringApplication;

   import org.springframework.boot.autoconfigure.SpringBootApplication;

   @SpringBootApplication

   public class TestApplication {

   public static void main(String[] args) {

   SpringApplication.run(TestApplication.class,args);

   }

   }

4. 表写所有要测试的类都要实现的 主类 ContextConfiguration

   package com.cxqz;

   import org.junit.runner.RunWith;

   import org.springframework.boot.test.context.SpringBootTest;

   import org.springframework.test.context.ContextConfiguration;

   import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

   @SpringBootTest

   @RunWith(SpringJUnit4ClassRunner.class)

   @ContextConfiguration(classes = TestApplication.class)

   public class AbstractContextServiceTest {

   }

5. 编写测试类 , 注意 点
   1. 测试类要 extends AbstractContextServiceTest
   2. 对要测试的类 后面加Test ,例如要测试 AlgoService类,那么测试类就叫 AlgoServiceTest
   3. 每个类都单独鞋测试类,形成好习惯
   package com.cxqz.service.handler;

import cn.hutool.core.collection.CollectionUtil;

import com.cxqz.AbstractContextServiceTest;

import org.junit.Test;

import org.springframework.beans.factory.annotation.Autowired;

import java.util.Map;

public class AlgoServiceTest extends AbstractContextServiceTest {

@Autowired
private AlgoService algoService;
@Test
public void testSave() throws Exception {
    Map sensorData = CollectionUtil.newHashMap();
    sensorData.put("a","1");
    String url = "http://192.168.21.46:8084/topic/print";
    algoService.save(url,sensorData);
}

@Test
public void getDeviceByIdTest() throws Exception {
    Map data = algoService.getDeviceById("小流水线1");
    System.out.println(data);
}
           

}