Unit tests using @springboottest annotations

Overview

The @SpringBootTest annotation is an annotation for testing that was introduced by Springboot since the 1.4.0 version. The basic usage is as follows: 1. Add maven dependencies

<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </propert ies> <parent> <groupId>org.springframework.boot</groupId> <artifactid>spri ng-boot-starter-parent</artifactid> <version>1.5.6.RELEASE</version> </parent> &L
            T;dependencies> <dependency> <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> &LT;ARTIFACTID&GT;SPRING-BOOT-STARTER-TEST&L
            t;/artifactid> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactid >spring-boot-maven-plugin</artifactid> </plugin> </plugins> </build> 

2. Write Startup entry class

@SpringBootApplication public
class Startupapplication {public
    static void Main (string[] args) {
        Springapplication.run (Startupapplication.class, args);
    }

3. Writing the Controller class

@RestController public
class Hellocontroller {

    @RequestMapping ("/") public
    String Index () {
        Return "Hello Spring boot,index!";
    }

    @RequestMapping (value = "/test", method = requestmethod.get) public
    String test () {return
        "Spring Boot test Dem O! ";
    }
}

4. Writing test class

 @RunWith (Springrunner.class) @SpringBootTest (classes = startupapplication.class, webenvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) public class Hellocontrollertest {/** * @LocalServerPort provides @Value (

    "${local.server.port}") instead of/@LocalServerPort private int port;

    Private URL base;

    @Autowired private Testresttemplate resttemplate;
        @Before public void SetUp () throws Exception {String url = String.Format ("http://localhost:%d/", port);
        System.out.println (String.Format ("Port is: [%d]", port));
    this.base = new URL (URL); /** * Sends the request to the "/test" address and prints the result * @throws Exception * * @Test public void test1 () throws Excepti  on {responseentity<string> response = this.restTemplate.getForEntity (This.base.toString ()
        + "/test", String.class, "" ");
    System.out.println (String.Format ("Test Result:%s", Response.getbody ())); }

where the Classes property specifies the startup class, SpringBootTest.WebEnvironment.RANDOM_PORT is often used with the @localserverport in the test class to inject the property. Randomly generates a port number. Summary

We found that as the spring boot version was upgraded, unit testing became simpler.