Table of contents
Properties specific to loading tests
Using external beans for testing
The speed test class starts the web environment
Properties specific to loading tests
Click to view @SpringBootTest source code
Temporary configuration can be added later, or can be set using the command line args parameter. Test-specific parameters set will override those in the configuration file.
package com;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest(args = {properties = {"test.properties=1234"})
public class TestProperties {
@Value("${test.properties}")
private String ps;
@Test
public void test(){
System.out.println(ps);
}
}
operation result
You can also use command line arguments
args = {"--test.properties=4321"},
The priority of the command line parameters is higher than that of the configuration file, so when the two coexist, the command line is the main one.
@SpringBootTest(args = {"--test.properties=4321"},properties = {"test.properties=1234"})
The properties set by this test class are only valid for the current test and have little impact
Using external beans for testing
package com.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration//说明当前为配置类
public class TestBean {
@Bean//创建bean
public String mess(){
return "this bean run ";
}
}
Under the test class, use the @Import annotation to load the current test configuration
package com.test;
import com.config.TestBean;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.annotation.Import;
@SpringBootTest
@Import({TestBean.class})
public class TestBeanNow {
@Autowired//注入bean对象
public String mess;
@Test
public void test(){
System.out.println(mess);
}
}
operation result
The speed test class starts the web environment
Running in the test class generally does not start the server, as shown in the figure below. Both show the success or failure of the operation
Let's Ctrl+b click into the @SpringBootTest source code to view, there is a web
The default value is MOCK, mock: a simulated web environment is provided by default, and the embedded server will not be started
we are in test class
The first one starts with the port specified in your configuration file, if not, it starts with 8080 by default
The second mock: a simulated web environment is provided by default, and the embedded server will not be started
The third is to not start the server
The fourth is random port startup
We test random port startup
package com;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class WebTest {
@Test
public void test(){
}
}
operation result
Run it twice to see the port results, they are all random
