JUnit-execute test

JUnit-execute test

Test cases are executed using the JUnitCore class. JUnitCore is the appearance class for running tests. It supports running JUnit 4 tests, JUnit 3.8.x tests, or a mixture of them. To run the test from the command line, you can run java org.junit.runner.JUnitCore. For only one test run, you can use the static method runClasses (Class []).

Create a tested Java class MessageUtil.java

package 执行测试;

public class MessageUtil {

    String message;

    MessageUtil(String message){
        this.message = message;
    }

    public String printMessage(){
        System.out.println("MessageUtil类中printMessage()方法中的输出信息："+message);
        return message;
    }


}

Create test case class

• Create a java test class called TestJunit.java.
• Add a test method testPrintMessage () to the class.
• Add the annotation @Test to the method testPrintMessage ().
• Implement test conditions and check the test conditions using Junit's assertEquals API.

package 执行测试;

import org.junit.Test;

import static org.junit.Assert.assertEquals;

public class TestJunit {

    String message = "测试信息";

    MessageUtil messageUtil = new MessageUtil(message);


    @Test
    public void testPrintMessage() {
        assertEquals(message, messageUtil.printMessage());
    }

}

Create a java class TestRunner.java to execute the test case, export the JUnitCore class and use the runClasses () method, taking the test class name as a parameter.

package 执行测试;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class TestRunner {
    public static void main(String[] args) {

        Result result = JUnitCore.runClasses(TestJunit.class);

        for(Failure failure:result.getFailures()){
            System.out.println(failure.toString());
        }

        System.out.println(result.wasSuccessful());

    }
}

Test Results