Maven Surefire plugin in JUnit - Test Execution Trace

Test Overview

This test runs a simple JUnit test using the Maven Surefire plugin. It verifies that the test method executes and passes successfully when run by Maven.

Test Code - JUnit 5

JUnit

import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;

public class CalculatorTest {
    @Test
    void additionTest() {
        int result = 2 + 3;
        assertEquals(5, result, "2 + 3 should equal 5");
    }
}

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Maven Surefire plugin starts test execution	Maven build environment initialized, test classes compiled	-	PASS
2	Surefire plugin loads CalculatorTest class	CalculatorTest class loaded into JVM	-	PASS
3	Surefire invokes additionTest() method	Test method running, performing addition 2 + 3	-	PASS
4	JUnit assertion checks if result equals 5	Result is 5, assertion compares expected 5 with actual 5	assertEquals(5, result)	PASS
5	Surefire reports test success	Test passed, Surefire logs success in test report	-	PASS

Failure Scenario

Failing Condition: The assertion fails because the addition result is incorrect

Execution Trace Quiz - 3 Questions

What does the Maven Surefire plugin do in this test?

A Runs the JUnit test methods and reports results

B Compiles the Java source code only

C Deploys the application to a server

D Generates HTML documentation

Key Result

Use Maven Surefire plugin to automate running JUnit tests during the build process, ensuring tests are executed consistently and results are reported clearly.