JUnit

Question 1

What is JUnit?

Answer 1

JUnit is a unit testing framework for the Java programming language

Question 2

What is TDD?

Answer 2

Test Driven Development (TDD) is a software development approach in which test cases are developed to specify and validate what the code will do

Question 3

What are the annotations in JUnit? And in what order should they be executed?

Answer 3

@BeforeClass - Executed before the first @Test method

@Before - Executed before all @Test methods in the JUnit test class

@Test - Executed for all @Test methods

@After - Executed after all @Test methods

@AfterClass - Executed after all the @Test methods in the JUnit test class

Question 4

Give and example of a test case

Answer 4

@Test
    public void addNumberTest(){
        // Arrange
        Calculator calculator = new Calculator();

        // Act
        int actualResult = calculator.addNumber(10, 20);

        // Assert
        int expectedResult = 30;
        assertEquals(expectedResult, actualResult);
    }

Question 5

How would you prevent a test from being run without commenting it out?

Answer 5

The @Disabled annotation disables a test without having to comment it out. Placed before the @Test annotation