Spring Framework Master Class - Java Spring the Modern Way - Step 3-First Code and First Unit Test

The video tutorial covers the process of writing and running JUnit tests for a sum method in a Java class. It begins with setting up a simple test case to verify the sum of three numbers. The tutorial explains how to use JUnit's assertEquals method to check if the expected and actual results match. It demonstrates testing with different inputs and highlights the importance of continuous testing to catch bugs introduced by code changes. The video concludes with tips on optimizing test code by reusing instances and inlining variables.

What is the initial scenario used to test the MyMath sum method?

• Multiplying three numbers

• Adding two numbers

• Adding three numbers

• Subtracting two numbers

Which JUnit method is used to verify that the expected and actual values are the same?

• assertSame

• assertEquals

• assertFalse

• assertTrue

What happens if the expected result in a JUnit test does not match the actual result?

• The test passes silently

• The test skips the assertion

• The test throws an exception

• The test fails with an assertion error

What is the expected result when the sum method is called with a single number?

• An error is thrown

• The number itself

• Zero

• Double the number

What is the purpose of running JUnit tests continuously?

• To optimize code performance

• To ensure the code compiles

• To detect bugs introduced by code changes

• To improve code readability

What improvement is suggested for creating instances in JUnit tests?

• Avoid using instances altogether

• Create a common instance for all tests

• Use a static instance for all tests

• Create a new instance for each test

What is the benefit of inlining variables in JUnit tests?

• It makes the code longer

• It reduces the number of lines

• It complicates the code

• It increases the number of variables