Test classes and naming in JUnit - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a JUnit test class named correctly.

JUnit

public class [1] {

}

Drag options to blanks, or click blank then click option'

ACalculatorTest

Bcalculator

CTestCalculator

DcalcTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or incomplete names like 'calculator' or 'calcTest'.

Starting the name with 'Test' instead of ending with it.

The test class should be named with the class name followed by Test suffix, e.g., CalculatorTest.

2fill in blank

medium

Complete the code to import the JUnit 5 test annotation.

JUnit

import org.junit.jupiter.api.[1];

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ATest

BBeforeEach

CTestClass

DTestSuite

Attempts:

3 left

💡 Hint

Common Mistakes

Importing annotations like 'BeforeEach' when the task asks for the test annotation.

Using 'TestClass' or 'TestSuite' which are not JUnit 5 annotations.

The correct annotation to mark a test method in JUnit 5 is @Test, so you import Test.

3fill in blank

hard

Fix the error in the test class declaration by completing the class name correctly.

JUnit

public class [1] {

    @Test
    void exampleTest() {
        // test code
    }
}

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ATestExample

BExample

CExampleTest

Dexampletest

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase class names which is against Java naming conventions.

Starting the name with 'Test' instead of ending with it.

The test class name should end with 'Test' and start with a capital letter, so 'ExampleTest' is correct.

4fill in blank

hard

Fill both blanks to complete a JUnit 5 test class with a test method named correctly.

JUnit

public class [1] {

    @[2]
    void shouldAddNumbers() {
        // test code
    }
}

Drag options to blanks, or click blank then click option'

ACalculatorTest

BTest

CBeforeEach

DAdderTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using '@BeforeEach' instead of '@Test' for the test method.

Naming the class without the 'Test' suffix.

The class name should end with 'Test' and the method should be annotated with '@Test' to mark it as a test method.

5fill in blank

hard

Fill all three blanks to complete a JUnit 5 test class with a test method and proper import.

JUnit

import org.junit.jupiter.api.[1];

public class [2] {

    @[3]
    void testMultiply() {
        // test code
    }
}

Drag options to blanks, or click blank then click option'

ATest

BMultiplierTest

DMultiplyTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using different annotations for import and method.

Class name not ending with 'Test'.

Import the '@Test' annotation, name the class properly ending with 'Test', and annotate the test method with '@Test'.