First JUnit test - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the JUnit test annotation.

JUnit

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

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AAfterAll

BBeforeEach

CDisabled

DTest

Attempts:

3 left

💡 Hint

Common Mistakes

Importing other annotations like BeforeEach instead of Test.

Forgetting to import any annotation.

The @Test annotation marks a method as a test method in JUnit 5.

2fill in blank

medium

Complete the code to write a simple test method named testAddition.

JUnit

@Test
public void [1]() {
    int sum = 2 + 3;
    org.junit.jupiter.api.Assertions.assertEquals(5, sum);
}

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AtestAddition

BcheckSum

CadditionTest

DsumTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different method name than requested.

Forgetting the @Test annotation.

The test method should be named testAddition as requested.

3fill in blank

hard

Fix the error in the assertion to correctly check that result equals 10.

JUnit

int result = 5 + 5;
org.junit.jupiter.api.Assertions.assertEquals([1], result);

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A10

B5 + 5

C"10"

Dresult

Attempts:

3 left

💡 Hint

Common Mistakes

Using the variable result as expected value.

Using a string "10" instead of integer 10.

The expected value should be the integer 10, not a string or variable.

4fill in blank

hard

Fill both blanks to create a test method that checks if multiply(2, 3) returns 6.

JUnit

@Test
public void [1]() {
    int output = multiply(2, 3);
    org.junit.jupiter.api.Assertions.[2](6, output);
}

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AtestMultiply

BassertEquals

CassertTrue

DmultiplyTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using assertTrue instead of assertEquals.

Using a wrong method name.

The method name should be testMultiply and the assertion method is assertEquals to compare expected and actual values.

5fill in blank

hard

Fill all three blanks to write a test method that verifies isEven(4) returns true.

JUnit

@Test
public void [1]() {
    boolean result = isEven([2]);
    org.junit.jupiter.api.Assertions.[3](result);
}

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

AtestIsEven

B4

CassertEquals

DassertTrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using assertEquals instead of assertTrue for boolean checks.

Passing wrong input value.

The method name is testIsEven, the input is 4, and the assertion is assertTrue to check the boolean result.