@EnabledIfSystemProperty in JUnit - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable the test only if the system property 'env' equals 'test'.

JUnit

@EnabledIfSystemProperty(named = "env", matches = "[1]")
void testEnvironment() {
    // test code here
}

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

Aprod

Btest

Cdev

Dstage

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong property value in 'matches' so the test never runs.

Confusing 'named' with the property value.

The test runs only when the system property 'env' matches 'test'.

2fill in blank

medium

Complete the code to enable the test only if the system property 'os.name' contains 'Linux'.

JUnit

@EnabledIfSystemProperty(named = "os.name", matches = ".*[1].*")
void testOnLinux() {
    // test code here
}

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

ALinux

BMac

CWindows

DUnix

Attempts:

3 left

💡 Hint

Common Mistakes

Not using regex wildcards '.*' causing the test not to run.

Using incorrect OS name spelling.

The regex '.*Linux.*' matches any string containing 'Linux', enabling the test on Linux OS.

3fill in blank

hard

Fix the error in the annotation to enable the test only if the system property 'user.language' equals 'en'.

JUnit

@EnabledIfSystemProperty(named = "user.language", matches = "[1]")
void testEnglishLanguage() {
    // test code here
}

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

AEN

BeN

CEn

Den

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase or mixed case causing the test not to run.

Confusing language codes with country codes.

System properties are case-sensitive; 'en' is the correct lowercase code for English language.

4fill in blank

hard

Fill both blanks to enable the test only if the system property 'java.version' starts with '17'.

JUnit

@EnabledIfSystemProperty(named = "[1]", matches = "[2].*")
void testJava17() {
    // test code here
}

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

Ajava.version

Bjava.home

C17

D18

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong system property name.

Incorrect regex pattern causing test not to run.

The test runs only if 'java.version' starts with '17', matching the regex '17.*'.

5fill in blank

hard

Fill all three blanks to enable the test only if the system property 'user.timezone' equals 'UTC' and the property 'env' equals 'prod'.

JUnit

@EnabledIfSystemProperty(named = "[1]", matches = "[2]")
@EnabledIfSystemProperty(named = "[3]", matches = "prod")
void testProdUTC() {
    // test code here
}

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

Auser.timezone

BUTC

Cenv

Dtimezone

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing property names or values between annotations.

Using incorrect property names causing test not to run.

The first annotation checks 'user.timezone' equals 'UTC', the second checks 'env' equals 'prod'. Both must be true to enable the test.