assumeTrue and assumeFalse in JUnit - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to skip the test if the condition is false using assumeTrue.

JUnit

import static org.junit.jupiter.api.Assumptions.assumeTrue;

@Test
void testOnlyOnWindows() {
    assumeTrue(System.getProperty("os.name").startsWith([1]));
    // test code here
}

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

A"Mac"

B"Windows"

C"Linux"

D"Unix"

Attempts:

3 left

💡 Hint

Common Mistakes

Using assumeFalse instead of assumeTrue here.

Not using quotes around the string "Windows".

Using incorrect OS name string.

The assumeTrue method skips the test if the condition is false. Here, the test runs only if the OS name starts with "Windows".

2fill in blank

medium

Complete the code to skip the test if the condition is true using assumeFalse.

JUnit

import static org.junit.jupiter.api.Assumptions.assumeFalse;

@Test
void testSkipOnCI() {
    assumeFalse("CI".equals(System.getenv([1])));
    // test code here
}

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

A"BUILD"

B"ENV"

C"CI"

D"JENKINS"

Attempts:

3 left

💡 Hint

Common Mistakes

Using assumeTrue instead of assumeFalse here.

Using wrong environment variable name.

Not using quotes around the environment variable name.

The assumeFalse method skips the test if the condition is true. Here, the test is skipped if the environment variable "CI" is set.

3fill in blank

hard

Fix the error in the assumption to skip the test if the user is not admin.

JUnit

import static org.junit.jupiter.api.Assumptions.assumeTrue;

@Test
void testAdminOnly() {
    assumeTrue(System.getProperty("user.role").equals([1]));
    // test code here
}

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

A"user"

Badmin

Ctrue

D"admin"

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted admin causing syntax error.

Using boolean true instead of string comparison.

Comparing to "user" instead of "admin".

The assumeTrue condition must compare the user role string to "admin" with quotes. Without quotes, it causes a compile error.

4fill in blank

hard

Fill both blanks to skip the test if the Java version is less than 11.

JUnit

import static org.junit.jupiter.api.Assumptions.assumeTrue;

@Test
void testJava11OrHigher() {
    String version = System.getProperty("java.version");
    assumeTrue(Integer.parseInt(version.split("\\.")[[1]]) [2] 11);
    // test code here
}

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

A0

B1

C<

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using index 1 instead of 0 for version.

Using < instead of >= operator.

Not parsing the version string to integer.

Java version strings start with major version at index 0. To skip the test if the Java version is less than 11, assumeTrue that the major version >= 11.

5fill in blank

hard

Fill all three blanks to skip the test if the environment is not "dev" or the user is not "tester".

JUnit

import static org.junit.jupiter.api.Assumptions.assumeTrue;

@Test
void testDevTesterOnly() {
    String env = System.getenv([1]);
    String user = System.getProperty([2]);
    assumeTrue(env.equals([3]) && user.equals("tester"));
    // test code here
}

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

A"ENVIRONMENT"

B"user.name"

C"dev"

D"production"

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong environment variable or property names.

Using "production" instead of "dev".

Not quoting string literals.

We get environment variable "ENVIRONMENT" and system property "user.name". The test runs only if environment is "dev" and user is "tester".