Custom display names for parameters in JUnit - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to use a custom display name for a parameter in a JUnit 5 test.

JUnit

@ParameterizedTest
@ValueSource(strings = {"apple", "banana"})
void testWithCustomName(@[1]("fruit") String fruit) {
    assertNotNull(fruit);
}

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

ADisplayNameValue

BDisplayName

CName

DParameterName

Attempts:

3 left

💡 Hint

Common Mistakes

Using @Name instead of @DisplayName.

Using @ParameterName which does not exist.

The @DisplayName annotation is used to provide a custom display name for a parameter in JUnit 5.

2fill in blank

medium

Complete the code to set a custom display name for a parameter in a JUnit 5 parameterized test.

JUnit

@ParameterizedTest(name = "Test with fruit: {0}")
@ValueSource(strings = {"apple", "banana"})
void testFruit(@[1]("fruitName") String fruit) {
    assertFalse(fruit.isEmpty());
}

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

AName

BDisplayNameValue

CParameterName

DDisplayName

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing @DisplayName with @Name.

Trying to use @ParameterName which is not valid.

Use @DisplayName to assign a custom name to the parameter for better test reporting.

3fill in blank

hard

Fix the error in the code to correctly use a custom display name for a parameter in JUnit 5.

JUnit

@ParameterizedTest
@ValueSource(strings = {"cat", "dog"})
void testAnimals(@[1]("animal") String animal) {
    assertTrue(animal.length() > 0);
}

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

ADisplayName

BParamName

CName

DDisplayNameValue

Attempts:

3 left

💡 Hint

Common Mistakes

Using @DisplayNameValue which is not a valid annotation.

Using @ParamName which does not exist.

The correct annotation to set a custom display name for a parameter is @DisplayName.

4fill in blank

hard

Fill both blanks to create a parameterized test with a custom display name for the parameter and a custom test name.

JUnit

@ParameterizedTest(name = "Test with number: {0}")
@ValueSource(ints = {1, 2, 3})
void testNumbers(@[1]("num") int number, @[2]("value") int value) {
    assertEquals(number, value);
}

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

ADisplayName

BParameterName

DName

Attempts:

3 left

💡 Hint

Common Mistakes

Using different or invalid annotations for parameters.

Using @ParameterName which is not valid.

Both parameters use @DisplayName to set custom display names for better test reports.

5fill in blank

hard

Fill all three blanks to create a parameterized test with custom display names for parameters and a custom test name pattern.

JUnit

@ParameterizedTest(name = "Run {index}: {0} - {1} - {2}")
@CsvSource({"apple, red, 1", "banana, yellow, 2"})
void testFruits(@[1]("fruit") String fruit, @[2]("color") String color, @[3]("count") int count) {
    assertNotNull(fruit);
    assertNotNull(color);
    assertTrue(count > 0);
}

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

ADisplayName

DParameterName

Attempts:

3 left

💡 Hint

Common Mistakes

Using @ParameterName or other invalid annotations.

Mixing different annotations for parameters.

All parameters use @DisplayName to provide custom names for clearer test reports.