JUnit 5 Tutorial : Display name
In JUnit 5, we can use @DisplayName to declare custom display names for test classes and test methods.
Display Name Example
package com.bootng.display;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
public class DisplayCustomNameTest {
@Test
public void test_if_it_will_rain() {
}
@Test
public void test_if_it_will_be_cloudy() {
}
@Test
public void test_if_it_will_be_sunny() {
}
}
Output
Display CustomName Example
package com.bootng.display;
@DisplayName("Vacation Weather Test")
public class DisplayCustNameTest {
@DisplayName("🌧")
@Test
public void test_if_it_will_rain() {
}
@DisplayName("🌨")
@Test
public void test_if_it_will_be_cloudy() {
}
@DisplayName("🌞")
@Test
public void test_if_it_will_be_sunny() {
}
}
Output
Custom Name Generator Example
We can also use a Custom Name generator to generate the test names. As of Version 5.4 it comes with the following generators out of the box.
DisplayNameGenerator.IndicativeSentences
DisplayNameGenerator.ReplaceUnderscores
DisplayNameGenerator.Simple
DisplayNameGenerator.Standard
Each of the above generators has different implementations of how to generate test name.
In the Following example we are using ReplaceUnderscores. As a result the test names will be generated by replacing the "_" from respective names.
package com.bootng.display;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
@DisplayName("Weather Test DisplayExample ")
@DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
public class DisplayGeneratorExampleTest {
@Test
public void test_if_it_will_rain() {
}
@Test
public void test_if_it_will_be_cloudy() {
}
@Test
public void test_if_it_will_be_sunny() {
}
}
Output
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