Excluding a non param test in parameterized test class

Question

Is there any annotation in JUnit to exclude a non param test in parameterized test class?

Answer 1

JUnit 5

As of Junit 5.0.0 you can now annotate your test methods with @ParameterizedTest. So no need for inner classes. There are many ways to supply the arguments to the parameterized test apart from ValueSource as shown below. See the official junit user guide for details:

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

public class ComponentTest {

    @ParameterizedTest
    @ValueSource(strings = { "racecar", "radar", "able was I ere I saw elba" })
    public void testCaseUsingParams(String candidate) throws Exception {
    }

    @Test
    public void testCaseWithoutParams() throws Exception {
    }
}

JUnit 4

If you are still using Junit 4 (I tested with v4.8.2) you can use the Enclosed runner in conjunction with inner classes and the Parameterized runner:

import org.junit.Test;
import org.junit.experimental.runners.Enclosed;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

@RunWith(Enclosed.class)
public class ComponentTest {

    @RunWith(Parameterized.class)
    public static class ComponentParamTests {

        @Parameters
        ...

        @Test
        public void testCaseUsingParams() throws Exception {
        }
    }

    public static class ComponentSingleTests {

        @Test
        public void testCaseWithoutParams() throws Exception {
        }
    }
}

Answer 2

No. The best practice is to move those non-parameterized tests to a different class (.java file)

Answer 3

Zohhak test runner is a simpler way to parameterize specific tests. Thanks Piotr!