CategoriesAndParameterizedTest.java

package org.junit.tests.experimental.categories;

import static org.junit.Assert.assertThat;
import static org.junit.experimental.results.PrintableResult.testResult;
import static org.junit.experimental.results.ResultMatchers.hasFailureContaining;
import static org.junit.experimental.results.ResultMatchers.isSuccessful;

import java.util.Collection;
import java.util.Collections;

import org.junit.Assert;
import org.junit.Test;
import org.junit.experimental.categories.Categories;
import org.junit.experimental.categories.Categories.IncludeCategory;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import org.junit.runners.Suite.SuiteClasses;

public class CategoriesAndParameterizedTest {
    public static class Token {

    }

    @RunWith(Parameterized.class)
    public static class WellBehavedParameterizedTest {
        public WellBehavedParameterizedTest(String a) {
        }

        @Parameters
        public static Collection<Object[]> getParameters() {
            return Collections.singletonList(new Object[]{"a"});
        }

        @Test
        public void testSomething() {
            Assert.assertTrue(true);
        }
    }

    @RunWith(Parameterized.class)
    public static class ParameterizedTestWithAttemptedMethodCategory {
        public ParameterizedTestWithAttemptedMethodCategory(String a) {
        }

        @Parameters
        public static Collection<Object[]> getParameters() {
            return Collections.singletonList(new Object[]{"a"});
        }

        @Test
        @Category(Token.class)
        public void testSomething() {
            Assert.assertTrue(true);
        }
    }

    @RunWith(Parameterized.class)
    @Category(Token.class)
    public static class ParameterizedTestWithClassCategory {
        public ParameterizedTestWithClassCategory(String a) {
        }

        @Parameters
        public static Collection<Object[]> getParameters() {
            return Collections.singletonList(new Object[]{"a"});
        }

        @Test
        public void testSomething() {
            Assert.assertTrue(true);
        }
    }

    @Category(Token.class)
    public static class VanillaCategorizedJUnitTest {
        @Test
        public void testSomething() {
            Assert.assertTrue(true);
        }
    }

    @RunWith(Categories.class)
    @IncludeCategory(Token.class)
    @SuiteClasses({VanillaCategorizedJUnitTest.class,
            WellBehavedParameterizedTest.class,
            ParameterizedTestWithClassCategory.class})
    public static class ParameterTokenSuiteWellFormed {
    }

    @RunWith(Categories.class)
    @IncludeCategory(Token.class)
    @SuiteClasses({ParameterizedTestWithAttemptedMethodCategory.class, VanillaCategorizedJUnitTest.class})
    public static class ParameterTokenSuiteMalformed {
    }

    @RunWith(Categories.class)
    @IncludeCategory(Token.class)
    @SuiteClasses({VanillaCategorizedJUnitTest.class, ParameterizedTestWithAttemptedMethodCategory.class})
    public static class ParameterTokenSuiteMalformedAndSwapped {
    }

    @Test
    public void shouldSucceedWithAParameterizedClassSomewhere() {
        assertThat(testResult(ParameterTokenSuiteWellFormed.class),
                isSuccessful());
    }

    @Test
    public void shouldFailWithMethodLevelCategoryAnnotation() {
        assertThat(
                testResult(ParameterTokenSuiteMalformed.class),
                hasFailureContaining("Category annotations on Parameterized classes are not supported on individual methods."));
    }

    @Test
    public void shouldFailWithMethodLevelCategoryAnnotationSwapped() {
        assertThat(
                testResult(ParameterTokenSuiteMalformedAndSwapped.class),
                hasFailureContaining("Category annotations on Parameterized classes are not supported on individual methods."));
    }
}