package org.junit.tests.experimental.categories;
   
   import org.junit.Test;
   import org.junit.experimental.categories.Categories;
   import org.junit.experimental.categories.Category;
   import org.junit.runner.JUnitCore;
   import org.junit.runner.Result;
   import org.junit.runner.RunWith;
   import org.junit.runners.Suite;
  
  import static org.hamcrest.core.Is.is;
  import static org.junit.Assert.assertThat;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  /**
   * @author tibor17
   * @version 4.12
   * @since 4.12
   */
  public class JavadocTest {
      public static interface FastTests {}
      public static interface SlowTests {}
      public static interface SmokeTests {}
  
      public static class A {
          public void a() {
              fail();
          }
  
          @Category(SlowTests.class)
          @Test
          public void b() {
          }
  
          @Category({FastTests.class, SmokeTests.class})
          @Test
          public void c() {
          }
      }
  
      @Category({SlowTests.class, FastTests.class})
      public static class B {
          @Test
          public void d() {
          }
      }
  
      @RunWith(Categories.class)
      @Categories.IncludeCategory(SlowTests.class)
      @Suite.SuiteClasses({A.class, B.class})
      public static class SlowTestSuite {
          // Will run A.b and B.d, but not A.a and A.c
      }
  
      @RunWith(Categories.class)
      @Categories.IncludeCategory({FastTests.class, SmokeTests.class})
      @Suite.SuiteClasses({A.class, B.class})
      public static class FastOrSmokeTestSuite {
          // Will run A.c and B.d, but not A.b because it is not any of FastTests or SmokeTests
      }
  
      @Test
      public void slowTests() {
          Result testResult= JUnitCore.runClasses(SlowTestSuite.class);
          assertTrue(testResult.wasSuccessful());
          assertThat("unexpected run count", testResult.getRunCount(), is(2));
          assertThat("unexpected failure count", testResult.getFailureCount(), is(0));
      }
  
      @Test
      public void fastSmokeTests() {
          Result testResult= JUnitCore.runClasses(FastOrSmokeTestSuite.class);
          assertTrue(testResult.wasSuccessful());
          assertThat("unexpected run count", testResult.getRunCount(), is(2));
          assertThat("unexpected failure count", testResult.getFailureCount(), is(0));
      }
  }