Examples of org.junit.runner.manipulation.Filter

org.junit.runner.manipulation.Filter
The canonical case of filtering is when you want to run a single test method in a class. Rather than introduce runner API just for that one case, JUnit provides a general filtering mechanism. If you want to filter the tests to be run, extend Filter and apply an instance of your filter to the {@link org.junit.runner.Request} before running it (see{@link org.junit.runner.JUnitCore#run(Request)}. Alternatively, apply a Filter to a {@link org.junit.runner.Runner} before running tests (for example, in conjunction with{@link org.junit.runner.RunWith}. @since 4.0

    }


    @Test(expected = NoTestsRemainException.class)
    public void filteringAwayEverythingThrowsException() throws NoTestsRemainException {
        Filterable runner = (Filterable) Request.aClass(OneTimeSetup.class).getRunner();
        runner.filter(new Filter() {
            @Override
            public boolean shouldRun(Description description) {
                return false;
            }

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public class FilterableTest {
    public static class FilteredRunner extends Parameterized {
        public FilteredRunner(Class<?> klass) throws Throwable {
            super(klass);
            filter(new Filter() {


                @Override
                public boolean shouldRun(Description description) {
                    return !description.getDisplayName().contains("skip");
                }

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  }


  @Test(expected = NoTestsRemainException.class)
  public void filteringAwayEverythingThrowsException() throws NoTestsRemainException {
    Filterable runner = (Filterable) Request.aClass(OneTimeSetup.class).getRunner();
    runner.filter(new Filter() {
      @Override
      public boolean shouldRun(Description description) {
        return false;
      }

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      }
    }


    public LuceneTestCaseRunner(Class<?> clazz) throws InitializationError {
      super(clazz);
      Filter f = new Filter() {


        @Override
        public String describe() { return "filters according to TEST_METHOD"; }


        @Override
        public boolean shouldRun(Description d) {
          return TEST_METHOD == null || d.getMethodName().equals(TEST_METHOD);
        }     
      };
      
      try {
        f.apply(this);
      } catch (NoTestsRemainException e) {
        throw new RuntimeException(e);
      }
    }

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        private boolean areSuitesAndClassesParallel() {
            return !suites.isEmpty() && allGroups.get(Type.SUITES) > 0 && !classes.isEmpty() && allGroups.get(Type.CLASSES) > 0;
        }


        private void populateChildrenFromSuites() {
            Filter filter = new SuiteFilter();
            for (Iterator<ParentRunner> it = suites.iterator(); it.hasNext();) {
                ParentRunner suite = it.next();
                try {
                    suite.filter(filter);
                } catch (NoTestsRemainException e) {

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    {
        final ReporterFactory reporterFactory = providerParameters.getReporterFactory();


        final ConsoleLogger consoleLogger = providerParameters.getConsoleLogger();


        Filter filter = jUnit48Reflector.isJUnit48Available() ? createJUnit48Filter() : null;


        if ( testsToRun == null )
        {
            if ( forkTestSet instanceof TestsToRun )
            {

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    }


    private Filter createJUnit48Filter()
    {
        final FilterFactory filterFactory = new FilterFactory( testClassLoader );
        Filter groupFilter = filterFactory.createGroupFilter( providerParameters.getProviderProperties() );
        return isMethodFilterSpecified() ? filterFactory.and( groupFilter,
                                                              filterFactory.createMethodFilter( requestedTestMethod ) )
                        : groupFilter;
    }

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    }


    private Request applyFilterSpecs(Request request) {
        try {
            for (String filterSpec : filterSpecs) {
                Filter filter = FilterFactories.createFilterFromFilterSpec(
                        request, filterSpec);
                request = request.filterWith(filter);
            }
            return request;
        } catch (FilterNotCreatedException e) {

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  public Request filterWith(Filter filter) {
    return new FilterRequest(this, filter);
  }


  public Request filterWith(final Description desiredDescription) {
    return filterWith(new Filter() {
      @Override
      public boolean shouldRun(Description description) {
        // TODO: test for equality even if we have children?
        if (description.isTest())
          return desiredDescription.equals(description);

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      }
    }


    public LuceneTestCaseRunner(Class<?> clazz) throws InitializationError {
      super(clazz);
      Filter f = new Filter() {


        @Override
        public String describe() { return "filters according to TEST_METHOD"; }


        @Override
        public boolean shouldRun(Description d) {
          return TEST_METHOD == null || d.getMethodName().equals(TEST_METHOD);
        }     
      };
      
      try {
        f.apply(this);
      } catch (NoTestsRemainException e) {
        throw new RuntimeException(e);
      }
    }

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