java - 执行单个测试时 Eclipse 和 JUNIT4 的初始化错误

Question

我的测试类是这个:

    /**
     * The Class TestAddSubscriber.
     */
    @RunWith(LabelledParameterized.class)
    public class TestAddSubscriber extends AbstractTestSubscriber {

        /**
         * Instantiates a new test add subscriber.
         * 
         * @param label
         *            the label
         * @param apiKey
         *            the api key
         * @param userKey
         *            the user key
         * @param customerId
         *            the customer id
         */
        public TestAddSubscriber(String label, String apiKey, String userKey,
                int customerId) {
            super(label, apiKey, userKey, customerId);
        }

        /**
         * @see com.contactlab.api.test.AbstractTest#setUp()
         */
        @Override
        @Before
        public void setUp() throws Exception {
            super.setUp();
        }

        /**
         * @see com.contactlab.api.test.AbstractTest#tearDown()
         */
        @Override
        @After
        public void tearDown() throws Exception {
            super.tearDown();
        }

        /**
         * Generated data.
         * 
         * @return the collection
         */
        @Parameters
        public static Collection<Object[]> generatedData() {
            return DataProvider.generatedCorrectSubscriberData();
        }

        /**
         * Test add subscriber with internal pk id case sensitive.
         * 
         * @outcome: success
         * @expected: success
         * @obtained: success
         */
        @Test
        public void testAddSubscriberWithInternalPkIdCaseSensitive() {

  /** this is the test **/

        }

    /**
    * other tests
    **/
    }

如果我执行测试套件我没有问题但是如果只突出显示其中一个并运行它我有 Unrooted Tests -> InitializationError

该类使用Parameterized。

异常(exception)情况是:

TestAddSubscriber.testAddSubscriberWithInternalPkIdCaseSensitive
Unrooted Tests
initializationError(org.junit.runner.manipulation.Filter)
java.lang.Exception: No tests found matching Method testAddSubscriberWithInternalPkIdCaseSensitive(com.contactlab.api.test.subscriber.TestAddSubscriber) from org.junit.internal.requests.ClassRequest@18872380
    at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:37)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.<init>(JUnit4TestReference.java:33)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestMethodReference.<init>(JUnit4TestMethodReference.java:25)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:54)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:452)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

我做错了什么吗？

Answer 1

您可以通过扩展参数化覆盖 org.junit.runners.ParentRunner#filter 来解决问题

public class IDECompatibleParameterized extends Parameterized {

    public void filter(Filter filter) throws NoTestsRemainException {
        super.filter(new FilterDecorator(filter));
    }

   /**
     * Running single test in case of parameterized test causes issue as explained in
     * http://youtrack.jetbrains.com/issue/IDEA-65966
     *
     * As a workaround we wrap the original filter and then pass it a wrapped description
     * which removes the parameter part (See deparametrizedName)
     */
    private static class FilterDecorator extends Filter {
        private final Filter delegate;

        private FilterDecorator(Filter delegate) {
            this.delegate = delegate;
        }

        @Override
        public boolean shouldRun(Description description) {
            return delegate.shouldRun(wrap(description));
        }

        @Override
        public String describe() {
            return delegate.describe();
        }
    }

    private static Description wrap(Description description) {
        String name = description.getDisplayName();
        String fixedName = deparametrizedName(name);
        Description clonedDescription =
                Description.createSuiteDescription(fixedName,description.getAnnotations().toArray(new Annotation[0]));
        for(Description child : description.getChildren()){
            clonedDescription.addChild(wrap(child));
        }
        return clonedDescription;
    }

    private static String deparametrizedName(String name) {
        //Each parameter is named as [0], [1] etc
        if(name.startsWith("[")){
            return name;
        }

        //Convert methodName[index](className) to
        //methodName(className)
        int indexOfOpenBracket = name.indexOf('[');
        int indexOfCloseBracket = name.indexOf(']')+1;
        return name.substring(0,indexOfOpenBracket).concat(name.substring(indexOfCloseBracket));
    }
}

另一种方法是更改​​ Launch 配置中的方法名称，使其参数名称类似于 testAddSubscriberWithInternalPkIdCaseSensitive[0]