package junit.framework; import java.util.List; import org.junit.Ignore; import org.junit.runner.Describable; import org.junit.runner.Description; import org.junit.runner.Request; import org.junit.runner.Runner; import org.junit.runner.manipulation.Filter; import org.junit.runner.manipulation.Filterable; import org.junit.runner.manipulation.NoTestsRemainException; import org.junit.runner.manipulation.Sortable; import org.junit.runner.manipulation.Sorter; /** * The JUnit4TestAdapter enables running JUnit-4-style tests using a JUnit-3-style test runner. * * <p> To use it, add the following to a test class: * <pre> public static Test suite() { return new JUnit4TestAdapter(<em>YourJUnit4TestClass</em>.class); } </pre> */ public class JUnit4TestAdapter implements Test, Filterable, Sortable, Describable { private final Class<?> fNewTestClass; private final Runner fRunner; private final JUnit4TestAdapterCache fCache; public JUnit4TestAdapter(Class<?> newTestClass) { this(newTestClass, JUnit4TestAdapterCache.getDefault()); } public JUnit4TestAdapter(final Class<?> newTestClass, JUnit4TestAdapterCache cache) { fCache = cache; fNewTestClass = newTestClass; fRunner = Request.classWithoutSuiteMethod(newTestClass).getRunner(); } public int countTestCases() { return fRunner.testCount(); } public void run(TestResult result) { fRunner.run(fCache.getNotifier(result, this)); } // reflective interface for Eclipse public List<Test> getTests() { return fCache.asTestList(getDescription()); } // reflective interface for Eclipse public Class<?> getTestClass() { return fNewTestClass; } public Description getDescription() { Description description = fRunner.getDescription(); return removeIgnored(description); } private Description removeIgnored(Description description) { if (isIgnored(description)) { return Description.EMPTY; } Description result = description.childlessCopy(); for (Description each : description.getChildren()) { Description child = removeIgnored(each); if (!child.isEmpty()) { result.addChild(child); } } return result; } private boolean isIgnored(Description description) { return description.getAnnotation(Ignore.class) != null; } @Override public String toString() { return fNewTestClass.getName(); } public void filter(Filter filter) throws NoTestsRemainException { filter.apply(fRunner); } public void sort(Sorter sorter) { sorter.apply(fRunner); } }