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testing JUnit 5 equivalent of XpectRunner
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17 changes: 17 additions & 0 deletions
17
org.eclipse.xpect/src/org/eclipse/xpect/dynamic/IXpectDynamicTestFactory.java
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| @@ -0,0 +1,17 @@ | ||
| package org.eclipse.xpect.dynamic; | ||
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| import java.util.stream.Stream; | ||
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| import org.eclipse.xpect.XpectImport; | ||
| import org.eclipse.xpect.runner.TestTitleProvider; | ||
| import org.junit.jupiter.api.DynamicContainer; | ||
| import org.junit.jupiter.api.TestFactory; | ||
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| @XpectImport(TestTitleProvider.class) | ||
| public interface IXpectDynamicTestFactory { | ||
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| @TestFactory | ||
| default Stream<DynamicContainer> generateTests() { | ||
| return XpectDynamicTestFactory.xpectTests(getClass()); | ||
| } | ||
| } |
64 changes: 64 additions & 0 deletions
64
org.eclipse.xpect/src/org/eclipse/xpect/dynamic/XpectDynamicTest.java
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| @@ -0,0 +1,64 @@ | ||
| package org.eclipse.xpect.dynamic; | ||
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| import java.lang.reflect.InvocationTargetException; | ||
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| import org.eclipse.xpect.XjmTestMethod; | ||
| import org.eclipse.xpect.runner.ValidatingSetup; | ||
| import org.eclipse.xpect.runner.XpectTestGlobalState; | ||
| import org.eclipse.xpect.setup.ThisTestObject; | ||
| import org.eclipse.xpect.state.Creates; | ||
| import org.eclipse.xpect.state.StateContainer; | ||
| import org.junit.jupiter.api.DynamicTest; | ||
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| import com.google.common.base.Preconditions; | ||
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| public class XpectDynamicTest { | ||
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| private final String className; | ||
| private XjmTestMethod method; | ||
| private final StateContainer state; | ||
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| public XpectDynamicTest(StateContainer state, XjmTestMethod method) { | ||
| Preconditions.checkNotNull(method); | ||
| this.className = XpectTestGlobalState.INSTANCE.testClass().getName(); | ||
| this.method = method; | ||
| this.state = state; | ||
| } | ||
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| @Creates | ||
| public XpectDynamicTest create() { | ||
| return this; | ||
| } | ||
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| public XjmTestMethod getMethod() { | ||
| return method; | ||
| } | ||
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| public StateContainer getState() { | ||
| return state; | ||
| } | ||
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| public DynamicTest test() { | ||
| String testName = getName(); | ||
| return DynamicTest.dynamicTest(testName, () -> runInternal()); | ||
| } | ||
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| public String getName() { | ||
| String testName = formatDisplayName(method.getName(), className); | ||
| return testName; | ||
| } | ||
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| protected void runInternal() throws Throwable { | ||
| Object test = state.get(Object.class, ThisTestObject.class).get(); | ||
| try { | ||
| method.getJavaMethod().invoke(test); | ||
| } catch (InvocationTargetException e) { | ||
| throw e.getCause(); | ||
| } | ||
| } | ||
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| private static String formatDisplayName(String name, String className) { | ||
| return String.format("%s(%s)", name, className); | ||
| } | ||
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| } |
181 changes: 181 additions & 0 deletions
181
org.eclipse.xpect/src/org/eclipse/xpect/dynamic/XpectDynamicTestCase.java
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| package org.eclipse.xpect.dynamic; | ||
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| import java.util.Collection; | ||
| import java.util.List; | ||
| import java.util.concurrent.atomic.AtomicBoolean; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
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| import org.eclipse.emf.common.util.URI; | ||
| import org.eclipse.xpect.XjmMethod; | ||
| import org.eclipse.xpect.XjmTestMethod; | ||
| import org.eclipse.xpect.XpectFile; | ||
| import org.eclipse.xpect.XpectInvocation; | ||
| import org.eclipse.xpect.XpectJavaModel; | ||
| import org.eclipse.xpect.runner.IXpectURIProvider; | ||
| import org.eclipse.xpect.runner.TestExecutor; | ||
| import org.eclipse.xpect.runner.ValidatingSetup; | ||
| import org.eclipse.xpect.setup.ThisRootTestClass; | ||
| import org.eclipse.xpect.state.Creates; | ||
| import org.eclipse.xpect.state.StateContainer; | ||
| import org.junit.jupiter.api.DynamicContainer; | ||
| import org.junit.jupiter.api.DynamicTest; | ||
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| import com.google.common.collect.Iterables; | ||
| import com.google.common.collect.Lists; | ||
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| public class XpectDynamicTestCase { | ||
| private List<DynamicTest> children; | ||
| private final StateContainer state; | ||
| private final XpectFile xpectFile; | ||
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| public XpectDynamicTestCase(StateContainer state, XpectFile file) { | ||
| this.xpectFile = file; | ||
| this.state = state; | ||
| } | ||
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| @Creates | ||
| public XpectDynamicTestCase create() { | ||
| return this; | ||
| } | ||
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| /** | ||
| * <p> | ||
| * To run code before an Xpect test begins, extend this class and annotate the extending class with: | ||
| * {@code @org.eclipse.xpect.XpectReplace(org.eclipse.xpect.dynamic.XpectDynamicTestCase)} | ||
| * </p> | ||
| * <p> | ||
| * The extended class must then be included in the values of the annotation of the test case: | ||
| * {@code @org.eclipse.xpect.XpectImport({...class})} | ||
| * </p> | ||
| */ | ||
| public void setUp() throws Throwable { | ||
| // nothing to set up | ||
| } | ||
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| /** | ||
| * <p> | ||
| * To run code after an Xpect test finishes, extend this class and annotate the extending class with: | ||
| * {@code @org.eclipse.xpect.XpectReplace(org.eclipse.xpect.dynamic.XpectDynamicTestCase)} | ||
| * </p> | ||
| * <p> | ||
| * The extended class must then be included in the values of the annotation of the test case: | ||
| * {@code @org.eclipse.xpect.XpectImport({...class})} | ||
| * </p> | ||
| */ | ||
| public void tearDown() throws Throwable { | ||
| // nothing to tear down | ||
| } | ||
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| public DynamicContainer dynamicContainer() { | ||
| return DynamicContainer.dynamicContainer(getName(), getChildren()); | ||
| } | ||
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| protected List<DynamicTest> createChildren() { | ||
| List<DynamicTest> children = Lists.newArrayList(); | ||
| if (xpectFile != null) { | ||
| /* | ||
| * With JUnit 4 runners, we can do setup validation before children run and state clean-up after children are done. | ||
| * With JUnit 5 we cannot. | ||
| * So the first test does setup validation and the last test does clean-up. | ||
| * Meaning their execution times will likely increase notably, when compared to the JUnit 4 reported time. | ||
| * Alternatively we can add a first and last test, for setup validation resp. clean-up. This means extra test nodes in the result, as well as extra test results. We then also have the problem of running tests if the setup validation failed. | ||
| * XXX: does JUnit 5 offer anything for dynamic tests, to improve this situation? | ||
| * As of writing this code, @BeforeEach and @AfterEach are only called before and after the factory method runs. | ||
| * We have a factory method with every URL we must run an Xpect test for, as those URLs are known only via an annotation. | ||
| */ | ||
| AtomicBoolean setupValidated = new AtomicBoolean(false); | ||
| AtomicBoolean setupValidationFailed = new AtomicBoolean(false); | ||
| AtomicInteger finishedChildren = new AtomicInteger(0); | ||
| XpectJavaModel xjm = xpectFile.getJavaModel(); | ||
| XjmTestMethod[] methods = xjm.getMethods().values().stream().filter(m -> m instanceof XjmTestMethod).toArray(XjmTestMethod[]::new); | ||
| XpectInvocation[] invocations = Iterables.toArray(xpectFile.getInvocations(), XpectInvocation.class); | ||
| int childrenCount = methods.length + invocations.length; | ||
| for (XjmTestMethod method : methods) { | ||
| DynamicTest test = createDynamicTest(method); | ||
| children.add(wrapTest(test, childrenCount, setupValidated, setupValidationFailed, finishedChildren)); | ||
| } | ||
| for (XpectInvocation inv : invocations) { | ||
| DynamicTest test = createDynamicTest(inv); | ||
| children.add(wrapTest(test, childrenCount, setupValidated, setupValidationFailed, finishedChildren)); | ||
| } | ||
| } | ||
| return children; | ||
| } | ||
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| protected DynamicTest createDynamicTest(XjmTestMethod method) { | ||
| StateContainer childState = TestExecutor.createState(state, TestExecutor.createTestConfiguration(method)); | ||
| return childState.get(XpectDynamicTest.class).get().test(); | ||
| } | ||
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| protected DynamicTest createDynamicTest(XpectInvocation invocation) { | ||
| StateContainer childState = TestExecutor.createState(state, TestExecutor.createXpectConfiguration(invocation)); | ||
| DynamicTest test = childState.get(XpectInvocationDynamicTest.class).get().test(); | ||
| return test; | ||
| } | ||
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| protected DynamicTest wrapTest(DynamicTest test, final int childrenCount, AtomicBoolean validatedSetup, AtomicBoolean setupValidationFailed, AtomicInteger finishedChildren) { | ||
| return DynamicTest.dynamicTest(test.getDisplayName(), () -> { | ||
| try { | ||
| if (!validatedSetup.getAndSet(true)) { | ||
| // first test is running, validate setup | ||
| try { | ||
| state.get(ValidatingSetup.class).get().validate(); | ||
| } catch (Throwable t) { | ||
| setupValidationFailed.set(true); | ||
| throw t; | ||
| } | ||
| } | ||
| if (setupValidationFailed.get()) { | ||
| throw new AssertionError("Setup validation failed"); | ||
| } | ||
| try { | ||
| setUp(); | ||
| test.getExecutable().execute(); | ||
| } finally { | ||
| tearDown(); | ||
| } | ||
| } finally { | ||
| int finished = finishedChildren.incrementAndGet(); | ||
| if (finished >= childrenCount) { | ||
| // last test is done, do clean-up | ||
| state.invalidate(); | ||
| } | ||
| } | ||
| }); | ||
| } | ||
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| protected List<DynamicTest> getChildren() { | ||
| if (children == null) | ||
| children = createChildren(); | ||
| return children; | ||
| } | ||
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| public Class<?> getJavaTestClass() { | ||
| return state.get(Class.class, ThisRootTestClass.class).get(); | ||
| } | ||
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| public IXpectURIProvider getURIProvider() { | ||
| return state.get(IXpectURIProvider.class).get(); | ||
| } | ||
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| public StateContainer getState() { | ||
| return state; | ||
| } | ||
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| public URI getUri() { | ||
| return xpectFile.eResource().getURI(); | ||
| } | ||
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| public XpectFile getXpectFile() { | ||
| return xpectFile; | ||
| } | ||
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| public String getName() { | ||
| IXpectURIProvider uriProvider = getURIProvider(); | ||
| URI uri = getUri(); | ||
| URI deresolved = uriProvider.deresolveToProject(uri); | ||
| String pathInProject = deresolved.trimSegments(1).toString(); | ||
| String fileName = deresolved.lastSegment(); | ||
| return fileName + ": " + pathInProject; | ||
| } | ||
| } |
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