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Invoke lifecycle hooks around each dynamic test #735

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Invoke lifecycle hooks around each dynamic test #735

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11 changes: 8 additions & 3 deletions ...upiter-engine/src/main/java/org/junit/jupiter/engine/descriptor/MethodTestDescriptor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
import java.util.List;
import java.util.Optional;
import java.util.function.BiFunction;
import java.util.function.Consumer;

import org.junit.jupiter.api.extension.AfterEachCallback;
import org.junit.jupiter.api.extension.AfterTestExecutionCallback;
Expand Down Expand Up @@ -108,6 +109,12 @@ public SkipResult shouldBeSkipped(JupiterEngineExecutionContext context) throws
@Override
public JupiterEngineExecutionContext execute(JupiterEngineExecutionContext context,
DynamicTestExecutor dynamicTestExecutor) throws Exception {
executeTestBetweenBeforeAndAfterHooks(context, c -> invokeTestMethod(c, dynamicTestExecutor));
return context;
}

protected void executeTestBetweenBeforeAndAfterHooks(JupiterEngineExecutionContext context,
Consumer<JupiterEngineExecutionContext> testExecutor) {
ThrowableCollector throwableCollector = context.getThrowableCollector();

// @formatter:off
Expand All @@ -117,7 +124,7 @@ public JupiterEngineExecutionContext execute(JupiterEngineExecutionContext conte
if (throwableCollector.isEmpty()) {
invokeBeforeTestExecutionCallbacks(context);
if (throwableCollector.isEmpty()) {
invokeTestMethod(context, dynamicTestExecutor);
testExecutor.accept(context);
}
invokeAfterTestExecutionCallbacks(context);
}
Expand All @@ -127,8 +134,6 @@ public JupiterEngineExecutionContext execute(JupiterEngineExecutionContext conte
// @formatter:on

throwableCollector.assertEmpty();

return context;
}

private void invokeBeforeEachCallbacks(JupiterEngineExecutionContext context) {
Expand Down
17 changes: 15 additions & 2 deletions ...r-engine/src/main/java/org/junit/jupiter/engine/descriptor/TestFactoryTestDescriptor.java
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Expand Up @@ -20,6 +20,7 @@
import org.junit.jupiter.api.extension.TestExtensionContext;
import org.junit.jupiter.engine.execution.ExecutableInvoker;
import org.junit.jupiter.engine.execution.JupiterEngineExecutionContext;
import org.junit.jupiter.engine.execution.ThrowableCollector;
import org.junit.platform.commons.JUnitException;
import org.junit.platform.commons.meta.API;
import org.junit.platform.commons.util.CollectionUtils;
Expand Down Expand Up @@ -68,6 +69,18 @@ public boolean isLeaf() {
return true;
}

@Override
public JupiterEngineExecutionContext execute(JupiterEngineExecutionContext context,
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Please explain in great detail the need to override the execute() method, not only here but also in the commit message.

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@ledoyen ledoyen Mar 15, 2017 •
edited
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I choose to override the execute() method here to prevent calls to before and after hooks around a container execution.
This is because a hook implementation can not know on which (of a container or a test) it is executed.
I assumed that @BeforeEach meant before each test, in this particular case, unlike what's said in the annotations javadoc.

A cleaner way can be to declare a new annotation @BeforeEachTest and let callback implementations know about the type of test (container or not).

If this is something you prefer, I can give it a try.

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Unless I'm mistaken, lifecycle callbacks currently apply to @TestFactory methods.

So it appears that you have removed this functionality, which some people may depend on.

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At the moment, no, I don't think we want to introduce any additional lifecycle annotations.

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@ledoyen ledoyen Mar 16, 2017 •
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What do you think about invoking lifecycle callbacks around @TestFactory methods and around each dynamic tests and making implementations aware of the type (container or test) they are invoked on ?
This could be done by adding an isContainer:boolean method to the TestExtensionContext like on the TestDescriptor interface.

I tried to improve the MockitoExtension by adding a reset of mocked field / parameters in Store before each test.
This is why I removed callback invocation around @TestFactory methods in favor of dynamic tests in the first place.

DynamicTestExecutor dynamicTestExecutor) throws Exception {
ThrowableCollector throwableCollector = context.getThrowableCollector();

invokeTestMethod(context, dynamicTestExecutor);

throwableCollector.assertEmpty();

return context;
}

@Override
protected void invokeTestMethod(JupiterEngineExecutionContext context, DynamicTestExecutor dynamicTestExecutor) {
TestExtensionContext testExtensionContext = (TestExtensionContext) context.getExtensionContext();
Expand All @@ -80,8 +93,8 @@ protected void invokeTestMethod(JupiterEngineExecutionContext context, DynamicTe
try (Stream<DynamicTest> dynamicTestStream = toDynamicTestStream(testExtensionContext,
testFactoryMethodResult)) {
AtomicInteger index = new AtomicInteger();
dynamicTestStream.forEach(
dynamicTest -> registerAndExecute(dynamicTest, index.incrementAndGet(), dynamicTestExecutor));
dynamicTestStream.forEach(dynamicTest -> executeTestBetweenBeforeAndAfterHooks(context,
c -> registerAndExecute(dynamicTest, index.incrementAndGet(), dynamicTestExecutor)));
}
catch (ClassCastException ex) {
throw invalidReturnTypeException(ex);
Expand Down
56 changes: 56 additions & 0 deletions ...iter-engine/src/test/java/org/junit/jupiter/engine/extension/BeforeAndAfterEachTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,17 +13,21 @@
import static java.util.Arrays.asList;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.DynamicTest.dynamicTest;
import static org.junit.platform.engine.discovery.DiscoverySelectors.selectClass;
import static org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder.request;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;

import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DynamicTest;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestFactory;
import org.junit.jupiter.api.extension.AfterEachCallback;
import org.junit.jupiter.api.extension.BeforeEachCallback;
import org.junit.jupiter.api.extension.ExtendWith;
Expand Down Expand Up @@ -151,6 +155,38 @@ public void beforeEachAndAfterEachCallbacksDeclaredOnInterfaceAndClass() {
// @formatter:on
}

@Test
public void beforeEachAndAfterEachCallbacksOnDynamicTests() {
LauncherDiscoveryRequest request = request().selectors(selectClass(DynamicTestTestCase.class)).build();

ExecutionEventRecorder eventRecorder = executeTests(request);

assertEquals(2, eventRecorder.getTestStartedCount(), "# tests started");
assertEquals(2, eventRecorder.getTestSuccessfulCount(), "# tests succeeded");
assertEquals(0, eventRecorder.getTestSkippedCount(), "# tests skipped");
assertEquals(0, eventRecorder.getTestAbortedCount(), "# tests aborted");
assertEquals(0, eventRecorder.getTestFailedCount(), "# tests failed");

// @formatter:off
assertEquals(asList(
// first dynamic test
"fooBeforeEachCallback",
"beforeEachMethod",
"localTestMethod1",
"afterEachMethod",
"fooAfterEachCallback",

// second dynamic test
"fooBeforeEachCallback",
"beforeEachMethod",
"localTestMethod2",
"afterEachMethod",
"fooAfterEachCallback"

), callSequence, "wrong call sequence");
// @formatter:on
}

@Test
public void beforeEachCallbackThrowsAnException() {
LauncherDiscoveryRequest request = request().selectors(
Expand Down Expand Up @@ -383,6 +419,26 @@ void afterEachInnerMethod() {
}
}

@ExtendWith(FooMethodLevelCallbacks.class)
private static class DynamicTestTestCase {

@BeforeEach
void beforeEach() {
callSequence.add("beforeEachMethod");
}

@TestFactory
List<DynamicTest> localTest() {
return Arrays.asList(dynamicTest("dynamicTest1", () -> callSequence.add("localTestMethod1")),
dynamicTest("dynamicTest2", () -> callSequence.add("localTestMethod2")));
}

@AfterEach
void afterEach() {
callSequence.add("afterEachMethod");
}
}

@ExtendWith({ FooMethodLevelCallbacks.class, ExceptionThrowingBeforeEachCallback.class,
BarMethodLevelCallbacks.class })
private static class ExceptionInBeforeEachCallbackTestCase {
Expand Down