Avoid searching for the annotation twice.

Issue: junit-team#2677

junit-jupiter-engine/src/main/java/org/junit/jupiter/engine/descriptor/JupiterTestDescriptor.java

@@ -188,17 +188,18 @@ public static ExecutionMode toExecutionMode(org.junit.jupiter.api.parallel.Execu
 
 	Set<ExclusiveResource> getExclusiveResourcesFromAnnotation(AnnotatedElement element,
 			Function<ResourceLocksProvider, Set<ResourceLocksProvider.Lock>> providerToLocks) {
+		List<ResourceLock> resourceLocks = findRepeatableAnnotations(element, ResourceLock.class);
 		// @formatter:off
 		return Stream.concat(
-				getExclusiveResourcesFromAnnotationValue(element),
-				getExclusiveResourcesFromAnnotationProviders(element, providerToLocks)
+				getExclusiveResourcesFromValues(resourceLocks),
+				getExclusiveResourcesFromProviders(resourceLocks, providerToLocks)
 		).collect(collectingAndThen(toSet(), Collections::unmodifiableSet));
 		// @formatter:on
 	}
 
-	Stream<ExclusiveResource> getExclusiveResourcesFromAnnotationValue(AnnotatedElement element) {
+	Stream<ExclusiveResource> getExclusiveResourcesFromValues(List<ResourceLock> resourceLocks) {
 		// @formatter:off
-		return findRepeatableAnnotations(element, ResourceLock.class).stream()
+		return resourceLocks.stream()
 				.flatMap(resourceLock -> {
 					if (StringUtils.isBlank(resourceLock.value())) {
 						return Stream.empty();
@@ -208,10 +209,10 @@ Stream<ExclusiveResource> getExclusiveResourcesFromAnnotationValue(AnnotatedElem
 		// @formatter:on
 	}
 
-	Stream<ExclusiveResource> getExclusiveResourcesFromAnnotationProviders(AnnotatedElement element,
+	Stream<ExclusiveResource> getExclusiveResourcesFromProviders(List<ResourceLock> resourceLocks,
 			Function<ResourceLocksProvider, Set<ResourceLocksProvider.Lock>> providerToLocks) {
 		// @formatter:off
-		return findRepeatableAnnotations(element, ResourceLock.class).stream()
+		return resourceLocks.stream()
 				.flatMap(resourceLock -> Stream.of(resourceLock.providers())
 						.map(ReflectionUtils::newInstance)
 						.map(providerToLocks)

junit-jupiter-engine/src/main/java/org/junit/jupiter/engine/descriptor/MethodBasedTestDescriptor.java

@@ -14,6 +14,7 @@
 import static java.util.stream.Collectors.toSet;
 import static org.apiguardian.api.API.Status.INTERNAL;
 import static org.junit.jupiter.engine.descriptor.DisplayNameUtils.determineDisplayNameForMethod;
+import static org.junit.platform.commons.support.AnnotationSupport.findRepeatableAnnotations;
 import static org.junit.platform.commons.util.CollectionUtils.forEachInReverseOrder;
 
 import java.lang.reflect.Method;
@@ -29,6 +30,7 @@
 import org.apiguardian.api.API;
 import org.junit.jupiter.api.extension.ExtensionContext;
 import org.junit.jupiter.api.extension.TestWatcher;
+import org.junit.jupiter.api.parallel.ResourceLock;
 import org.junit.jupiter.api.parallel.ResourceLocksProvider;
 import org.junit.jupiter.engine.config.JupiterConfiguration;
 import org.junit.jupiter.engine.execution.JupiterEngineExecutionContext;
@@ -91,18 +93,18 @@ public Set<ExclusiveResource> getExclusiveResources() {
 		Function<ResourceLocksProvider, Set<ResourceLocksProvider.Lock>> providerToLocks =
 				p -> p.provideForMethod(getTestClass(), getTestMethod());
 
-		Set<ExclusiveResource> fromMethodLevelAnnotation = getExclusiveResourcesFromAnnotation(
+		Set<ExclusiveResource> fromMethodAnnotation = getExclusiveResourcesFromAnnotation(
 				getTestMethod(),
 				providerToLocks
 		);
-		Stream<ExclusiveResource> fromProvidersInClassLevelAnnotation = getExclusiveResourcesFromAnnotationProviders(
-				getTestClass(),
+		Stream<ExclusiveResource> fromProvidersInClassAnnotation = getExclusiveResourcesFromProviders(
+				findRepeatableAnnotations(getTestClass(), ResourceLock.class),
 				providerToLocks
 		);
 
 		return Stream.concat(
-				fromMethodLevelAnnotation.stream(),
-				fromProvidersInClassLevelAnnotation
+				fromMethodAnnotation.stream(),
+				fromProvidersInClassAnnotation
 		).collect(collectingAndThen(toSet(), Collections::unmodifiableSet));
 		// @formatter:on
 	}