Simplify @EneabledIfRuntimeHintsAgent support

Since the RuntimeHintsAgentCondition is based solely on the result of
invoking a boolean static method, there is no need to implement a custom
ExecutionCondition. For such use cases, the @EnabledIf support in JUnit
Jupiter is sufficient.

This commit therefore replaces the custom RuntimeHintsAgentCondition
with use of @EnabledIf as a meta-annotation.

spring-core-test/src/main/java/org/springframework/aot/test/agent/EnabledIfRuntimeHintsAgent.java

@@ -22,8 +22,7 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
-import org.junit.jupiter.api.Tag;
-import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.api.condition.EnabledIf;
 
 import org.springframework.aot.agent.RuntimeHintsAgent;
 
@@ -51,13 +50,13 @@ import org.springframework.aot.agent.RuntimeHintsAgent;
  * </pre>
  *
  * @author Brian Clozel
+ * @author Sam Brannen
  * @since 6.0
  */
 @Target({ElementType.TYPE, ElementType.METHOD})
 @Retention(RetentionPolicy.RUNTIME)
 @Documented
-@ExtendWith(RuntimeHintsAgentCondition.class)
-@Tag("RuntimeHintsTests")
+@EnabledIf(value = "org.springframework.aot.agent.RuntimeHintsAgent#isLoaded",
+		disabledReason = "RuntimeHintsAgent is not loaded on the current JVM")
 public @interface EnabledIfRuntimeHintsAgent {
-
 }

spring-core-test/src/main/java/org/springframework/aot/test/agent/RuntimeHintsAgentCondition.java

@@ -1,47 +0,0 @@
-/*
- * Copyright 2002-2022 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.springframework.aot.test.agent;
-
-import org.junit.jupiter.api.extension.ConditionEvaluationResult;
-import org.junit.jupiter.api.extension.ExecutionCondition;
-import org.junit.jupiter.api.extension.ExtensionContext;
-
-import org.springframework.aot.agent.RuntimeHintsAgent;
-
-import static org.junit.platform.commons.support.AnnotationSupport.findAnnotation;
-
-/**
- * {@link ExecutionCondition} for {@link EnabledIfRuntimeHintsAgent @EnabledIfRuntimeHintsAgent}.
- *
- * @author Brian Clozel
- * @since 6.0
- */
-class RuntimeHintsAgentCondition implements ExecutionCondition {
-
-	@Override
-	public ConditionEvaluationResult evaluateExecutionCondition(ExtensionContext context) {
-		return findAnnotation(context.getElement(), EnabledIfRuntimeHintsAgent.class)
-				.map(annotation -> checkRuntimeHintsAgentPresence())
-				.orElse(ConditionEvaluationResult.enabled("@EnabledIfRuntimeHintsAgent is not present"));
-	}
-
-	static ConditionEvaluationResult checkRuntimeHintsAgentPresence() {
-		return RuntimeHintsAgent.isLoaded() ? ConditionEvaluationResult.enabled("RuntimeHintsAgent is loaded")
-				: ConditionEvaluationResult.disabled("RuntimeHintsAgent is not loaded on the current JVM");
-	}
-
-}