Introduce getOriginalBeanName(String) in ScopedProxyUtils

This commit introduces a utility method for retrieving the original
bean name for the target of a scoped proxy.

Closes gh-23514

spring-aop/src/test/java/org/springframework/aop/scope/ScopedProxyUtilsTests.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2002-2019 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.aop.scope;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+
+/**
+ * Unit tests for {@link ScopedProxyUtils}.
+ *
+ * @author Sam Brannen
+ * @since 5.2
+ */
+class ScopedProxyUtilsTests {
+
+	@Test
+	void getTargetBeanNameAndIsScopedTarget() {
+		String originalBeanName = "myBean";
+		String targetBeanName = ScopedProxyUtils.getTargetBeanName(originalBeanName);
+
+		assertThat(targetBeanName).isNotEqualTo(originalBeanName).endsWith(originalBeanName);
+		assertThat(ScopedProxyUtils.isScopedTarget(targetBeanName)).isTrue();
+		assertThat(ScopedProxyUtils.isScopedTarget(originalBeanName)).isFalse();
+	}
+
+	@Test
+	void getOriginalBeanNameAndIsScopedTarget() {
+		String originalBeanName = "myBean";
+		String targetBeanName = ScopedProxyUtils.getTargetBeanName(originalBeanName);
+		String parsedOriginalBeanName = ScopedProxyUtils.getOriginalBeanName(targetBeanName);
+
+		assertThat(parsedOriginalBeanName).isNotEqualTo(targetBeanName).isEqualTo(originalBeanName);
+		assertThat(ScopedProxyUtils.isScopedTarget(targetBeanName)).isTrue();
+		assertThat(ScopedProxyUtils.isScopedTarget(parsedOriginalBeanName)).isFalse();
+	}
+
+	@Test
+	void getOriginalBeanNameForNullTargetBean() {
+		assertThatIllegalArgumentException()
+			.isThrownBy(() -> ScopedProxyUtils.getOriginalBeanName(null))
+			.withMessage("bean name 'null' does not refer to the target of a scoped proxy");
+	}
+
+	@Test
+	void getOriginalBeanNameForNonScopedTarget() {
+		assertThatIllegalArgumentException()
+			.isThrownBy(() -> ScopedProxyUtils.getOriginalBeanName("myBean"))
+			.withMessage("bean name 'myBean' does not refer to the target of a scoped proxy");
+	}
+
+}