Introspect originating bean definition as configuration class candidate

Issue: SPR-16756

spring-context/src/test/java/org/springframework/context/annotation/spr16756/ScannedComponent.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2002-2018 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
+ *
+ *      http://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.context.annotation.spr16756;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ScannedComponent {
+
+	@Autowired
+	private State state;
+
+	public String iDoAnything() {
+		return state.anyMethod();
+	}
+
+
+	public interface State {
+
+		String anyMethod();
+	}
+
+
+	@Component
+	@Scope(proxyMode = ScopedProxyMode.INTERFACES, value = "prototype")
+	public static class StateImpl implements State {
+
+		public String anyMethod() {
+			return "anyMethod called";
+		}
+	}
+
+}

spring-context/src/test/java/org/springframework/context/annotation/spr16756/ScanningConfiguration.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2002-2018 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
+ *
+ *      http://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.context.annotation.spr16756;
+
+import org.springframework.context.annotation.ComponentScan;
+
+@ComponentScan
+public class ScanningConfiguration {
+
+}

spring-context/src/test/java/org/springframework/context/annotation/spr16756/Spr16756Tests.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2002-2018 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
+ *
+ *      http://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.context.annotation.spr16756;
+
+import org.junit.Test;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+/**
+ * @author Juergen Hoeller
+ */
+public class Spr16756Tests {
+
+	@Test
+	public void shouldNotFailOnNestedScopedComponent() {
+		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
+		context.register(ScanningConfiguration.class);
+		context.refresh();
+		context.getBean(ScannedComponent.class);
+		context.getBean(ScannedComponent.State.class);
+	}
+
+}