Add AopAutoConfiguration (also starter and sample)

A side effect is that spring-boot-starter-data-jpa needs
to include an aspectjweaver depdendency. Hope that doesn't
hurt anything else.

[Fixes #56780004]

spring-boot-samples/spring-boot-sample-aop/src/test/java/org/springframework/boot/sample/aop/SampleAopApplicationTests.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2012-2013 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.boot.sample.aop;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.springframework.boot.OutputCapture;
+import org.springframework.boot.sample.aop.SampleAopApplication;
+
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Tests for {@link SampleAopApplication}.
+ * 
+ * @author Dave Syer
+ * @author Phillip Webb
+ */
+public class SampleAopApplicationTests {
+
+	@Rule
+	public OutputCapture outputCapture = new OutputCapture();
+
+	private String profiles;
+
+	@Before
+	public void init() {
+		this.profiles = System.getProperty("spring.profiles.active");
+	}
+
+	@After
+	public void after() {
+		if (this.profiles != null) {
+			System.setProperty("spring.profiles.active", this.profiles);
+		}
+		else {
+			System.clearProperty("spring.profiles.active");
+		}
+	}
+
+	@Test
+	public void testDefaultSettings() throws Exception {
+		SampleAopApplication.main(new String[0]);
+		String output = this.outputCapture.toString();
+		assertTrue("Wrong output: " + output, output.contains("Hello Phil"));
+	}
+
+	@Test
+	public void testCommandLineOverrides() throws Exception {
+		SampleAopApplication.main(new String[] { "--name=Gordon" });
+		String output = this.outputCapture.toString();
+		assertTrue("Wrong output: " + output, output.contains("Hello Gordon"));
+	}
+
+}