Suppress rebinding of configuration properties for refresh scope

If a @ConfigurationProperties @Bean is in @RefreshScope then it doesn't
need to be rebound on an environment change event (it will re-initialize
on refresh).

See https://github.com/spring-cloud/spring-cloud-config/issues/183

spring-cloud-context/src/test/java/org/springframework/cloud/context/properties/ConfigurationPropertiesRebinderRefreshScopeIntegrationTests.java

@@ -0,0 +1,125 @@
+/*
+ * Copyright 2006-2007 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.cloud.context.properties;
+
+import static org.junit.Assert.assertEquals;
+
+import javax.annotation.PostConstruct;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.boot.test.EnvironmentTestUtils;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.cloud.autoconfigure.RefreshAutoConfiguration;
+import org.springframework.cloud.context.config.annotation.RefreshScope;
+import org.springframework.cloud.context.properties.ConfigurationPropertiesRebinderRefreshScopeIntegrationTests.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@SpringApplicationConfiguration(classes=TestConfiguration.class)
+@RunWith(SpringJUnit4ClassRunner.class)
+public class ConfigurationPropertiesRebinderRefreshScopeIntegrationTests {
+
+	@Autowired
+	private TestProperties properties;
+
+	@Autowired
+	private ConfigurationPropertiesRebinder rebinder;
+	
+	@Autowired
+	private org.springframework.cloud.context.scope.refresh.RefreshScope refreshScope;
+	
+	@Autowired
+	private ConfigurableEnvironment environment;
+
+	@Test
+	@DirtiesContext
+	public void testSimpleProperties() throws Exception {
+		assertEquals("Hello scope!", properties.getMessage());
+		// Change the dynamic property source...
+		EnvironmentTestUtils.addEnvironment(environment, "message:Foo");
+		// ...but don't refresh, so the bean stays the same:
+		assertEquals("Hello scope!", properties.getMessage());
+		assertEquals(1, properties.getCount());
+	}
+
+	@Test
+	@DirtiesContext
+	public void testRefresh() throws Exception {
+		assertEquals(1, properties.getCount());
+		assertEquals("Hello scope!", properties.getMessage());
+		assertEquals(1, properties.getCount());
+		// Change the dynamic property source...
+		EnvironmentTestUtils.addEnvironment(environment, "message:Foo");
+		// ...rebind, but the bean is not re-initialized:
+		rebinder.rebind();
+		assertEquals("Hello scope!", properties.getMessage());
+		assertEquals(1, properties.getCount());
+		// ...and then refresh, so the bean is re-initialized:
+		refreshScope.refreshAll();
+		assertEquals("Foo", properties.getMessage());
+		// It's a new instance so the initialization count is 1
+		assertEquals(1, properties.getCount());
+	}
+	
+	@Configuration
+	@EnableConfigurationProperties
+	@Import({RefreshAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class})
+	protected static class TestConfiguration {
+		
+		@Bean
+		@RefreshScope
+		protected TestProperties properties() {
+			return new TestProperties();
+		}
+		
+	}
+
+	@ConfigurationProperties
+	protected static class TestProperties {
+		private String message;
+		private int delay;
+		private int count = 0;
+		public int getCount() {
+			return count;
+		}
+		public String getMessage() {
+			return message;
+		}
+		public void setMessage(String message) {
+			this.message = message;
+		}
+		public int getDelay() {
+			return delay;
+		}
+		public void setDelay(int delay) {
+			this.delay = delay;
+		}
+		@PostConstruct
+		public void init() {
+			this.count ++;
+		}
+	}
+	
+}