Merging #1762 into master

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/RibbonAutoConfiguration.java

@@ -55,7 +55,7 @@ import com.netflix.ribbon.Ribbon;
  * @author Dave Syer
  */
 @Configuration
-@ConditionalOnClass({ IClient.class, RestTemplate.class, AsyncRestTemplate.class})
+@ConditionalOnClass({ IClient.class, RestTemplate.class, AsyncRestTemplate.class, Ribbon.class})
 @RibbonClients
 @AutoConfigureAfter(name = "org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration")
 @AutoConfigureBefore({LoadBalancerAutoConfiguration.class, AsyncLoadBalancerAutoConfiguration.class})

spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/ribbon/RibbonDisabledTests.java

@@ -0,0 +1,39 @@
+/*
+ *
+ *  * Copyright 2013-2016 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.netflix.ribbon;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.cloud.ClassPathExclusions;
+import org.springframework.cloud.FilteredClassPathRunner;
+
+/**
+ * @author Ryan Baxter
+ */
+@RunWith(FilteredClassPathRunner.class)
+@ClassPathExclusions({"ribbon-{version:\\d.*}.jar"})
+public class RibbonDisabledTests {
+
+	@Test(expected = ArrayStoreException.class)
+	public void testRibbonDisabled() {
+		new SpringApplicationBuilder().web(false)
+				.sources(RibbonAutoConfiguration.class).run();
+	}
+}