title: Disable spring boot starter Cassandra for unit testing
body: <p>I need to use Cassandra in a project with the following gradle dependecy:</p>
  
  <pre><code>compile "org.springframework.boot:spring-boot-starter-data-cassandra"
  </code></pre>
  
  <p>The problem is that although Cassandra AutoConfiguration classes are marked to be excluded from a unit test, Somehow spring still tries to instantiate classes related to this dependancy.</p>
  
  <p>Here is my unit test:</p>
  
  <pre><code>import org.junit.Assert;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
  import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
  import org.springframework.boot.test.context.SpringBootTest;
  import org.springframework.test.context.junit4.SpringRunner;
  import org.springframework.test.web.servlet.MockMvc;
  import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
  import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
  
  @RunWith( SpringRunner.class )
  @SpringBootTest
  @AutoConfigureMockMvc
  @EnableAutoConfiguration( exclude = {
          org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration.class,
          org.springframework.boot.autoconfigure.data.cassandra.CassandraDataAutoConfiguration.class
  } )
  public class HealthTest {
  
      @Autowired
      private MockMvc mockMvc;
  
  
      @Test
      public void contextLoads() {
          Assert.assertNotNull( mockMvc );
      }
  
      @Test
      public void healthControllerIsUp() throws Exception {
          mockMvc.perform( MockMvcRequestBuilders.get( "/health" ) )
                  .andExpect( MockMvcResultMatchers.status().isOk() );
      }
  }
  </code></pre>
  
  <p>and this is the error I get, apparently because Spring cannot instantiate <strong>cluster</strong> object.</p>
  
  <pre><code>java.lang.IllegalStateException: Failed to load ApplicationContext
  
      at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
      at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
      at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:189)
      at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:131)
      at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:230)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:228)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:287)
      at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:289)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:247)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
      at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
      at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
      at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
      at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
      at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
      at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
      at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
      at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
      at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
      at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
      at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
      at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
      at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
      at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
  Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cluster' defined in class path resource [org/springframework/boot/autoconfigure/cassandra/CassandraAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.datastax.driver.core.Cluster]: Factory method 'cluster' threw exception; nested exception is java.lang.NoClassDefFoundError: com/google/common/util/concurrent/FutureFallback
      at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
      at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
      at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
      at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:120)
      at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
      at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
      ... 24 more
  Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.datastax.driver.core.Cluster]: Factory method 'cluster' threw exception; nested exception is java.lang.NoClassDefFoundError: com/google/common/util/concurrent/FutureFallback
      at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
      at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
      ... 41 more
  Caused by: java.lang.NoClassDefFoundError: com/google/common/util/concurrent/FutureFallback
      at org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration.cluster(CassandraAutoConfiguration.java:66)
      at org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration$$EnhancerBySpringCGLIB$$7c58ae77.CGLIB$cluster$0(&lt;generated&gt;)
      at org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration$$EnhancerBySpringCGLIB$$7c58ae77$$FastClassBySpringCGLIB$$fb4ab05b.invoke(&lt;generated&gt;)
      at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
      at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358)
      at org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration$$EnhancerBySpringCGLIB$$7c58ae77.cluster(&lt;generated&gt;)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:498)
      at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
      ... 42 more
  Caused by: java.lang.ClassNotFoundException: com.google.common.util.concurrent.FutureFallback
      at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
      ... 53 more
  </code></pre>
  
  <p>Looking into <strong>CassandraAutoConfiguration</strong> class, This class is annotated as following: </p>
  
  <pre><code>@Configuration
  @ConditionalOnClass({ Cluster.class })
  @EnableConfigurationProperties(CassandraProperties.class)
  public class CassandraAutoConfiguration
  </code></pre>
  
  <p>I am looking for a clean way how to get around this without having to configure Cassandra on each test that has nothing to do with Cassandra.</p>