Fix compiler warnings

spring-cloud-context/src/test/java/org/springframework/cloud/autoconfigure/RefreshAutoConfigurationMoreClassPathTests.java

@@ -3,11 +3,11 @@ package org.springframework.cloud.autoconfigure;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+
 import org.springframework.boot.WebApplicationType;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.builder.SpringApplicationBuilder;
 import org.springframework.boot.test.rule.OutputCapture;
-import org.springframework.cloud.endpoint.event.RefreshEventListener;
 import org.springframework.cloud.test.ClassPathExclusions;
 import org.springframework.cloud.test.ModifiedClassPathRunner;
 import org.springframework.context.ConfigurableApplicationContext;

spring-cloud-context/src/test/java/org/springframework/cloud/context/refresh/ContextRefresherTests.java

@@ -118,7 +118,6 @@ public class ContextRefresherTests {
 	}
 
 	@Test
-	@SuppressWarnings("unchecked")
 	public void commandLineArgsPassedToBootstrapConfiguration() {
 
 		TestBootstrapConfiguration.fooSightings = new ArrayList<>();

spring-cloud-context/src/test/java/org/springframework/cloud/context/scope/refresh/RefreshScopeNullBeanIntegrationTests.java

@@ -43,7 +43,8 @@ public class RefreshScopeNullBeanIntegrationTests {
 	@Test
 	@DirtiesContext
 	public void testRefreshBean() {
-		assertThat(this.myCustomComponent).isNotNull();
+		assertThat(this.myCustomComponent.optionalService).isNotNull();
+		assertThat(this.scope).isNotNull();
 		// ...and then refresh, so the bean is re-initialized:
 		// this.scope.refreshAll();
 	}

spring-cloud-context/src/test/java/org/springframework/cloud/health/RefreshScopeHealthIndicatorTests.java

@@ -21,6 +21,7 @@ import java.util.Collections;
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.BDDMockito;
+
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.boot.actuate.health.Status;
 import org.springframework.cloud.context.properties.ConfigurationPropertiesRebinder;
@@ -35,6 +36,7 @@ import static org.mockito.Mockito.when;
  */
 public class RefreshScopeHealthIndicatorTests {
 
+	@SuppressWarnings("unchecked")
 	private ObjectProvider<RefreshScope> scopeProvider = mock(ObjectProvider.class);
 	private ConfigurationPropertiesRebinder rebinder =
 			mock(ConfigurationPropertiesRebinder.class);