Check if redis available before looking up its version.

See spring-projects#654

Author: christophstrobl

redis/util/src/main/java/example/springdata/redis/test/condition/EnabledOnCommand.java

@@ -36,7 +36,8 @@
 @Retention(RetentionPolicy.RUNTIME)
 @Inherited
 @Documented
-@ExtendWith(EnabledOnCommandCondition.class)
+@EnabledOnRedisAvailable
+@ExtendWith({EnabledOnRedisAvailableCondition.class})
 public @interface EnabledOnCommand {
 
 	String host() default "localhost";

redis/util/src/main/java/example/springdata/redis/test/condition/EnabledOnCommandCondition.java

@@ -36,12 +36,18 @@
  */
 class EnabledOnCommandCondition implements ExecutionCondition {
 
+	EnabledOnRedisAvailableCondition redisAvailable = new EnabledOnRedisAvailableCondition();
+
 	private static final ConditionEvaluationResult ENABLED_BY_DEFAULT = enabled("@EnabledOnCommand is not present");
 	private static final ExtensionContext.Namespace NAMESPACE = ExtensionContext.Namespace.create(RedisConditions.class);
 
 	@Override
 	public ConditionEvaluationResult evaluateExecutionCondition(ExtensionContext context) {
 
+		if(redisAvailable.evaluateExecutionCondition(context).isDisabled()) {
+			return disabled("Redis not available");
+		}
+
 		var optional = AnnotationUtils.findAnnotation(context.getElement(), EnabledOnCommand.class);
 
 		if (!optional.isPresent()) {