Netflix#733: added tests for async generic method

hystrix-contrib/hystrix-javanica/src/main/java/com/netflix/hystrix/contrib/javanica/annotation/HystrixCollapser.java

@@ -45,7 +45,7 @@
  *
  * A method annotated with {@link HystrixCollapser} annotation can return any
  * value with compatible type, it does not affect the result of collapser execution,
- * collapser method can even return {@code null} or another stab.
+ * collapser method can even return {@code null} or another stub.
  * Pay attention that if a collapser method returns parametrized Future then generic type must be equal to generic type of List,
  * for instance:
  * <pre>

hystrix-contrib/hystrix-javanica/src/test/java/com/netflix/hystrix/contrib/javanica/test/spring/command/CommandTest.java

@@ -102,6 +102,15 @@ public void should_work_with_parameterized_method() throws Exception {
         assertTrue(getCommand().getExecutionEvents().contains(HystrixEventType.SUCCESS));
     }
 
+    @Test
+    public void should_work_with_parameterized_asyncMethod() throws Exception {
+        assertEquals(Integer.valueOf(1), userService.echoAsync(1).get());
+
+        assertEquals(1, HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().size());
+        assertTrue(getCommand().getExecutionEvents().contains(HystrixEventType.SUCCESS));
+    }
+
+
     private void assertGetUserSnycCommandExecuted(User u1) {
         assertEquals("name: 1", u1.getName());
         assertEquals(1, HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().size());
@@ -138,6 +147,16 @@ public <T> T echo(T value) {
             return value;
         }
 
+        @HystrixCommand
+        public <T> Future<T> echoAsync(final T value) {
+            return new AsyncResult<T>() {
+                @Override
+                public T invoke() {
+                    return value;
+                }
+            };
+        }
+
     }
 
     public static class AdvancedUserService extends UserService {