Vertx#close Future will not callback the handler - closes #3232

src/main/java/io/vertx/core/impl/VertxImpl.java

@@ -478,7 +478,8 @@ public class VertxImpl implements VertxInternal, MetricsProvider {
 
   @Override
   public Future<Void> close() {
-    Promise<Void> promise = getOrCreateContext().promise();
+    // Create this promise purposely without a context because the close operation will close thread pools
+    Promise<Void> promise = Promise.promise();
     close(promise);
     return promise.future();
   }

src/test/java/io/vertx/core/VertxTest.java

@@ -100,4 +100,15 @@ public class VertxTest extends AsyncTestBase {
     });
     await();
   }
+
+  @Test
+  public void testCloseFuture() throws Exception {
+    Vertx vertx = Vertx.vertx();
+    Future<Void> fut = vertx.close();
+    // Check that we can get a callback on the future as thread pools are closed by the operation
+    fut.onComplete(onSuccess(v -> {
+      testComplete();
+    }));
+    await();
+  }
 }