Added tests for synchronous methods in native modules on iOS

Reviewed By: javache

Differential Revision: D4947631

fbshipit-source-id: d7e497c44602eb6e38896a00edb61639ab2b8cd4

Examples/UIExplorer/UIExplorerIntegrationTests/UIExplorerTestModule.m

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import <React/RCTBridgeModule.h>
+
+@interface UIExplorerTestModule : NSObject <RCTBridgeModule>
+
+@end
+
+@implementation UIExplorerTestModule
+
+RCT_EXPORT_MODULE(UIExplorerTestModule)
+
+RCT_EXPORT_BLOCKING_SYNCHRONOUS_METHOD(echoString:(NSString *)input)
+{
+  return input;
+}
+
+RCT_EXPORT_BLOCKING_SYNCHRONOUS_METHOD(methodThatReturnsNil)
+{
+  return nil;
+}
+
+@end