Merge RCTPlatform.isTesting and RCTRunningInTestEnvironment

Reviewed By: fkgozali

Differential Revision: D4802834

fbshipit-source-id: 76bb98877f2fc427c01806b192d8dc71489a1c4a

React/Base/RCTPlatform.m

@@ -30,11 +30,6 @@ static NSString *interfaceIdiom(UIUserInterfaceIdiom idiom) {
   }
 }
 
-static BOOL isTestingEnvironment(void) {
-  NSDictionary *environment = [[NSProcessInfo processInfo] environment];
-  return [environment[@"IS_TESTING"] boolValue];
-}
-
 RCT_EXPORT_MODULE(PlatformConstants)
 
 - (NSDictionary<NSString *, id> *)constantsToExport
@@ -45,7 +40,7 @@ RCT_EXPORT_MODULE(PlatformConstants)
     @"osVersion": [device systemVersion],
     @"systemName": [device systemName],
     @"interfaceIdiom": interfaceIdiom([device userInterfaceIdiom]),
-    @"isTesting": @(isTestingEnvironment()),
+    @"isTesting": @(RCTRunningInTestEnvironment()),
   };
 }
 

React/Base/RCTUtils.m

@@ -9,17 +9,16 @@
 
 #import "RCTUtils.h"
 
+#import <dlfcn.h>
 #import <mach/mach_time.h>
 #import <objc/message.h>
 #import <objc/runtime.h>
+#import <zlib.h>
 
 #import <UIKit/UIKit.h>
 
 #import <CommonCrypto/CommonCrypto.h>
 
-#import <zlib.h>
-#import <dlfcn.h>
-
 #import "RCTAssert.h"
 #import "RCTLog.h"
 
@@ -445,7 +444,9 @@ BOOL RCTRunningInTestEnvironment(void)
   static BOOL isTestEnvironment = NO;
   static dispatch_once_t onceToken;
   dispatch_once(&onceToken, ^{
-    isTestEnvironment = objc_lookUpClass("SenTestCase") || objc_lookUpClass("XCTest");
+    NSDictionary *environment = [[NSProcessInfo processInfo] environment];
+    isTestEnvironment = objc_lookUpClass("SenTestCase") || objc_lookUpClass("XCTest") ||
+      [environment[@"IS_TESTING"] boolValue];
   });
   return isTestEnvironment;
 }