Make a MockMessagingController

* Make a `MockMessagingController` in Objective C to allow us to access internal APIs on the OSMessagingController without needing to make them public. This is needed because Swift code cannot access Objective-C APIs unless they are public. This is a workaround for this limitation.

Author: nan-li

iOS_SDK/OneSignalSDK/OneSignal.xcodeproj/project.pbxproj

@@ -1748,6 +1748,7 @@
 		3C43986C2D38C70400EFBD2C /* PBXFileSystemSynchronizedBuildFileExceptionSet */ = {
 			isa = PBXFileSystemSynchronizedBuildFileExceptionSet;
 			publicHeaders = (
+				MockMessagingController.h,
 				OneSignalInAppMessagesMocks.h,
 			);
 			target = 3C4398602D38C70400EFBD2C /* OneSignalInAppMessagesMocks */;

iOS_SDK/OneSignalSDK/OneSignalInAppMessagesMocks/IAMTestHelpers.swift

@@ -94,6 +94,5 @@ public class IAMTestHelpers: NSObject {
         return [
             "in_app_messages" : messages
         ]
-        
     }
 }

iOS_SDK/OneSignalSDK/OneSignalInAppMessagesMocks/MockMessagingController.h

@@ -0,0 +1,38 @@
+/*
+ Modified MIT License
+
+ Copyright 2025 OneSignal
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ 1. The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ 2. All copies of substantial portions of the Software may only be used in connection
+ with services provided by OneSignal.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+ */
+
+#import <Foundation/Foundation.h>
+#import <OneSignalCore/OneSignalCore.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface MockMessagingController : NSObject
++ (NSArray <OSInAppMessage *> *)messageDisplayQueue; // TODO: may need to be changed to return OSInAppMessageInternal
++ (BOOL)isInAppMessageShowing;
+@end
+
+NS_ASSUME_NONNULL_END

iOS_SDK/OneSignalSDK/OneSignalInAppMessagesMocks/MockMessagingController.m

@@ -0,0 +1,48 @@
+/*
+ Modified MIT License
+
+ Copyright 2025 OneSignal
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ 1. The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ 2. All copies of substantial portions of the Software may only be used in connection
+ with services provided by OneSignal.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+ */
+
+#import "MockMessagingController.h"
+#import "OSMessagingController.h"
+
+@interface OSMessagingController ()
+@property (strong, nonatomic, nonnull) NSMutableArray <OSInAppMessageInternal *> *messageDisplayQueue;
+@end
+
+@implementation MockMessagingController
++ (void)resetState {
+    // TODO: reseting OSMessagingController state between tests
+}
+
++ (NSArray *)messageDisplayQueue {
+    return OSMessagingController.sharedInstance.messageDisplayQueue;
+}
+
++ (BOOL)isInAppMessageShowing {
+    return OSMessagingController.sharedInstance.isInAppMessageShowing;
+}
+
+@end

iOS_SDK/OneSignalSDK/OneSignalInAppMessagesMocks/OneSignalInAppMessagesMocks.h

@@ -35,4 +35,4 @@ FOUNDATION_EXPORT const unsigned char OneSignalInAppMessagesMocksVersionString[]
 
 // In this header, you should import all the public headers of your framework using statements like #import <OneSignalInAppMessagesMocks/PublicHeader.h>
 
-
+#import <OneSignalInAppMessagesMocks/MockMessagingController.h>