Extract OpRepo's poll interval into a constant

* Store in the variable `POLL_INTERVAL_MS` so that it can have a different value for testing vs non-testing

Author: nan-li

iOS_SDK/OneSignalSDK/OneSignalCore/Source/OneSignalCommonDefines.h

@@ -255,6 +255,9 @@ typedef enum {GET, POST, HEAD, PUT, DELETE, OPTIONS, CONNECT, TRACE, PATCH} HTTP
 
     // Defines the maximum delay time for confirmed deliveries
     #define MAX_CONF_DELIVERY_DELAY 25.0
+
+    // Flush interval for operation repo in milliseconds
+    #define POLL_INTERVAL_MS 5000
 #else
     // Test defines for API Client
     #define REATTEMPT_DELAY 0.004
@@ -272,6 +275,9 @@ typedef enum {GET, POST, HEAD, PUT, DELETE, OPTIONS, CONNECT, TRACE, PATCH} HTTP
     // We don't want to delay confirmed deliveries in unit tests
     #define MAX_CONF_DELIVERY_DELAY 0
 
+    // Reduce flush interval for operation repo in tests
+    #define POLL_INTERVAL_MS 100
+
 #endif
 
 // A max timeout for a request, which might include multiple reattempts

iOS_SDK/OneSignalSDK/OneSignalOSCore/Source/OSOperationRepo.swift

@@ -41,8 +41,8 @@ public class OSOperationRepo: NSObject {
     var executors: [OSOperationExecutor] = []
     var deltaQueue: [OSDelta] = []
 
-    // TODO: This should come from a config, plist, method, remote params
-    var pollIntervalSeconds = 5
+    // TODO: This could come from a config, plist, method, remote params
+    var pollIntervalMilliseconds = Int(POLL_INTERVAL_MS)
     public var paused = false
 
     /**
@@ -76,7 +76,7 @@ public class OSOperationRepo: NSObject {
     }
 
     private func pollFlushQueue() {
-        DispatchQueue.global().asyncAfter(deadline: .now() + .seconds(pollIntervalSeconds)) { [weak self] in
+        DispatchQueue.global().asyncAfter(deadline: .now() + .milliseconds(pollIntervalMilliseconds)) { [weak self] in
             self?.flushDeltaQueue()
             self?.pollFlushQueue()
         }