Send back json string of config specs from rulesUpdatedCallback

Author: tore-statsig

src/main/kotlin/com/statsig/sdk/StatsigServer.kt

@@ -1,6 +1,8 @@
 package com.statsig.sdk
 
 import com.google.gson.Gson
+import com.google.gson.GsonBuilder
+import com.google.gson.ToNumberPolicy
 import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.CoroutineStart
@@ -171,6 +173,8 @@ private class StatsigServerImpl(serverSecret: String, private val options: Stats
         }
     }
 
+    private val gson = GsonBuilder().setObjectToNumberStrategy(ToNumberPolicy.LONG_OR_DOUBLE).create()
+
     override val errorBoundary = ErrorBoundary(serverSecret, options)
     private val coroutineExceptionHandler =
         CoroutineExceptionHandler { _, ex ->
@@ -204,7 +208,7 @@ private class StatsigServerImpl(serverSecret: String, private val options: Stats
             return
         }
         try {
-            val configString = configSpecs.toString()
+            val configString = gson.toJson(configSpecs)
             options.rulesUpdatedCallback?.accept(configString)
         } catch (e: Exception) {}
     }

src/test/java/com/statsig/sdk/StatsigE2ETest.kt

@@ -376,6 +376,8 @@ class StatsigE2ETest {
                 bootstrapValues = downloadConfigSpecsResponse,
                 rulesUpdatedCallback = {
                     bootstrap_callback_count++
+                    val specs = gson.fromJson(it, APIDownloadedConfigs::class.java)
+                    assert(gson.toJson(specs) == gson.toJson(gson.fromJson(downloadConfigSpecsResponse, APIDownloadedConfigs::class.java)))
                 }
             ).apply {
                 api = server.url("/v1").toString()
@@ -385,7 +387,11 @@ class StatsigE2ETest {
         } else {
             options = StatsigOptions(
                 bootstrapValues = downloadConfigSpecsResponse,
-                rulesUpdatedCallback = { bootstrap_callback_count++ }
+                rulesUpdatedCallback = {
+                    bootstrap_callback_count++
+                    val specs = gson.fromJson(it, APIDownloadedConfigs::class.java)
+                    assert(gson.toJson(specs) == gson.toJson(gson.fromJson(downloadConfigSpecsResponse, APIDownloadedConfigs::class.java)))
+                }
             ).apply {
                 api = server.url("/v1").toString()
             }