Fixed failing test

Author: Daeda88

firebase-firestore/src/androidMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt

@@ -57,7 +57,7 @@ val LocalCacheSettings.android: com.google.firebase.firestore.LocalCacheSettings
 private val callbackExecutorMap = ConcurrentHashMap<com.google.firebase.firestore.FirebaseFirestore, Executor>()
 
 actual typealias NativeFirebaseFirestore = com.google.firebase.firestore.FirebaseFirestore
-actual internal class NativeFirebaseFirestoreWrapper actual constructor(actual val native: NativeFirebaseFirestore) {
+internal actual class NativeFirebaseFirestoreWrapper actual constructor(actual val native: NativeFirebaseFirestore) {
 
     actual var settings: FirebaseFirestoreSettings
         get() = with(native.firestoreSettings) {

firebase-firestore/src/commonMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt

@@ -40,7 +40,8 @@ class FirebaseFirestore internal constructor(private val wrapper: NativeFirebase
 
     constructor(native: NativeFirebaseFirestore) : this(NativeFirebaseFirestoreWrapper(native))
 
-    val native = wrapper.native
+    // Important to leave this as a get property since on JS it is initialized lazily
+    val native get() = wrapper.native
     var settings: FirebaseFirestoreSettings
         get() = wrapper.settings
         set(value) {

firebase-firestore/src/commonTest/kotlin/dev/gitlive/firebase/firestore/FirestoreSourceTest.kt

@@ -39,7 +39,13 @@ class FirestoreSourceTest {
 
         firestore = Firebase.firestore(app).apply {
             useEmulator(emulatorHost, 8080)
-            setSettings(persistenceEnabled = persistenceEnabled)
+            settings = firestoreSettings(settings) {
+                cacheSettings = if (persistenceEnabled) {
+                    persistentCacheSettings {  }
+                } else {
+                    memoryCacheSettings { }
+                }
+            }
         }
     }
 

firebase-firestore/src/iosMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt

@@ -39,7 +39,7 @@ val LocalCacheSettings.ios: FIRLocalCacheSettingsProtocol get() = when (this) {
 actual typealias NativeFirebaseFirestore = FIRFirestore
 
 @Suppress("UNCHECKED_CAST")
-actual internal class NativeFirebaseFirestoreWrapper internal actual constructor(actual val native: NativeFirebaseFirestore) {
+internal actual class NativeFirebaseFirestoreWrapper internal actual constructor(actual val native: NativeFirebaseFirestore) {
 
     actual var settings: FirebaseFirestoreSettings = firestoreSettings { }.also {
         native.settings = it.ios

firebase-firestore/src/jsMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt

@@ -78,7 +78,7 @@ actual fun Firebase.firestore(app: FirebaseApp) =
 
 actual data class NativeFirebaseFirestore(val js: JsFirestore)
 
-actual internal class NativeFirebaseFirestoreWrapper internal constructor(
+internal actual class NativeFirebaseFirestoreWrapper internal constructor(
     private val createNative: NativeFirebaseFirestoreWrapper.() -> NativeFirebaseFirestore
 ){
 
@@ -98,13 +98,21 @@ actual internal class NativeFirebaseFirestoreWrapper internal constructor(
     private data class EmulatorSettings(val host: String, val port: Int)
 
     actual var settings: FirebaseFirestoreSettings = FirebaseFirestoreSettings.Builder().build()
+        set(value) {
+            if (lazyNative.isInitialized()) {
+                throw IllegalStateException("FirebaseFirestore has already been started and its settings can no longer be changed. You can only call setFirestoreSettings() before calling any other methods on a FirebaseFirestore object.")
+            } else {
+                field = value
+            }
+        }
     private var emulatorSettings: EmulatorSettings? = null
 
     // initializeFirestore must be called before any call, including before `getFirestore()`
     // To allow settings to be updated, we defer creating the wrapper until the first call to `native`
-    actual val native: NativeFirebaseFirestore by lazy {
+    private val lazyNative = lazy {
         createNative()
     }
+    actual val native: NativeFirebaseFirestore by lazyNative
     private val js get() = native.js
 
     actual fun collection(collectionPath: String) = rethrow { NativeCollectionReference(jsCollection(js, collectionPath)) }