Fix infinite test task

Author: shepeliev

firebase-common/src/jsMain/kotlin/dev/gitlive/firebase/externals/database/database.kt

@@ -39,6 +39,10 @@ external fun limitToLast(limit: Int): QueryConstraint
 
 external fun off(query: Query, eventType: String?, callback: Any?)
 
+external fun goOffline(db: Database)
+
+external fun goOnline(db: Database)
+
 external fun onChildAdded(
     query: Query,
     callback: ChangeSnapshotCallback,

firebase-database/src/commonTest/kotlin/dev.gitlive.firebase.database/database.kt

@@ -6,8 +6,10 @@ package dev.gitlive.firebase.database
 
 import dev.gitlive.firebase.*
 import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.withTimeout
 import kotlinx.serialization.*
 import kotlin.test.*
+import kotlin.time.Duration.Companion.seconds
 
 expect val emulatorHost: String
 expect val context: Any
@@ -71,7 +73,9 @@ class FirebaseDatabaseTest {
 
     private suspend fun awaitDatabaseConnection() {
         // workaround to avoid "Database not connected" exception with Firebase emulator
-        Firebase.database.reference(".info/connected").valueEvents.first { it.value() }
+        withTimeout(5.seconds) {
+            Firebase.database.reference(".info/connected").valueEvents.first { it.value() }
+        }
     }
 
     private suspend fun setupRealtimeData() {

firebase-database/src/jsTest/kotlin/dev.gitlive.firebase.database/database.kt

@@ -4,6 +4,9 @@
 
 package dev.gitlive.firebase.database
 
+import dev.gitlive.firebase.externals.database.getDatabase
+import dev.gitlive.firebase.externals.database.goOffline
+import dev.gitlive.firebase.externals.database.goOnline
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.promise
 
@@ -14,7 +17,10 @@ actual val context: Any = Unit
 actual fun runTest(test: suspend () -> Unit) = GlobalScope
     .promise {
         try {
+            val db = getDatabase()
+            goOnline(db)
             test()
+            goOffline(db) // infinitely running test task workaround
         } catch (e: Throwable) {
             e.log()
             throw e
@@ -28,4 +34,3 @@ internal fun Throwable.log() {
         it.log()
     }
 }
-