Installing Auth module causes SettingsSessionManager error in Native Kotlin

[unovil]

I'm using a separate file (under :app module but separate from Android with main()) so I can test my Supabase logic before adding it to my Android project. I read the issue in #69 and tried to use the same code in my native Kotlin config:

import com.russhwolf.settings.MapSettings
import io.github.jan.supabase.auth.Auth
import io.github.jan.supabase.auth.SettingsSessionManager
import io.github.jan.supabase.auth.auth
import io.github.jan.supabase.auth.providers.builtin.Email
import io.github.jan.supabase.createSupabaseClient
import io.github.jan.supabase.postgrest.Postgrest
import io.github.jan.supabase.postgrest.PropertyConversionMethod
import kotlinx.coroutines.runBlocking
import kotlinx.serialization.json.JsonPrimitive
import kotlinx.serialization.json.buildJsonObject


fun main() {
    val supabaseClient = createSupabaseClient(
        supabaseUrl = BuildConfig.SUPABASE_URL,
        supabaseKey = BuildConfig.SUPABASE_KEY
    ) {
        install(Postgrest) {
            propertyConversionMethod = PropertyConversionMethod.SERIAL_NAME

        }
        install(Auth) {
            sessionManager = SettingsSessionManager(MapSettings())
        }
    }
    // ...
}

However, the code throws an error:

Exception in thread "main" java.lang.IllegalStateException: Failed to create default settings for SettingsSessionManager. You might have to provide a custom settings instance or a custom session manager. Learn more at https://github.com/supabase-community/supabase-kt/wiki/Session-Saving
	at io.github.jan.supabase.auth.SettingsUtilKt.createDefaultSettings(SettingsUtil.kt:11)
	at io.github.jan.supabase.auth.SettingsCodeVerifierCache.<init>(SettingsCodeVerifierCache.kt:15)
	at io.github.jan.supabase.auth.SettingsUtilKt.createDefaultCodeVerifierCache(SettingsUtil.kt:29)
	at io.github.jan.supabase.auth.AuthImpl.<init>(AuthImpl.kt:75)
	at io.github.jan.supabase.auth.Auth$Companion.create(Auth.kt:422)
	at io.github.jan.supabase.auth.Auth$Companion.create(Auth.kt:410)
	at io.github.jan.supabase.SupabaseClientBuilder.install$lambda$2(SupabaseClientBuilder.kt:146)
	at io.github.jan.supabase.SupabaseClientImpl.<init>(SupabaseClient.kt:118)
	at io.github.jan.supabase.SupabaseClientBuilder.build(SupabaseClientBuilder.kt:120)
	at com.unovil.tardyscan.SandboxKt.main(Sandbox.kt:39)
	at com.unovil.tardyscan.SandboxKt.main(Sandbox.kt)

Clicking on the link provided in the error redirects me to the main GitHub page, and other than the issue page mentioned above I can't find any other mention of this online. Is there a way to fix this?

Using:

• supabase (bom) version 3.1.4
• multiplatform settings test version 1.3.0

[unovil]

I found the solution! The problem was within the Settings() factory function of com.russhwolf.settings.Settings. This function gets called in createDefaultSettings() to be assigned by default to sessionManager when installing the Auth module.

However, Settings() needs to invoke the SharedPreferences API on Android, which isn't possible because this is a native Kotlin test, as stated by russhwolf here. To fix it, I have to mock the Context class first then initialize the Settings with the mocked context. Also, I have to manually set the Dispatcher since it would be used later on.

Here's the fixed code:

import android.content.Context
import com.russhwolf.settings.SettingsInitializer
import io.github.jan.supabase.auth.Auth
import io.github.jan.supabase.auth.auth
import io.github.jan.supabase.auth.providers.builtin.Email
import io.github.jan.supabase.createSupabaseClient
import io.github.jan.supabase.postgrest.Postgrest
import io.github.jan.supabase.postgrest.PropertyConversionMethod
import io.mockk.mockk
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.test.setMain
import kotlinx.serialization.json.JsonPrimitive
import kotlinx.serialization.json.buildJsonObject


@OptIn(ExperimentalCoroutinesApi::class)
fun main() {
    val context: Context = mockk(relaxed = true)
    SettingsInitializer().create(context)
    Dispatchers.setMain(Dispatchers.IO)

    val supabaseClient = createSupabaseClient(
        supabaseUrl = BuildConfig.SUPABASE_URL,
        supabaseKey = BuildConfig.SUPABASE_KEY
    ) {
        install(Postgrest) {
            propertyConversionMethod = PropertyConversionMethod.SERIAL_NAME

        }
        install(Auth)
    }
    // ...
}

Thanks!