Downgrade kotlin from 1.5.0 to 1.4.32

build.gradle

@@ -2,7 +2,7 @@ import java.time.Duration
 
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-    ext.kotlinVersion = '1.5.0'
+    ext.kotlinVersion = '1.4.32'
     ext.dokkaVersion = '1.4.30'
 
     repositories {

example/src/main/java/com/stripe/example/activity/SofortPaymentMethodActivity.kt

@@ -7,6 +7,7 @@ import com.stripe.android.model.Address
 import com.stripe.android.model.PaymentMethod
 import com.stripe.android.model.PaymentMethodCreateParams
 import com.stripe.example.databinding.SofortActivityBinding
+import java.util.Locale
 
 class SofortPaymentMethodActivity : StripeIntentActivity() {
     private val viewBinding: SofortActivityBinding by lazy {
@@ -26,7 +27,7 @@ class SofortPaymentMethodActivity : StripeIntentActivity() {
         viewBinding.submit.setOnClickListener {
             keyboardController.hide()
 
-            val country = viewBinding.country.text.toString().lowercase()
+            val country = viewBinding.country.text.toString().toLowerCase(Locale.ROOT)
             createAndConfirmPaymentIntent(
                 country,
                 PaymentMethodCreateParams.create(

stripe/src/main/java/com/stripe/android/GooglePayJsonFactory.kt

@@ -136,11 +136,11 @@ class GooglePayJsonFactory constructor(
         transactionInfo: TransactionInfo
     ): JSONObject {
         return JSONObject()
-            .put("currencyCode", transactionInfo.currencyCode.uppercase())
+            .put("currencyCode", transactionInfo.currencyCode.toUpperCase(Locale.ROOT))
             .put("totalPriceStatus", transactionInfo.totalPriceStatus.code)
             .apply {
                 transactionInfo.countryCode?.let {
-                    put("countryCode", it.uppercase())
+                    put("countryCode", it.toUpperCase(Locale.ROOT))
                 }
 
                 transactionInfo.transactionId?.let {
@@ -153,7 +153,7 @@ class GooglePayJsonFactory constructor(
                         PayWithGoogleUtils.getPriceString(
                             it,
                             Currency.getInstance(
-                                transactionInfo.currencyCode.uppercase()
+                                transactionInfo.currencyCode.toUpperCase(Locale.ROOT)
                             )
                         )
                     )
@@ -370,7 +370,7 @@ class GooglePayJsonFactory constructor(
         internal val normalizedAllowedCountryCodes: Set<String>
             get() {
                 return allowedCountryCodes.map {
-                    it.uppercase()
+                    it.toUpperCase(Locale.ROOT)
                 }.toSet()
             }
 

stripe/src/main/java/com/stripe/android/PaymentIntentResult.kt

@@ -10,6 +10,6 @@ import kotlinx.parcelize.Parcelize
 @Parcelize
 data class PaymentIntentResult internal constructor(
     override val intent: PaymentIntent,
-    @Outcome override val outcomeFromFlow: Int = 0,
+    @Outcome private val outcomeFromFlow: Int = 0,
     val failureMessage: String? = null
-) : StripeIntentResult<PaymentIntent>()
+) : StripeIntentResult<PaymentIntent>(outcomeFromFlow)

stripe/src/main/java/com/stripe/android/PaymentRelayStarter.kt

@@ -130,6 +130,9 @@ internal interface PaymentRelayStarter : AuthActivityStarter<PaymentRelayStarter
                     is SetupIntent -> {
                         SetupIntentArgs(stripeIntent, stripeAccountId)
                     }
+                    else -> {
+                        error("StripeIntent must either be a PaymentIntent or SetupIntent.")
+                    }
                 }
             }
         }

stripe/src/main/java/com/stripe/android/SetupIntentResult.kt

@@ -10,6 +10,6 @@ import kotlinx.parcelize.Parcelize
 @Parcelize
 data class SetupIntentResult internal constructor(
     override val intent: SetupIntent,
-    @Outcome override val outcomeFromFlow: Int = 0,
+    @Outcome private val outcomeFromFlow: Int = 0,
     val failureMessage: String? = null
-) : StripeIntentResult<SetupIntent>()
+) : StripeIntentResult<SetupIntent>(outcomeFromFlow)

stripe/src/main/java/com/stripe/android/StripeIntentResult.kt

@@ -11,12 +11,11 @@ import com.stripe.android.model.StripeModel
  *
  * [intent] is a [StripeIntent] retrieved after confirmation/authentication succeeded or failed.
  */
-sealed class StripeIntentResult<T : StripeIntent> : StripeModel {
+abstract class StripeIntentResult<T : StripeIntent> internal constructor(
+    @Outcome private val outcomeFromFlow: Int
+) : StripeModel {
     abstract val intent: T
 
-    @Outcome
-    protected abstract val outcomeFromFlow: Int
-
     @Outcome
     @get:Outcome
     val outcome: Int

stripe/src/main/java/com/stripe/android/model/Address.kt

@@ -4,6 +4,7 @@ import com.stripe.android.ObjectBuilder
 import com.stripe.android.model.parsers.AddressJsonParser
 import kotlinx.parcelize.Parcelize
 import org.json.JSONObject
+import java.util.Locale
 
 /**
  * Model for an owner [address](https://stripe.com/docs/api#source_object-owner-address)
@@ -45,7 +46,7 @@ data class Address internal constructor(
         }
 
         fun setCountry(country: String?): Builder = apply {
-            this.country = country?.uppercase()
+            this.country = country?.toUpperCase(Locale.ROOT)
         }
 
         internal fun setCountryCode(countryCode: CountryCode?): Builder = apply {

stripe/src/main/java/com/stripe/android/model/AddressJapanParams.kt

@@ -3,6 +3,7 @@ package com.stripe.android.model
 import android.os.Parcelable
 import com.stripe.android.ObjectBuilder
 import kotlinx.parcelize.Parcelize
+import java.util.Locale
 
 @Parcelize
 data class AddressJapanParams(
@@ -77,7 +78,7 @@ data class AddressJapanParams(
          * @param country Two-letter country code (ISO 3166-1 alpha-2).
          */
         fun setCountry(country: String?): Builder = apply {
-            this.country = country?.uppercase()
+            this.country = country?.toUpperCase(Locale.ROOT)
         }
 
         /**

stripe/src/main/java/com/stripe/android/model/CountryCode.kt

@@ -18,6 +18,6 @@ internal data class CountryCode private constructor(
         fun isCA(countryCode: CountryCode?) = countryCode == CA
         fun isGB(countryCode: CountryCode?) = countryCode == GB
 
-        fun create(value: String) = CountryCode(value.uppercase())
+        fun create(value: String) = CountryCode(value.toUpperCase(Locale.ROOT))
     }
 }

stripe/src/main/java/com/stripe/android/model/PaymentMethodCreateParams.kt

@@ -7,6 +7,7 @@ import com.stripe.android.Stripe
 import kotlinx.parcelize.Parcelize
 import org.json.JSONException
 import org.json.JSONObject
+import java.util.Locale
 
 /**
  * Model for PaymentMethod creation parameters.
@@ -438,7 +439,7 @@ data class PaymentMethodCreateParams internal constructor(
     ) : StripeParamsModel, Parcelable {
         override fun toParamMap(): Map<String, Any> {
             return mapOf(
-                PARAM_COUNTRY to country.uppercase()
+                PARAM_COUNTRY to country.toUpperCase(Locale.ROOT)
             )
         }
 
@@ -453,7 +454,7 @@ data class PaymentMethodCreateParams internal constructor(
     ) : StripeParamsModel, Parcelable {
         override fun toParamMap(): Map<String, Any> {
             return mapOf(
-                PARAM_BANK to bank.lowercase()
+                PARAM_BANK to bank.toLowerCase(Locale.ROOT)
             )
         }
 

stripe/src/main/java/com/stripe/android/model/StripeIntent.kt

@@ -8,7 +8,7 @@ import kotlinx.parcelize.Parcelize
 /**
  * An interface for methods available in [PaymentIntent] and [SetupIntent]
  */
-sealed interface StripeIntent : StripeModel {
+interface StripeIntent : StripeModel {
     /**
      * Unique identifier for the object.
      */

stripe/src/main/java/com/stripe/android/payments/PaymentFlowFailureMessageFactory.kt

@@ -22,6 +22,7 @@ internal class PaymentFlowFailureMessageFactory(
                 is SetupIntent -> {
                     createForSetupIntent(intent)
                 }
+                else -> null
             }
         }
         outcome == StripeIntentResult.Outcome.TIMEDOUT -> {

stripe/src/main/java/com/stripe/android/paymentsheet/CurrencyFormatter.kt

@@ -14,7 +14,7 @@ internal class CurrencyFormatter {
         targetLocale: Locale = Locale.getDefault()
     ) = format(
         amount,
-        Currency.getInstance(amountCurrencyCode.uppercase()),
+        Currency.getInstance(amountCurrencyCode.toUpperCase(Locale.ROOT)),
         targetLocale
     )
 
@@ -70,7 +70,7 @@ internal class CurrencyFormatter {
          */
         return SERVER_DECIMAL_DIGITS
             .filter { entry ->
-                entry.key.contains(currency.currencyCode.uppercase())
+                entry.key.contains(currency.currencyCode.toUpperCase(Locale.ROOT))
             }.map {
                 it.value
             }.firstOrNull() ?: currency.defaultFractionDigits

stripe/src/main/java/com/stripe/android/view/CountryAdapter.kt

@@ -10,6 +10,7 @@ import android.widget.Filter
 import android.widget.TextView
 import com.stripe.android.R
 import java.lang.ref.WeakReference
+import java.util.Locale
 
 /**
  * Adapter that populates a list of countries for a spinner.
@@ -127,8 +128,8 @@ internal class CountryAdapter(
         private fun getSuggestedCountries(constraint: CharSequence?): List<Country> {
             return unfilteredCountries
                 .filter {
-                    it.name.lowercase().startsWith(
-                        constraint.toString().lowercase()
+                    it.name.toLowerCase(Locale.ROOT).startsWith(
+                        constraint.toString().toLowerCase(Locale.ROOT)
                     )
                 }
         }

stripe/src/main/java/com/stripe/android/view/CountryUtils.kt

@@ -46,7 +46,7 @@ internal object CountryUtils {
         return listOfNotNull(getCountryByCode(currentLocale.getCountryCode(), currentLocale))
             .plus(
                 localizedCountries(currentLocale)
-                    .sortedBy { it.name.lowercase() }
+                    .sortedBy { it.name.toLowerCase(Locale.ROOT) }
                     .filterNot { it.code == currentLocale.getCountryCode() }
             )
     }
@@ -60,7 +60,7 @@ internal object CountryUtils {
     )
     @JvmSynthetic
     internal fun doesCountryUsePostalCode(countryCode: String): Boolean {
-        return !NO_POSTAL_CODE_COUNTRIES.contains(countryCode.uppercase())
+        return !NO_POSTAL_CODE_COUNTRIES.contains(countryCode.toUpperCase(Locale.ROOT))
     }
 
     @JvmSynthetic

stripe/src/test/java/com/stripe/android/networking/StripeApiRepositoryTest.kt

@@ -58,7 +58,7 @@ import kotlin.test.Ignore
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertFailsWith
-import kotlin.test.assertIs
+import kotlin.test.assertTrue
 
 @RunWith(RobolectricTestRunner::class)
 @ExperimentalCoroutinesApi
@@ -419,12 +419,12 @@ internal class StripeApiRepositoryTest {
             )
 
             verify(stripeApiRequestExecutor).execute(apiRequestArgumentCaptor.capture())
-            val requestParams = apiRequestArgumentCaptor.firstValue.params.orEmpty()
-            val paymentMethodParams = assertIs<Map<String, *>>(requestParams["payment_method_data"])
-            assertIs<String>(paymentMethodParams["muid"])
-            assertIs<String>(paymentMethodParams["guid"])
-            assertThat(paymentMethodParams["type"])
-                .isEqualTo("card")
+            val apiRequest = apiRequestArgumentCaptor.firstValue
+            val paymentMethodDataParams =
+                apiRequest.params?.get("payment_method_data") as Map<String, *>
+            assertTrue(paymentMethodDataParams["muid"] is String)
+            assertTrue(paymentMethodDataParams["guid"] is String)
+            assertEquals("card", paymentMethodDataParams["type"])
 
             verifyFingerprintAndAnalyticsRequests(AnalyticsEvent.PaymentIntentConfirm)