Convert GooglePayLauncherUnitTest to Kotlin (braintree#1294)

* convert GooglePayLauncherUnitTest to kotlin

* Update GooglePay/src/test/java/com/braintreepayments/api/googlepay/GooglePayLauncherUnitTest.kt

* Remove assertion operators

---------

Co-authored-by: Tim Chow <tichow@paypal.com>

Author: saralvasquez

GooglePay/src/test/java/com/braintreepayments/api/googlepay/GooglePayLauncherUnitTest.java

@@ -0,0 +1,68 @@
+package com.braintreepayments.api.googlepay
+
+import androidx.activity.result.ActivityResultLauncher
+import androidx.activity.result.ActivityResultRegistry
+import androidx.activity.result.contract.ActivityResultContract
+import androidx.fragment.app.FragmentActivity
+import com.google.android.gms.wallet.PaymentDataRequest
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.verify
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+
+@RunWith(RobolectricTestRunner::class)
+class GooglePayLauncherUnitTest {
+
+    private val activityResultLauncher =
+        mockk<ActivityResultLauncher<GooglePayPaymentAuthRequestParams?>>(relaxed = true)
+    private val callback = mockk<GooglePayLauncherCallback>(relaxed = true)
+    private val activityResultRegistry = mockk<ActivityResultRegistry>(relaxed = true)
+
+    @Before
+    fun beforeEach() {
+        every {
+            activityResultRegistry.register(
+                any(),
+                any(),
+                any<ActivityResultContract<GooglePayPaymentAuthRequestParams, Any>>(),
+                any()
+            )
+        } returns activityResultLauncher
+    }
+
+    @Test
+    fun constructor_createsActivityLauncher() {
+        val expectedKey = "com.braintreepayments.api.GooglePay.RESULT"
+        val lifecycleOwner = FragmentActivity()
+
+        val registry = mockk<ActivityResultRegistry>(relaxed = true)
+        GooglePayLauncher(registry, lifecycleOwner, callback)
+
+        verify {
+            registry.register(
+                eq(expectedKey), eq(lifecycleOwner),
+                any<ActivityResultContract<GooglePayPaymentAuthRequestParams, GooglePayPaymentAuthResult>>(),
+                any()
+            )
+        }
+    }
+
+    @Test
+    fun launch_launchesActivity() {
+        val lifecycleOwner = FragmentActivity()
+        val sut = GooglePayLauncher(
+            activityResultRegistry, lifecycleOwner,
+            callback
+        )
+
+        val googlePayRequest = GooglePayRequest("USD", "1.00", GooglePayTotalPriceStatus.TOTAL_PRICE_STATUS_FINAL)
+        val paymentDataRequest = PaymentDataRequest.fromJson(googlePayRequest.toJson())
+        val intentData = GooglePayPaymentAuthRequestParams(1, paymentDataRequest)
+
+        sut.launch(GooglePayPaymentAuthRequest.ReadyToLaunch(intentData))
+        verify { activityResultLauncher.launch(intentData) }
+    }
+}