Convert PayPalPaymentResourceUnitTest from Java to Kotlin (#1393)

* convert tests

* organize imports

Author: saralvasquez

PayPal/build.gradle

@@ -52,6 +52,7 @@ dependencies {
     testImplementation libs.json.assert
     testImplementation libs.mockito.core
     testImplementation libs.mockk
+    testImplementation libs.kotlin.test
     testImplementation libs.test.parameter.injector
     testImplementation project(':TestUtils')
 }

PayPal/src/test/java/com/braintreepayments/api/paypal/PayPalPaymentResourceUnitTest.java

@@ -0,0 +1,64 @@
+package com.braintreepayments.api.paypal
+
+import org.json.JSONObject
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestParameterInjector
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
+
+@RunWith(RobolectricTestParameterInjector::class)
+class PayPalPaymentResourceUnitTest {
+
+    @Test
+    fun `fromJson parses redirectUrl from one-time PaymentResource app switch flow`() {
+        val oneTimePaymentJson = JSONObject()
+            .put("paymentResource", JSONObject()
+                .put("redirectUrl", "www.example.com/redirect")
+                .put("launchPayPalApp", true)
+            ).toString()
+
+        val sut = PayPalPaymentResource.fromJson(oneTimePaymentJson)
+        assertEquals("www.example.com/redirect", sut.redirectUrl)
+        assertTrue(sut.isAppSwitchFlow)
+    }
+
+    @Test
+    fun `fromJson parses redirectUrl from one-time PaymentResource fallback flow`() {
+        val oneTimePaymentJson = JSONObject()
+            .put("paymentResource", JSONObject()
+                .put("redirectUrl", "www.example.com/redirect")
+                .put("launchPayPalApp", false)
+            ).toString()
+
+        val sut = PayPalPaymentResource.fromJson(oneTimePaymentJson)
+        assertEquals("www.example.com/redirect", sut.redirectUrl)
+        assertFalse(sut.isAppSwitchFlow)
+    }
+
+    @Test
+    fun `fromJson parses redirectUrl from billingAgreement PaymentResource`() {
+        val billingAgreementJson = JSONObject()
+            .put("agreementSetup", JSONObject()
+                .put("approvalUrl", "www.example.com/redirect")
+            ).toString()
+
+        val sut = PayPalPaymentResource.fromJson(billingAgreementJson)
+        assertEquals("www.example.com/redirect", sut.redirectUrl)
+        assertFalse(sut.isAppSwitchFlow)
+    }
+
+    @Test
+    fun `fromJson parses redirectUrl from billingAgreement PaymentResource returns PayPalRedirectUrl`() {
+        val billingAgreementJson = JSONObject()
+            .put("agreementSetup", JSONObject()
+                .put("approvalUrl", "www.example.com/redirect")
+                .put("paypalAppApprovalUrl", "www.paypal.example.com/redirect")
+            ).toString()
+
+        val sut = PayPalPaymentResource.fromJson(billingAgreementJson)
+        assertEquals("www.paypal.example.com/redirect", sut.redirectUrl)
+        assertTrue(sut.isAppSwitchFlow)
+    }
+}