Add unit test for DropInConfigDataGenerator

COAND-967

drop-in/src/test/java/com/adyen/checkout/dropin/internal/ui/DropInConfigDataGeneratorTest.kt

@@ -0,0 +1,45 @@
+package com.adyen.checkout.dropin.internal.ui
+
+import com.adyen.checkout.components.core.internal.ui.model.AnalyticsParams
+import com.adyen.checkout.components.core.internal.ui.model.AnalyticsParamsLevel
+import com.adyen.checkout.core.Environment
+import com.adyen.checkout.dropin.internal.ui.model.DropInParams
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import java.util.Locale
+
+internal class DropInConfigDataGeneratorTest {
+
+    private lateinit var dropInConfigDataGenerator: DropInConfigDataGenerator
+
+    @BeforeEach
+    fun beforeEach() {
+        dropInConfigDataGenerator = DropInConfigDataGenerator()
+    }
+
+    @Test
+    fun `when generating config data, then fields are correctly mapped`() {
+        val result = dropInConfigDataGenerator.generate(createDropInParams())
+
+        val expected = mapOf(
+            "skipPaymentMethodList" to "false",
+            "openFirstStoredPaymentMethod" to "true",
+            "isRemovingStoredPaymentMethodsEnabled" to "true",
+        )
+        assertEquals(expected, result)
+    }
+
+    private fun createDropInParams() = DropInParams(
+        shopperLocale = Locale.US,
+        environment = Environment.TEST,
+        clientKey = "clientKey",
+        analyticsParams = AnalyticsParams(AnalyticsParamsLevel.ALL, "clientKey"),
+        amount = null,
+        showPreselectedStoredPaymentMethod = true,
+        skipListWhenSinglePaymentMethod = false,
+        isRemovingStoredPaymentMethodsEnabled = true,
+        additionalDataForDropInService = null,
+        overriddenPaymentMethodInformation = emptyMap(),
+    )
+}