Add customFields for 3DS verifyCard (#1339)

* Add customFields for 3DS verifyCard

* update changelog

* Update changelog

* Use [String : String] property for customFields

CHANGELOG.md

@@ -1,6 +1,8 @@
 # Braintree iOS SDK Release Notes
 
 ## unreleased
+* BraintreeThreeDSecure
+  * Add `customFields` param to `BTThreeDSecureRequest`
 * BraintreeCore
   * For analytics, only call `fetchOrReturnRemoteConfig()` when batch uploading, not on each analytic event enqueue
   * For analytics, add additional metrics on networking timing

Demo/Application/Features/ThreeDSecureViewController.swift

@@ -91,6 +91,13 @@ class ThreeDSecureViewController: PaymentButtonBaseViewController {
 
     private func createThreeDSecureRequest(with nonce: String) -> BTThreeDSecureRequest {
         let request = BTThreeDSecureRequest()
+
+        let customFields = [
+            "test" : "test",
+            "test1": "test1",
+        ]
+
+        request.customFields = customFields
         request.threeDSecureRequestDelegate = self
         request.amount = 10.32
         request.nonce = nonce

Sources/BraintreeThreeDSecure/BTThreeDSecureClient.swift

@@ -351,7 +351,8 @@ import BraintreeCore
                 "challengeRequested": request.challengeRequested,
                 "exemptionRequested": request.exemptionRequested,
                 "requestedExemptionType": request.requestedExemptionType.stringValue,
-                "dataOnlyRequested": request.dataOnlyRequested
+                "dataOnlyRequested": request.dataOnlyRequested,
+                "customFields": request.customFields
             ]
 
             if request._cardAddChallenge == .requested || request.cardAddChallengeRequested == true {

Sources/BraintreeThreeDSecure/BTThreeDSecureRequest.swift

@@ -11,6 +11,9 @@ import BraintreeCore
 
     /// A nonce to be verified by ThreeDSecure
     public var nonce: String?
+
+    /// Object where each key is the name of a custom field which has been configured in the Control Panel. In the Control Panel you can configure 3D Secure Rules which trigger on certain values.
+    public var customFields: [String: String]? = nil
 
     /// The amount for the transaction
     public var amount: NSDecimalNumber? = 0

UnitTests/BraintreeThreeDSecureTests/BTThreeDSecureRequest_Tests.swift

@@ -7,6 +7,14 @@ class BTThreeDSecureRequest_Tests: XCTestCase {
 
     // MARK: - accountTypeAsString
 
+    func testCustomFields_notNil() {
+        let request = BTThreeDSecureRequest()
+        XCTAssertNil(request.customFields)
+
+        request.customFields = ["test": "test"]
+        XCTAssertNotNil(request.customFields)
+    }
+
     func testAccountTypeAsString_whenAccountTypeIsCredit_returnsCredit() {
         let request = BTThreeDSecureRequest()
         request.accountType = .credit