StoredCardInputViewController: Fix CVV validation by resigning first responder (5.2/6)

AdyenCard/Components/Stored Card/StoredCardInputView/StoredCardInputViewController.swift

@@ -89,10 +89,10 @@ internal class StoredCardInputViewController: UIViewController {
     }()
 
     private lazy var securityCodeItemView: FormCardSecurityCodeItemView = {
-        // TODO: Robert: StoredView: 🐞 There is a bug(COSDK-572) with FormCardSecurityCodeItemView that when i type more than 3 characters only 3 display but validation happens with 4+ characters and then it fails validation. Needs to be debugged separately.
         let view = FormCardSecurityCodeItemView(item: viewModel.securityCodeItem, theme: theme)
         view.translatesAutoresizingMaskIntoConstraints = false
         view.accessibilityIdentifier = ViewIdentifierBuilder.build(scopeInstance: self, postfix: "securityCodeItemView")
+        view.delegate = self
         return view
     }()
 
@@ -177,6 +177,7 @@ internal class StoredCardInputViewController: UIViewController {
         configureContent()
         setupBindings()
         disableSwipeDownToDismissScreen()
+        securityCodeItemView.becomeFirstResponder()
     }
 
     private func disableSwipeDownToDismissScreen() {
@@ -205,6 +206,9 @@ internal class StoredCardInputViewController: UIViewController {
     }
 
     private func updateLoadingState(_ isLoading: Bool) {
+        if isLoading {
+            securityCodeItemView.resignFirstResponder()
+        }
         primaryButton.isEnabled = !isLoading
         primaryButton.showsActivityIndicator = isLoading
         securityCodeItemView.isUserInteractionEnabled = !isLoading
@@ -233,3 +237,13 @@ internal class StoredCardInputViewController: UIViewController {
         }
     }
 }
+
+extension StoredCardInputViewController: FormTextItemViewDelegate {
+    internal func didReachMaximumLength(in itemView: FormTextItemView<some FormTextItem>) {
+        securityCodeItemView.resignFirstResponder()
+    }
+
+    internal func didSelectReturnKey(in itemView: FormTextItemView<some FormTextItem>) {
+        securityCodeItemView.resignFirstResponder()
+    }
+}

Tests/IntegrationTests/Card Tests/StoredCardInputViewControllerTests.swift

@@ -129,6 +129,19 @@ struct StoredCardInputViewControllerTests {
         #expect(viewModel.viewDidDisappearCallsCount == 1)
     }
 
+    // MARK: - D: Security code input behavior
+
+    @Test
+    func typingThreeCharactersInSecurityCode_resignsFirstResponder() async throws {
+        let (proxy, _) = makeSUT()
+        await proxy.load()
+
+        let securityCodeView = try proxy.securityCodeItemView()
+        #expect(securityCodeView.isFirstResponder)
+        try proxy.enterCode("123")
+        #expect(!securityCodeView.isFirstResponder)
+    }
+
     // MARK: - Helpers
 
     private func makeSUT(
@@ -216,6 +229,12 @@ struct StoredCardInputViewControllerProxy {
         )
     }
 
+    func enterCode(_ code: String) throws {
+        let textField = try securityCodeItemView().textField
+        code.forEach { textField.insertText(String($0)) }
+        textField.sendActions(for: .editingChanged)
+    }
+
     func tapPrimaryButton() throws {
         try primaryButton().sendActions(for: .touchUpInside)
     }