Add Accessbility identifier to passkeys button (#818)

Author: Ecarrion

WordPressAuthenticator/Unified Auth/View Related/2FA/TwoFAViewController.swift

@@ -556,7 +556,9 @@ private extension TwoFAViewController {
     /// Configure the security key link cell.
     ///
     func configureEnterSecurityKeyLinkButton(_ cell: TextLinkButtonTableViewCell) {
-        cell.configureButton(text: WordPressAuthenticator.shared.displayStrings.securityKeyButtonTitle, icon: .keyIcon)
+        cell.configureButton(text: WordPressAuthenticator.shared.displayStrings.securityKeyButtonTitle,
+                             icon: .keyIcon,
+                             accessibilityIdentifier: TextLinkButtonTableViewCell.Constants.passkeysID)
 
         cell.actionHandler = { [weak self] in
             guard let self = self else { return }

WordPressAuthenticator/Unified Auth/View Related/Reusable Views/TextLinkButtonTableViewCell.swift

@@ -27,14 +27,19 @@ class TextLinkButtonTableViewCell: UITableViewCell {
         styleBorder()
     }
 
-    public func configureButton(text: String?, icon: UIImage? = nil, accessibilityTrait: UIAccessibilityTraits = .button, showBorder: Bool = false) {
+    public func configureButton(text: String?,
+                                icon: UIImage? = nil,
+                                accessibilityTrait: UIAccessibilityTraits = .button,
+                                showBorder: Bool = false,
+                                accessibilityIdentifier: String? = nil) {
         button.setTitle(text, for: .normal)
 
         let buttonTitleColor = WordPressAuthenticator.shared.unifiedStyle?.textButtonColor ?? WordPressAuthenticator.shared.style.textButtonColor
         let buttonHighlightColor = WordPressAuthenticator.shared.unifiedStyle?.textButtonHighlightColor ?? WordPressAuthenticator.shared.style.textButtonHighlightColor
         button.setTitleColor(buttonTitleColor, for: .normal)
         button.setTitleColor(buttonHighlightColor, for: .highlighted)
         button.accessibilityTraits = accessibilityTrait
+        button.accessibilityIdentifier = accessibilityIdentifier
 
         borderView.isHidden = !showBorder
 
@@ -62,3 +67,10 @@ private extension TextLinkButtonTableViewCell {
         borderWidth.constant = WPStyleGuide.hairlineBorderWidth
     }
 }
+
+// MARK: - Constants
+extension TextLinkButtonTableViewCell {
+    struct Constants {
+        static let passkeysID = "Passkeys"
+    }
+}