chore: add UI tests

example/ios/AdyenExample.xcodeproj/project.pbxproj

@@ -618,6 +618,7 @@
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"DEBUG=1",
 					"$(inherited)",
+					_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION,
 				);
 				GCC_SYMBOLS_PRIVATE_EXTERN = NO;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
@@ -638,6 +639,11 @@
 				);
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
+				OTHER_LDFLAGS = (
+					"$(inherited)",
+					"-Wl",
+					"-ld_classic",
+				);
 				REACT_NATIVE_PATH = "${PODS_ROOT}/../../node_modules/react-native";
 				SDKROOT = iphoneos;
 			};
@@ -680,6 +686,10 @@
 				"EXCLUDED_ARCHS[sdk=iphonesimulator*]" = "";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"$(inherited)",
+					_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION,
+				);
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
@@ -697,6 +707,11 @@
 					"\"$(inherited)\"",
 				);
 				MTL_ENABLE_DEBUG_INFO = NO;
+				OTHER_LDFLAGS = (
+					"$(inherited)",
+					"-Wl",
+					"-ld_classic",
+				);
 				REACT_NATIVE_PATH = "${PODS_ROOT}/../../node_modules/react-native";
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;

example/ios/AdyenExampleTests/DropInNativeModuleTests.swift

@@ -0,0 +1,170 @@
+//
+// Copyright (c) 2024 Adyen N.V.
+//
+// This file is open source and available under the MIT license. See the LICENSE file for more info.
+//
+
+import Adyen
+@testable import adyen_react_native
+import XCTest
+
+final class DropInNativeModuleTests: XCTestCase {
+
+  let shortPaymentMethods: NSDictionary = ["paymentMethods": [
+    [
+      "type": "scheme",
+      "name": "Cards"
+    ],
+    [
+      "type": "klarna",
+      "name": "Klarna"
+    ],
+  ]]
+
+  let fullPaymentMethods: NSDictionary = [
+    "paymentMethods": [
+      [
+        "type": "scheme",
+        "name": "Cards"
+      ],
+      [
+        "type": "klarna",
+        "name": "Klarna"
+      ],
+    ],
+    "storedPaymentMethods": [
+      [
+        "brand": "visa",
+        "expiryMonth": "03",
+        "expiryYear": "30",
+        "id": "J469JCZC5KPBGP65",
+        "lastFour": "6746",
+        "name": "VISA",
+        "supportedShopperInteractions": [
+          "Ecommerce",
+          "ContAuth"
+        ],
+        "type": "scheme"
+      ],
+    ]
+  ]
+
+
+  func testSimpleList() throws {
+      // GIVEN
+    let sut = DropInModule()
+    let config: NSDictionary = ["clientKey": "live_XXXXXXXXXX"]
+
+
+      // WHEN
+    sut.open(shortPaymentMethods, configuration: config)
+
+      // THEN
+    XCTAssertTrue(try isPresentingDropIn())
+
+    let topView = try XCTUnwrap(getDropInView() as? UITableViewController)
+    XCTAssertEqual(getNumberOfElement(in: topView.tableView, section: 0), 2)
+    XCTAssertEqual(topView.title, "Payment Methods")
+
+    // TEAR DOWN
+    dissmissDropIn()
+  }
+
+  func testStoredList() throws {
+      // GIVEN
+    let sut = DropInModule()
+    let config: NSDictionary = [
+      "clientKey": "live_XXXXXXXXXX",
+    ]
+
+      // WHEN
+    sut.open(fullPaymentMethods, configuration: config)
+
+      // THEN
+    XCTAssertTrue(try isPresentingDropIn())
+
+    let topView = try XCTUnwrap(getDropInView())
+    XCTAssertEqual(topView.title, "AdyenExample")
+
+    // TEAR DOWN
+    dissmissDropIn()
+  }
+
+  func testTitleSetter() throws {
+      // GIVEN
+    let sut = DropInModule()
+    let config: NSDictionary = [
+      "clientKey": "live_XXXXXXXXXX",
+      "dropin": [
+        "title": "MY_TITLE"
+      ]
+    ]
+
+      // WHEN
+    sut.open(fullPaymentMethods, configuration: config)
+
+      // THEN
+    XCTAssertTrue(try isPresentingDropIn())
+
+    let topView = try XCTUnwrap(getDropInView())
+    XCTAssertEqual(topView.title, "MY_TITLE")
+
+    // TEAR DOWN
+    dissmissDropIn()
+  }
+
+  func testSkipingPreset() throws {
+      // GIVEN
+    let sut = DropInModule()
+    let config: NSDictionary = [
+      "clientKey": "live_XXXXXXXXXX",
+      "dropin": [
+        "showPreselectedStoredPaymentMethod": false
+      ]
+    ]
+
+      // WHEN
+    sut.open(fullPaymentMethods, configuration: config)
+
+      // THEN
+    XCTAssertTrue(try isPresentingDropIn())
+
+    let topView = try XCTUnwrap(getDropInView() as? UITableViewController)
+    XCTAssertEqual(getNumberOfElement(in: topView.tableView, section: 0), 1)
+    XCTAssertEqual(getNumberOfElement(in: topView.tableView, section: 1), 2)
+    XCTAssertEqual(topView.title, "Payment Methods")
+
+    // TEAR DOWN
+    dissmissDropIn()
+  }
+
+  func isPresentingDropIn() throws -> Bool {
+    let dropin = try waitUntilTopPresenter(isOfType: UINavigationController.self)
+    return dropin is AdyenObserver
+  }
+
+  func getDropInView() -> UIViewController? {
+
+    var controller: UIViewController?
+    var nextController: UIViewController? = UIApplication.shared.keyWindow?.rootViewController?.presentedViewController
+
+    while nextController != nil {
+      controller = nextController
+      nextController = nextController?.children.first
+    }
+    return controller
+  }
+
+  func getNumberOfElement(in tableView: UITableView, section: Int) -> Int? {
+    tableView.dataSource?.tableView(tableView, numberOfRowsInSection: section)
+  }
+
+  func dissmissDropIn() {
+    let expectation = expectation(description: "DropIn closing")
+    UIApplication.shared.keyWindow?.rootViewController?.dismiss(animated: false, completion: {
+      expectation.fulfill()
+    })
+    wait(for: [expectation])
+  }
+
+}

example/ios/AdyenExampleTests/UIView+Search.swift

@@ -0,0 +1,37 @@
+//
+// Copyright (c) 2024 Adyen N.V.
+//
+// This file is open source and available under the MIT license. See the LICENSE file for more info.
+//
+
+import UIKit
+
+internal extension UIView {
+    func findView<T: UIView>(with accessibilityIdentifier: String) -> T? {
+        if self.accessibilityIdentifier == accessibilityIdentifier {
+            return self as? T
+        }
+
+        for subview in subviews {
+            if let v = subview.findView(with: accessibilityIdentifier) {
+                return v as? T
+            }
+        }
+
+        return nil
+    }
+
+    func findView<T: UIView>(by lastAccessibilityIdentifierComponent: String) -> T? {
+        if self.accessibilityIdentifier?.hasSuffix(lastAccessibilityIdentifierComponent) == true {
+            return self as? T
+        }
+
+        for subview in subviews {
+            if let v = subview.findView(by: lastAccessibilityIdentifierComponent) {
+                return v as? T
+            }
+        }
+
+        return nil
+    }
+}

example/ios/AdyenExampleTests/UIViewController+Search.swift

@@ -0,0 +1,44 @@
+//
+// Copyright (c) 2024 Adyen N.V.
+//
+// This file is open source and available under the MIT license. See the LICENSE file for more info.
+//
+
+import UIKit
+import XCTest
+@_spi(AdyenInternal) @testable import Adyen
+
+public extension UIViewController {
+
+    /// Returns the first child of the viewControllers children that matches the type
+    ///
+    /// - Parameters:
+    ///  - type: The type of the viewController
+    func firstChild<T: UIViewController>(of type: T.Type) -> T? {
+        if let result = self as? T {
+            return result
+        }
+
+        for child in self.children {
+            if let result = child.firstChild(of: T.self) {
+                return result
+            }
+        }
+
+        return nil
+    }
+
+    /// Returns the current top viewController
+    ///
+    /// - Throws: if there is no rootViewController can be found on the window
+    static func topPresenter() throws -> UIViewController {
+        let rootViewController = try XCTUnwrap(UIApplication.shared.adyen.mainKeyWindow?.rootViewController)
+        return rootViewController.adyen.topPresenter
+    }
+}
+
+extension UIViewController: PresentationDelegate {
+    public func present(component: PresentableComponent) {
+        self.present(component.viewController, animated: false, completion: nil)
+    }
+}

example/ios/AdyenExampleTests/Wait+UIKit.swift

@@ -0,0 +1,60 @@
+  //
+  // Copyright (c) 2024 Adyen N.V.
+  //
+  // This file is open source and available under the MIT license. See the LICENSE file for more info.
+  //
+
+  import UIKit
+  import XCTest
+
+  extension XCTestCase {
+
+      /// Waits for a viewController of a certain type to become a child of another viewController
+      ///
+      /// Instead of waiting for a specific amount of time it polls if the expecation is returning true in time intervals of 10ms until the timeout is reached.
+      /// Use it whenever a value change is not guaranteed to be instant or happening after a short amount of time.
+      ///
+      /// - Parameters:
+      ///   - ofType: the type of the expected child viewController
+      ///   - viewController: the parent viewController
+      ///   - timeout: the maximum time (in seconds)  to wait.
+      @discardableResult
+      func waitForViewController<T: UIViewController>(
+          ofType: T.Type,
+          toBecomeChildOf viewController: UIViewController,
+          timeout: TimeInterval = 60
+      ) throws -> T {
+
+          wait(
+              until: { viewController.firstChild(of: T.self) != nil },
+              timeout: timeout,
+              message: "\(String(describing: T.self)) should appear on \(String(describing: viewController.self)) before timeout \(timeout)s"
+          )
+
+          return try XCTUnwrap(viewController.firstChild(of: T.self))
+      }
+
+      /// Waits for a viewController of a certain type to become a child of another viewController
+      ///
+      /// Instead of waiting for a specific amount of time it polls if the expecation is returning true in time intervals of 10ms until the timeout is reached.
+      /// Use it whenever a value change is not guaranteed to be instant or happening after a short amount of time.
+      ///
+      /// - Parameters:
+      ///   - ofType: the type of the expected child viewController
+      ///   - viewController: the parent viewController
+      ///   - timeout: the maximum time (in seconds)  to wait.
+      @discardableResult
+      func waitUntilTopPresenter<T: UIViewController>(
+          isOfType: T.Type,
+          timeout: TimeInterval = 60
+      ) throws -> T {
+
+          wait(
+              until: { (try? UIViewController.topPresenter() is T) ?? false },
+              timeout: timeout,
+              message: "\(String(describing: T.self)) should become top presenter before timeout \(timeout)s"
+          )
+
+          return try XCTUnwrap(UIViewController.topPresenter() as? T)
+      }
+  }