[auth-swift] AuthAppCredentialTests.swift (#11336)

Author: paulb777

FirebaseAuth/Sources/Swift/SystemService/AuthAppCredential.swift

@@ -24,6 +24,8 @@ private let kReceiptKey = "receipt"
  */
 private let kSecretKey = "secret"
 
+// TODO: Remove objc public after Sample app is replaced.
+
 /** @class FIRAuthAppCredential
     @brief A class represents a credential that proves the identity of the app.
  */

FirebaseAuth/Tests/Unit/AuthAppCredentialTests.swift

@@ -0,0 +1,46 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import Foundation
+import XCTest
+
+@testable import FirebaseAuth
+
+class AuthAppCredentialTests: XCTestCase {
+  private let kReceipt = "RECEIPT"
+  private let kSecret = "SECRET"
+
+  /** @fn testInitializer
+      @brief Tests the initializer of the class.
+   */
+  func testInitializer() {
+    let credential = AuthAppCredential(receipt: kReceipt, secret: kSecret)
+    XCTAssertEqual(credential.receipt, kReceipt)
+    XCTAssertEqual(credential.secret, kSecret)
+  }
+
+  /** @fn testSecureCoding
+      @brief Tests the implementation of NSSecureCoding protocol.
+   */
+  func testSecureCoding() throws {
+    let credential = AuthAppCredential(receipt: kReceipt, secret: kSecret)
+    let data = try NSKeyedArchiver.archivedData(
+      withRootObject: credential,
+      requiringSecureCoding: true
+    )
+    let otherCredential = NSKeyedUnarchiver.unarchiveObject(with: data) as? AuthAppCredential
+    XCTAssertEqual(otherCredential?.receipt, kReceipt)
+    XCTAssertEqual(otherCredential?.secret, kSecret)
+  }
+}