QR Code Login Flow (#2767)

Co-authored-by: Hugh Nimmo-Smith <hughns@users.noreply.github.com>
Co-authored-by: Hugh Nimmo-Smith <hughns@element.io>

UnitTests/Sources/AVMetadataMachineReadableCodeObjectExtensionsTest.swift

@@ -0,0 +1,49 @@
+//
+// Copyright 2024 New Vector Ltd
+//
+// 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 AVKit
+import XCTest
+
+@testable import ElementX
+
+final class AVMetadataMachineReadableCodeObjectExtensionsTest: XCTestCase {
+    func testDecoQRCodeVersion8() {
+        // swiftlint:disable:next line_length
+        let rawDataHexString = "4a34d415452495802048bf94b094096e57d3ea43545604cf59b1704879d295cf7fdd99c62df7866da36005668747470733a2f2f73796e617073652d6f6964632e656c656d656e742e6465762f5f73796e617073652f636c69656e742f72656e64657a766f75732f3031485a32394d345936374a4e315658505759464e355a363638002168747470733a2f2f73796e617073652d6f6964632e656c656d656e742e6465762f0ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11ec11ec"
+        // swiftlint:disable:next line_length
+        let expectedDecodedString = "4d415452495802048bf94b094096e57d3ea43545604cf59b1704879d295cf7fdd99c62df7866da36005668747470733a2f2f73796e617073652d6f6964632e656c656d656e742e6465762f5f73796e617073652f636c69656e742f72656e64657a766f75732f3031485a32394d345936374a4e315658505759464e355a363638002168747470733a2f2f73796e617073652d6f6964632e656c656d656e742e6465762f"
+        let symbolVersion = 8
+        
+        guard let data = Data(hexString: rawDataHexString) else {
+            XCTFail("Could not initialise the raw data")
+            return
+        }
+        
+        guard let resultData = AVMetadataMachineReadableCodeObject.removeQrProtocolData(data, symbolVersion: symbolVersion) else {
+            XCTFail("Could not remove the protocol data")
+            return
+        }
+        
+        let resultString = resultData.map { String(format: "%02x", $0) }.joined()
+        XCTAssertEqual(expectedDecodedString, resultString)
+        
+        guard let expectedResultData = Data(hexString: expectedDecodedString) else {
+            XCTFail("Could not initialise the decoded data")
+            return
+        }
+        XCTAssertEqual(expectedResultData, resultData)
+    }
+}