Adding Test for Phone Number Authentication in Firebase

Author: srushtisv

FirebaseAuth/Tests/SampleSwift/SwiftApiTests/PhoneAuthTest.swift

@@ -0,0 +1,47 @@
+//
+//  PhoneAuthSignIn.swift
+//  SwiftApiTests
+//
+//  Created by Srushti Vaidya on 12/08/24.
+//  Copyright © 2024 Firebase. All rights reserved.
+//
+
+import Foundation
+import FirebaseAuth
+import XCTest
+
+class PhoneAuthTests: TestsBase {
+
+  let kPhoneNumber = "+19999999999"
+  // This test verification code is specified for the given test phone number in the developer console.
+  let kVerificationCode = "777777"
+
+  func testSignInWithPhoneNumber() throws {
+      Auth.auth().settings?.isAppVerificationDisabledForTesting = true  //toAdd
+      let auth = Auth.auth()
+      let expectation = self.expectation(description: "Sign in with phone number")
+
+      //PhoneAuthProvider used to initiate the Verification process and obtain a verificationID.
+      PhoneAuthProvider.provider().verifyPhoneNumber(kPhoneNumber, uiDelegate: nil) { verificationID, error in
+          if let error{
+            XCTAssertNil(error, "Verification error should be nil")
+            XCTAssertNotNil(verificationID, "Verification ID should not be nil")
+          }
+
+          // Create a credential using the test verification code.
+          let credential = PhoneAuthProvider.provider().credential(withVerificationID: verificationID ?? "", verificationCode: self.kVerificationCode)
+          //signs in using the credential and verifies that the user is signed in correctly by checking auth.currentUser.
+          auth.signIn(with: credential) { authResult, error in
+              if let error{
+                XCTAssertNil(error, "Sign in error should be nil")
+                XCTAssertNotNil(authResult, "AuthResult should not be nil")
+                XCTAssertEqual(auth.currentUser?.phoneNumber, self.kPhoneNumber, "Phone number does not match")
+              }
+              expectation.fulfill()
+          }
+      }
+
+      waitForExpectations(timeout: TestsBase.kExpectationsTimeout)
+      //deleteCurrentUser()
+  }
+}