firebase-ios-sdk/FirebaseAuth/Tests/Unit/SignUpNewUserTests.swift

// 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

@available(iOS 13, tvOS 13, macOS 10.15, macCatalyst 13, watchOS 7, *)
class SignUpNewUserTests: RPCBaseTests {
  private let kEmailKey = "email"
  private let kTestEmail = "testgmail.com"
  private let kDisplayNameKey = "displayName"
  private let kTestDisplayName = "DisplayName"
  private let kPasswordKey = "password"
  private let kTestPassword = "Password"
  private let kReturnSecureTokenKey = "returnSecureToken"
  private let kExpectedAPIURL =
    "https://www.googleapis.com/identitytoolkit/v3/relyingparty/signupNewUser?key=APIKey"

  /** @fn testSignUpNewUserRequestAnonymous
      @brief Tests the encoding of a sign up new user request when user is signed in anonymously.
   */
  func testSignUpNewUserRequestAnonymous() throws {
    let request = makeSignUpNewUserRequestAnonymous()
    request.returnSecureToken = false
    let issuer = try checkRequest(
      request: request,
      expected: kExpectedAPIURL,
      key: kEmailKey,
      value: nil
    )
    let requestDictionary = try XCTUnwrap(issuer.decodedRequest as? [String: AnyHashable])
    XCTAssertNil(requestDictionary[kDisplayNameKey])
    XCTAssertNil(requestDictionary[kPasswordKey])
    XCTAssertNil(requestDictionary[kReturnSecureTokenKey])
  }

  /** @fn testSignUpNewUserRequestNotAnonymous
      @brief Tests the encoding of a sign up new user request when user is not signed in anonymously.
   */
  func testSignUpNewUserRequestNotAnonymous() throws {
    let request = makeSignUpNewUserRequest()
    let issuer = try checkRequest(
      request: request,
      expected: kExpectedAPIURL,
      key: kEmailKey,
      value: kTestEmail
    )
    let requestDictionary = try XCTUnwrap(issuer.decodedRequest as? [String: AnyHashable])
    XCTAssertEqual(requestDictionary[kDisplayNameKey], kTestDisplayName)
    XCTAssertEqual(requestDictionary[kPasswordKey], kTestPassword)
    XCTAssertTrue(try XCTUnwrap(requestDictionary[kReturnSecureTokenKey] as? Bool))
  }

  /** @fn testSuccessfulSignUp
      @brief This test simulates a complete sign up flow with no errors.
   */
  func testSuccessfulSignUp() throws {
    let kIDTokenKey = "idToken"
    let kTestIDToken = "ID_TOKEN"
    let kTestExpiresIn = "12345"
    let kTestRefreshToken = "REFRESH_TOKEN"
    let kExpiresInKey = "expiresIn"
    let kRefreshTokenKey = "refreshToken"
    var callbackInvoked = false
    var rpcResponse: SignUpNewUserResponse?
    var rpcError: NSError?

    AuthBackend.post(with: makeSignUpNewUserRequest()) { response, error in
      callbackInvoked = true
      rpcResponse = response
      rpcError = error as? NSError
    }

    _ = try rpcIssuer?.respond(withJSON: [
      kIDTokenKey: kTestIDToken,
      kExpiresInKey: kTestExpiresIn,
      kRefreshTokenKey: kTestRefreshToken,
    ])

    XCTAssert(callbackInvoked)
    XCTAssertNil(rpcError)
    XCTAssertEqual(rpcResponse?.refreshToken, kTestRefreshToken)
    let expiresIn = try XCTUnwrap(rpcResponse?.approximateExpirationDate?.timeIntervalSinceNow)
    XCTAssertEqual(expiresIn, 12345, accuracy: 0.1)
  }

  func testSignUpNewUserRequestErrors() throws {
    let kEmailAlreadyInUseErrorMessage = "EMAIL_EXISTS"
    let kEmailSignUpNotAllowedErrorMessage = "OPERATION_NOT_ALLOWED"
    let kPasswordLoginDisabledErrorMessage = "PASSWORD_LOGIN_DISABLED:"
    let kInvalidEmailErrorMessage = "INVALID_EMAIL"
    let kWeakPasswordErrorMessage = "WEAK_PASSWORD : Password should be at least 6 characters"
    let kWeakPasswordClientErrorMessage = "Password should be at least 6 characters"

    try checkBackendError(
      request: makeSignUpNewUserRequest(),
      message: kEmailAlreadyInUseErrorMessage,
      errorCode: AuthErrorCode.emailAlreadyInUse
    )
    try checkBackendError(
      request: makeSignUpNewUserRequest(),
      message: kEmailSignUpNotAllowedErrorMessage,
      errorCode: AuthErrorCode.operationNotAllowed
    )
    try checkBackendError(
      request: makeSignUpNewUserRequest(),
      message: kPasswordLoginDisabledErrorMessage,
      errorCode: AuthErrorCode.operationNotAllowed
    )
    try checkBackendError(
      request: makeSignUpNewUserRequest(),
      message: kInvalidEmailErrorMessage,
      errorCode: AuthErrorCode.invalidEmail
    )
    try checkBackendError(
      request: makeSignUpNewUserRequest(),
      message: kWeakPasswordErrorMessage,
      errorCode: AuthErrorCode.weakPassword,
      errorReason: kWeakPasswordClientErrorMessage
    )
  }

  private func makeSignUpNewUserRequestAnonymous() -> SignUpNewUserRequest {
    return SignUpNewUserRequest(requestConfiguration: makeRequestConfiguration())
  }

  private func makeSignUpNewUserRequest() -> SignUpNewUserRequest {
    return SignUpNewUserRequest(email: kTestEmail,
                                password: kTestPassword,
                                displayName: kTestDisplayName,
                                requestConfiguration: makeRequestConfiguration())
  }
}