Excerpt from https://gist.github.com/zethraeus/34d2aa882c106d8f44ecda6a976361db#file-betteronboardingmanagertests-swift

BetterOnboardingManagerTestsExcerpt.swift

func testPasswordCanNotContainUsername() {
  let (didPass, issue) = OnboardingManager.validatePassword(password: "ValidUsername$123",
                                                            username: "ValidUsername",
                                                            email: "valid@example.com",
                                                            phoneNumber: "+11235554321")

  XCTAssertFalse(didPass)
  XCTAssertEqual(issue, PasswordIssue.containsUsername)
}