FOF30\TransparentAuthentication\TransparentAuthentication::addAuthenticationMethod PHP Method

    public function addAuthenticationMethod($method)
    {
        if (!in_array($method, $this->authenticationMethods)) {
            $this->authenticationMethods[] = $method;
        }
    }

 public function testAddAuthenticationMethod()
 {
     $this->auth->setAuthenticationMethods(array(TransparentAuthentication::Auth_HTTPBasicAuth_Plaintext));
     // Try adding an existing method
     $this->auth->addAuthenticationMethod(TransparentAuthentication::Auth_HTTPBasicAuth_Plaintext);
     $this->assertEquals(array(TransparentAuthentication::Auth_HTTPBasicAuth_Plaintext), ReflectionHelper::getValue($this->auth, 'authenticationMethods'));
     // Try adding a non-existent method
     $this->auth->addAuthenticationMethod(TransparentAuthentication::Auth_HTTPBasicAuth_TOTP);
     $this->assertEquals(array(TransparentAuthentication::Auth_HTTPBasicAuth_Plaintext, TransparentAuthentication::Auth_HTTPBasicAuth_TOTP), ReflectionHelper::getValue($this->auth, 'authenticationMethods'));
     // Try adding an existing method again
     $this->auth->addAuthenticationMethod(TransparentAuthentication::Auth_HTTPBasicAuth_Plaintext);
     $this->assertEquals(array(TransparentAuthentication::Auth_HTTPBasicAuth_Plaintext, TransparentAuthentication::Auth_HTTPBasicAuth_TOTP), ReflectionHelper::getValue($this->auth, 'authenticationMethods'));
 }