class UserAccountFormFieldsTest

class UserAccountFormFieldsTest extends KernelTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    public static $modules = [
        'system',
        'user',
        'field',
    ];
    
    /**
     * Tests the root user account form section in the "Configure site" form.
     */
    public function testInstallConfigureForm() {
        require_once $this->root . '/core/includes/install.core.inc';
        require_once $this->root . '/core/includes/install.inc';
        $install_state = install_state_defaults();
        $form_state = new FormState();
        $form_state->addBuildInfo('args', [
            &$install_state,
        ]);
        $form = $this->container
            ->get('form_builder')
            ->buildForm('Drupal\\Core\\Installer\\Form\\SiteConfigureForm', $form_state);
        // Verify name and pass field order.
        $this->assertFieldOrder($form['admin_account']['account']);
        // Verify that web browsers may autocomplete the email value and
        // autofill/prefill the name and pass values.
        foreach ([
            'mail',
            'name',
            'pass',
        ] as $key) {
            $this->assertFalse(isset($form['account'][$key]['#attributes']['autocomplete']), "'{$key}' field: 'autocomplete' attribute not found.");
        }
    }
    
    /**
     * Tests the user registration form.
     */
    public function testUserRegistrationForm() {
        // Install default configuration; required for AccountFormController.
        $this->installConfig([
            'user',
        ]);
        // Disable email confirmation to unlock the password field.
        $this->config('user.settings')
            ->set('verify_mail', FALSE)
            ->save();
        $form = $this->buildAccountForm('register');
        // Verify name and pass field order.
        $this->assertFieldOrder($form['account']);
        // Verify that web browsers may autocomplete the email value and
        // autofill/prefill the name and pass values.
        foreach ([
            'mail',
            'name',
            'pass',
        ] as $key) {
            $this->assertFalse(isset($form['account'][$key]['#attributes']['autocomplete']), "'{$key}' field: 'autocomplete' attribute not found.");
        }
    }
    
    /**
     * Tests the user edit form.
     */
    public function testUserEditForm() {
        // Install default configuration; required for AccountFormController.
        $this->installConfig([
            'user',
        ]);
        // Install the router table and then rebuild.
        \Drupal::service('router.builder')->rebuild();
        $form = $this->buildAccountForm('default');
        // Verify name and pass field order.
        $this->assertFieldOrder($form['account']);
        // Verify that autocomplete is off on all account fields.
        foreach ([
            'mail',
            'name',
            'pass',
        ] as $key) {
            $this->assertIdentical($form['account'][$key]['#attributes']['autocomplete'], 'off', "'{$key}' field: 'autocomplete' attribute is 'off'.");
        }
    }
    
    /**
     * Asserts that the 'name' form element is directly before the 'pass' element.
     *
     * @param array $elements
     *   A form array section that contains the user account form elements.
     */
    protected function assertFieldOrder(array $elements) {
        $name_index = 0;
        $name_weight = 0;
        $pass_index = 0;
        $pass_weight = 0;
        $index = 0;
        foreach ($elements as $key => $element) {
            if ($key === 'name') {
                $name_index = $index;
                $name_weight = $element['#weight'];
                $this->assertTrue($element['#sorted'], "'name' field is #sorted.");
            }
            elseif ($key === 'pass') {
                $pass_index = $index;
                $pass_weight = $element['#weight'];
                $this->assertTrue($element['#sorted'], "'pass' field is #sorted.");
            }
            $index++;
        }
        $this->assertEqual($name_index, $pass_index - 1, "'name' field ({$name_index}) appears before 'pass' field ({$pass_index}).");
        $this->assertTrue($name_weight < $pass_weight, "'name' field weight ({$name_weight}) is smaller than 'pass' field weight ({$pass_weight}).");
    }
    
    /**
     * Builds the user account form for a given operation.
     *
     * @param string $operation
     *   The entity operation; one of 'register' or 'default'.
     *
     * @return array
     *   The form array.
     */
    protected function buildAccountForm($operation) {
        // @see HtmlEntityFormController::getFormObject()
        $entity_type = 'user';
        $fields = [];
        if ($operation != 'register') {
            $fields['uid'] = 2;
        }
        $entity = $this->container
            ->get('entity_type.manager')
            ->getStorage($entity_type)
            ->create($fields);
        // @see EntityFormBuilder::getForm()
        return $this->container
            ->get('entity.form_builder')
            ->getForm($entity, $operation);
    }

}