function FormsTestCase::testRequiredFields

Check several empty values for required forms elements.

Carriage returns, tabs, spaces, and unchecked checkbox elements are not valid content for a required field.

If the form field is found in form_get_errors() then the test pass.

File

modules/simpletest/tests/form.test, line 30

Class

FormsTestCase

@file Unit tests for the Drupal Form API.

Code

function testRequiredFields() {
    // Originates from http://drupal.org/node/117748
    // Sets of empty strings and arrays.
    $empty_strings = array(
        '""' => "",
        '"\\n"' => "\n",
        '" "' => " ",
        '"\\t"' => "\t",
        '" \\n\\t "' => " \n\t ",
        '"\\n\\n\\n\\n\\n"' => "\n\n\n\n\n",
    );
    $empty_arrays = array(
        'array()' => array(),
    );
    $empty_checkbox = array(
        NULL,
    );
    $elements['textfield']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'textfield',
    );
    $elements['textfield']['empty_values'] = $empty_strings;
    $elements['password']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'password',
    );
    $elements['password']['empty_values'] = $empty_strings;
    $elements['password_confirm']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'password_confirm',
    );
    // Provide empty values for both password fields.
    foreach ($empty_strings as $key => $value) {
        $elements['password_confirm']['empty_values'][$key] = array(
            'pass1' => $value,
            'pass2' => $value,
        );
    }
    $elements['textarea']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'textarea',
    );
    $elements['textarea']['empty_values'] = $empty_strings;
    $elements['radios']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'radios',
        '#options' => array(
            '' => t('None'),
            $this->randomName(),
            $this->randomName(),
            $this->randomName(),
        ),
    );
    $elements['radios']['empty_values'] = $empty_arrays;
    $elements['checkbox']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'checkbox',
        '#required' => TRUE,
    );
    $elements['checkbox']['empty_values'] = $empty_checkbox;
    $elements['checkboxes']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'checkboxes',
        '#options' => array(
            $this->randomName(),
            $this->randomName(),
            $this->randomName(),
        ),
    );
    $elements['checkboxes']['empty_values'] = $empty_arrays;
    $elements['select']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'select',
        '#options' => array(
            '' => t('None'),
            $this->randomName(),
            $this->randomName(),
            $this->randomName(),
        ),
    );
    $elements['select']['empty_values'] = $empty_strings;
    $elements['file']['element'] = array(
        '#title' => $this->randomName(),
        '#type' => 'file',
    );
    $elements['file']['empty_values'] = $empty_strings;
    // Regular expression to find the expected marker on required elements.
    $required_marker_preg = '@<label.*<span class="form-required" title="This field is required\\.">\\*</span></label>@';
    // Go through all the elements and all the empty values for them.
    foreach ($elements as $type => $data) {
        foreach ($data['empty_values'] as $key => $empty) {
            foreach (array(
                TRUE,
                FALSE,
            ) as $required) {
                $form_id = $this->randomName();
                $form = array();
                $form_state = form_state_defaults();
                form_clear_error();
                $form['op'] = array(
                    '#type' => 'submit',
                    '#value' => t('Submit'),
                );
                $element = $data['element']['#title'];
                $form[$element] = $data['element'];
                $form[$element]['#required'] = $required;
                $form_state['input'][$element] = $empty;
                $form_state['input']['form_id'] = $form_id;
                $form_state['method'] = 'post';
                // The form token CSRF protection should not interfere with this test,
                // so we bypass it by marking this test form as programmed.
                $form_state['programmed'] = TRUE;
                drupal_prepare_form($form_id, $form, $form_state);
                drupal_process_form($form_id, $form, $form_state);
                $errors = form_get_errors();
                // Form elements of type 'radios' throw all sorts of PHP notices
                // when you try to render them like this, so we ignore those for
                // testing the required marker.
                // @todo Fix this work-around (http://drupal.org/node/588438).
                $form_output = $type == 'radios' ? '' : drupal_render($form);
                if ($required) {
                    // Make sure we have a form error for this element.
                    $this->assertTrue(isset($errors[$element]), "Check empty({$key}) '{$type}' field '{$element}'");
                    if (!empty($form_output)) {
                        // Make sure the form element is marked as required.
                        $this->assertTrue(preg_match($required_marker_preg, $form_output), "Required '{$type}' field is marked as required");
                    }
                }
                else {
                    if (!empty($form_output)) {
                        // Make sure the form element is *not* marked as required.
                        $this->assertFalse(preg_match($required_marker_preg, $form_output), "Optional '{$type}' field is not marked as required");
                    }
                    if ($type == 'select') {
                        // Select elements are going to have validation errors with empty
                        // input, since those are illegal choices. Just make sure the
                        // error is not "field is required".
                        $this->assertTrue(empty($errors[$element]) || strpos('field is required', $errors[$element]) === FALSE, "Optional '{$type}' field '{$element}' is not treated as a required element");
                    }
                    else {
                        // Make sure there is *no* form error for this element.
                        $this->assertTrue(empty($errors[$element]), "Optional '{$type}' field '{$element}' has no errors with empty input");
                    }
                }
            }
        }
    }
    // Clear the expected form error messages so they don't appear as exceptions.
    drupal_get_messages();
}