CheckboxTest.php

<?php

/**
 * @file
 * Definition of Drupal\system\Tests\Form\CheckboxTest.
 */
namespace Drupal\system\Tests\Form;

use Drupal\simpletest\WebTestBase;

/**
 * Tests checkbox element.
 */
class CheckboxTest extends WebTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = array(
    'form_test',
  );
  public static function getInfo() {
    return array(
      'name' => 'Form API checkbox',
      'description' => 'Tests form API checkbox handling of various combinations of #default_value and #return_value.',
      'group' => 'Form API',
    );
  }
  function testFormCheckbox() {

    // Ensure that the checked state is determined and rendered correctly for
    // tricky combinations of default and return values.
    foreach (array(
      FALSE,
      NULL,
      TRUE,
      0,
      '0',
      '',
      1,
      '1',
      'foobar',
      '1foobar',
    ) as $default_value) {

      // Only values that can be used for array indices are supported for
      // #return_value, with the exception of integer 0, which is not supported.
      // @see form_process_checkbox().
      foreach (array(
        '0',
        '',
        1,
        '1',
        'foobar',
        '1foobar',
      ) as $return_value) {
        $form_array = drupal_get_form('form_test_checkbox_type_juggling', $default_value, $return_value);
        $form = drupal_render($form_array);
        if ($default_value === TRUE) {
          $checked = TRUE;
        }
        elseif ($return_value === '0') {
          $checked = $default_value === '0';
        }
        elseif ($return_value === '') {
          $checked = $default_value === '';
        }
        elseif ($return_value === 1 || $return_value === '1') {
          $checked = $default_value === 1 || $default_value === '1';
        }
        elseif ($return_value === 'foobar') {
          $checked = $default_value === 'foobar';
        }
        elseif ($return_value === '1foobar') {
          $checked = $default_value === '1foobar';
        }
        $checked_in_html = strpos($form, 'checked') !== FALSE;
        $message = format_string('#default_value is %default_value #return_value is %return_value.', array(
          '%default_value' => var_export($default_value, TRUE),
          '%return_value' => var_export($return_value, TRUE),
        ));
        $this
          ->assertIdentical($checked, $checked_in_html, $message);
      }
    }

    // Ensure that $form_state['values'] is populated correctly for a checkboxes
    // group that includes a 0-indexed array of options.
    $results = json_decode($this
      ->drupalPost('form-test/checkboxes-zero', array(), 'Save'));
    $this
      ->assertIdentical($results->checkbox_off, array(
      0,
      0,
      0,
    ), 'All three in checkbox_off are zeroes: off.');
    $this
      ->assertIdentical($results->checkbox_zero_default, array(
      '0',
      0,
      0,
    ), 'The first choice is on in checkbox_zero_default');
    $this
      ->assertIdentical($results->checkbox_string_zero_default, array(
      '0',
      0,
      0,
    ), 'The first choice is on in checkbox_string_zero_default');
    $edit = array(
      'checkbox_off[0]' => '0',
    );
    $results = json_decode($this
      ->drupalPost('form-test/checkboxes-zero', $edit, 'Save'));
    $this
      ->assertIdentical($results->checkbox_off, array(
      '0',
      0,
      0,
    ), 'The first choice is on in checkbox_off but the rest is not');

    // Ensure that each checkbox is rendered correctly for a checkboxes group
    // that includes a 0-indexed array of options.
    $this
      ->drupalPost('form-test/checkboxes-zero/0', array(), 'Save');
    $checkboxes = $this
      ->xpath('//input[@type="checkbox"]');
    foreach ($checkboxes as $checkbox) {
      $checked = isset($checkbox['checked']);
      $name = (string) $checkbox['name'];
      $this
        ->assertIdentical($checked, $name == 'checkbox_zero_default[0]' || $name == 'checkbox_string_zero_default[0]', format_string('Checkbox %name correctly checked', array(
        '%name' => $name,
      )));
    }
    $edit = array(
      'checkbox_off[0]' => '0',
    );
    $this
      ->drupalPost('form-test/checkboxes-zero/0', $edit, 'Save');
    $checkboxes = $this
      ->xpath('//input[@type="checkbox"]');
    foreach ($checkboxes as $checkbox) {
      $checked = isset($checkbox['checked']);
      $name = (string) $checkbox['name'];
      $this
        ->assertIdentical($checked, $name == 'checkbox_off[0]' || $name == 'checkbox_zero_default[0]' || $name == 'checkbox_string_zero_default[0]', format_string('Checkbox %name correctly checked', array(
        '%name' => $name,
      )));
    }
  }

}