Make sure the validation callbacks works.
protected function _testUiValidation() {
$view = views_get_view('test_filter_date_between');
$this
->drupalLogin($this
->drupalCreateUser(array(
'administer views',
'administer site configuration',
)));
menu_router_rebuild();
$this
->drupalGet('admin/structure/views/view/test_filter_date_between/edit');
$this
->drupalGet('admin/structure/views/nojs/config-item/test_filter_date_between/default/filter/created');
$edit = array();
// Generate a definitive wrong value, which should be checked by validation.
$edit['options[value][value]'] = $this
->randomString() . '-------';
$this
->drupalPost(NULL, $edit, t('Apply'));
$this
->assertText(t('Invalid date format.'), 'Make sure that validation is runned and the invalidate date format is identified.');
}