function testArrayInputInvalidCharsRemoval()
{
$invalidInputs = array(chr(240), chr(192), chr(200) . chr(210), 'something' . chr(244));
$field = new CM_FormField_Text(['name' => 'foo']);
foreach ($invalidInputs as $input) {
$filtered = $field->filterInput($input);
$this->assertNotSame($filtered, $input);
}
}
