public function testAssertValidKeysInvalidKey() {
$options = array(
'testA' => 1,
'testB' => 2,
'testD' => 3,
);
$valid = array(
'testA',
'testB',
'testC',
);
try {
$validated = PHPUnit_Util_XML::assertValidKeys($options, $valid);
$this
->fail();
} catch (PHPUnit_Framework_Exception $e) {
$this
->assertEquals('Unknown key(s): testD', $e
->getMessage());
}
}