Exception | --PHPUnit2_Framework_AssertionFailedError | --PHPUnit2_Framework_ComparisonFailure
PHPUnit2_Framework_ComparisonFailure diffEqual( mixed $expected, mixed $actual, [string $message = ''])
PHPUnit2_Framework_ComparisonFailure diffIdentical( mixed $expected, mixed $actual, [string $message = ''])
string shortenedExport( mixed $value)
string shortenedString( string $string)