PHPUnit_Framework_Assert::assertStringNotEqualsFile PHP Method

    public static function assertStringNotEqualsFile($expectedFile, $actualString, $message = '', $canonicalize = false, $ignoreCase = false)
    {
        static::assertFileExists($expectedFile, $message);
        static::assertNotEquals(file_get_contents($expectedFile), $actualString, $message, 0, 10, $canonicalize, $ignoreCase);
    }

/**
 * Asserts that the contents of a string is not equal
 * to the contents of a file.
 *
 * @param  string  $expectedFile
 * @param  string  $actualString
 * @param  string  $message
 * @param  boolean $canonicalize
 * @param  boolean $ignoreCase
 * @since  Method available since Release 3.3.0
 */
function assertStringNotEqualsFile($expectedFile, $actualString, $message = '', $canonicalize = FALSE, $ignoreCase = FALSE)
{
    return PHPUnit_Framework_Assert::assertStringNotEqualsFile($expectedFile, $actualString, $message, $canonicalize, $ignoreCase);
}