Bug 815487 - Detect missing xpcshell.ini from mach; r=ted

    unicode_type = str

# This should probably be consolidated with similar classes in other test

# runners.

class InvalidTestPathError(Exception):

    """Exception raised when the test path is not valid."""

class XPCShellRunner(MozbuildObject):

    """Run xpcshell tests."""

    def run_suite(self, **kwargs):

        test_dir = os.path.join(self.topobjdir, '_tests', 'xpcshell',

                os.path.dirname(relative_dir))

        xpcshell_ini_file = os.path.join(test_dir, 'xpcshell.ini')

        if not os.path.exists(xpcshell_ini_file):

            raise InvalidTestPathError('An xpcshell.ini could not be found '

                'for the passed test path. Please select a path whose '

                'directory contains an xpcshell.ini file. It is possible you '

                'received this error because the tree is not built or tests '

                'are not enabled.')

        args = {

            'debug': debug,

            'interactive': interactive,

        self._ensure_state_subdir_exists('.')

        xpcshell = self._spawn(XPCShellRunner)

        xpcshell.run_test(**params)

        try:

            return xpcshell.run_test(**params)

        except InvalidTestPathError as e:

            print(e.message)

            return 1