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import attr


@attr.s(frozen=True, slots=True)
class Test(object):
    """Data about a test and its expectations.

    Note that this is inherently platform specific, as expectations are platform specific."""
    test_path = attr.ib(type=str)
    expected_text_path = attr.ib(default=None, type=str)
    expected_image_path = attr.ib(default=None, type=str)
    expected_checksum_path = attr.ib(default=None, type=str)
    expected_audio_path = attr.ib(default=None, type=str)
    reference_files = attr.ib(default=None, type=list)
    is_http_test = attr.ib(default=None, type=bool)
    is_websocket_test = attr.ib(default=None, type=bool)
    is_wpt_test = attr.ib(default=None, type=bool)

    @property
    def needs_http_server(self):
        return self.is_http_test or self.is_websocket_test

    @property
    def needs_websocket_server(self):
        return self.is_websocket_test

    @property
    def needs_wpt_server(self):
        return self.is_wpt_test

    @property
    def needs_any_server(self):
        return self.needs_http_server or self.needs_websocket_server or self.needs_wpt_server