def test_dash_stream(session):
    mpd = Mock(url=None)
    stream = DASHStream(session, mpd)
    with pytest.raises(TypeError) as cm:
        stream.to_url()
    assert str(cm.value) == "<DASHStream [dash]> cannot be translated to a URL"
    with pytest.raises(TypeError) as cm:
        stream.to_manifest_url()
    assert str(
        cm.value
    ) == "<DASHStream [dash]> cannot be translated to a manifest URL"
def test_dash_stream_url(session, common_args):
    # DASHStream requires an MPD instance as input:
    # The URL of the MPD instance was already prepared by DASHStream.parse_manifest, so copy this behavior here.
    # This test verifies that session params are added to the URL, without duplicates.
    args = common_args.copy()
    args.update(url="http://host/stream.mpd?foo=bar")
    url = session.http.prepare_new_request(**args).url
    mpd = Mock(url=url)
    stream = DASHStream(session, mpd, **common_args)
    assert stream.to_url(
    ) == "http://host/stream.mpd?foo=bar&queryparamkey=queryparamval"
    with pytest.raises(TypeError) as cm:
        stream.to_manifest_url()
    assert str(
        cm.value
    ) == "<DASHStream [dash]> cannot be translated to a manifest URL"