def test_get_attachment_color():
    srv = Service({})
    assert type(srv.get_attachment_color({'type': 'story'})) == str
def test_get_attachment_color():
    srv = Service({})
    assert type(srv.get_attachment_color({'type': 'story'})) == str
def test_get_attachment_color_empty():
    srv = Service({})
    assert type(srv.get_attachment_color()) == str
def test_get_attachment_color_empty():
    srv = Service({})
    assert type(srv.get_attachment_color()) == str