def test_frames_to_csv(watson):
watson.start('foo', tags=['A', 'B'])
watson.stop()
result = frames_to_csv(watson.frames)
read_csv = list(csv.reader(StringIO(result)))
header = ['id', 'start', 'stop', 'project', 'tags']
assert len(read_csv) == 2
assert read_csv[0] == header
assert read_csv[1][3] == 'foo'
assert read_csv[1][4] == 'A, B'
def test_frames_to_csv_empty_data(watson):
assert frames_to_csv(watson.frames) == ''
