def test_append_bulk_calls_append(self):
# given
ts = TimeSeries()
ts.append = Mock() # override append method, which would throw NotImplementedError
#when
ts.append_bulk([[x] for x in range(0,3)])
#then
expected_calls = [ call([x]) for x in range(0,3)]
assert_that(ts.append.mock_calls, is_(equal_to(expected_calls)))
def test_append_raises_NotImplementedError(self):
ts = TimeSeries()
assert_that(calling(lambda: ts.append([1])), raises(NotImplementedError))
def test_empty_range_returns_none(self):
ts = TimeSeries()
ts.rows = Mock(return_value=[])
assert_that(ts.range(), is_(none()))
