def test_error_on_invalid_channel_grouped2(chan):
"""Does channel access fail when outside the bounds?
This one does error out in _from_channel.
"""
pha = DataPHA('name', [1, 2, 3], [1, 1, 1], grouping=[1, -1, 1])
assert pha.grouped
with pytest.raises(DataErr) as exc:
pha._from_channel(chan)
# The error message is wrong
# assert str(exc.value) == 'invalid group number: {}'.format(chan)
assert str(exc.value) == 'invalid group number: {}'.format(chan - 1)
def test_error_on_invalid_channel_ungrouped(chan):
"""Does channel access fail when outside the bounds?
For ungrouped data it currently does not, but just
acts as an identity function.
"""
pha = DataPHA('name', [1, 2, 3], [1, 1, 1])
assert pha._from_channel(chan) == chan
def test_error_on_invalid_channel_grouped(chan, exp1, exp2):
"""Does channel access fail when outside the bounds?
It is not clear what _from_channel is doing here, so
just check the responses.
"""
pha = DataPHA('name', [1, 2, 3], [1, 1, 1],
grouping=[1, -1, 1])
assert pha.grouped
assert pha._from_channel(chan) == exp2
