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"""Module for testing topology behaviour."""
import pytest
from blc2.topology import Fixture
from blc2.workspace import Workspace
def test_fixture_create(ws):
"""Test basic fixture creation."""
f = Fixture(ws, id_=0, name="Test 1")
assert f.id in ws.fixtures
assert f.id == 0
assert f.name == "Test 1"
assert not f.channels
with pytest.raises(ValueError):
Fixture(ws, id_=0, name="Test 2")
assert ws.fixtures[0] == f
assert len(ws.fixtures) == 1
f2 = Fixture(ws, name="Test 3")
assert f2.id is not None
assert ws.fixtures[f2.id] == f2
assert len(ws.fixtures) == 2
f3 = Fixture(ws, channel_count = 3)
assert len(f3.channels) == 3
def test_fixture_channels(ws):
"""Test fixture channel manipulations."""
f = Fixture(ws, channel_count=3)
for i in range(3):
f.channels[i].address = (0, i)
channels = tuple(f.channels)
with pytest.raises(ValueError):
f.channel_count = -1
assert len(f.channels) == 3
## Verify that the channels haven't been changed
for a, b in zip(f.channels, channels):
assert id(a) == id(b)
f.channel_count = 2
assert len(f.channels) == 2
for a, b in zip(f.channels, channels[:2]):
assert id(a) == id(b)
f.channel_count = 3
assert len(f.channels) == 3
for a, b in zip(f.channels, channels[:2]):
assert id(a) == id(b)
assert id(f.channels[2]) != id(channels[2])
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