def test_status_legacy_finished_cb():
st = StatusBase()
state1, cb1 = _setup_state_and_cb()
state2, cb2 = _setup_state_and_cb()
# The old setter works for adding one callback.
with pytest.warns(UserWarning):
st.finished_cb = cb1
# The new getter works.
st.callbacks == set([cb1])
# And the old getter works so long as there is just one callback set.
with pytest.warns(UserWarning):
assert st.finished_cb is cb1
# As before, the old setter cannot be updated once set.
with pytest.raises(UseNewProperty):
st.finished_cb = cb2
# But, using the new method, we can add another callback.
st.add_callback(cb2)
# Once we have two callbacks, the getter does not work.
with pytest.raises(UseNewProperty):
st.finished_cb
# But the new getter does.
st.callbacks == set([cb1, cb2])
assert 'done' not in state1
assert 'done' not in state2
st.set_finished()
st.wait(1)
time.sleep(0.1) # Wait for callbacks to run.
assert 'done' in state1
assert 'done' in state2
def test_old_signature_on_finished_status():
st = StatusBase()
state, cb = _setup_state_and_cb(new_signature=False)
st.set_finished()
st.wait(1)
with pytest.warns(DeprecationWarning, match="signature"):
st.add_callback(cb)
assert state
def test_old_signature():
st = StatusBase()
state, cb = _setup_state_and_cb(new_signature=False)
with pytest.warns(DeprecationWarning, match="signature"):
st.add_callback(cb)
assert not state
st.set_finished()
st.wait(1)
time.sleep(0.1) # Wait for callbacks to run.
assert state
def test_set_finished_after_timeout():
"""
If an external callback (e.g. pyepics) calls set_finished after the status
has timed out, ignore it.
"""
st = StatusBase(timeout=0)
time.sleep(0.1)
assert isinstance(st.exception(), StatusTimeoutError)
# External callback fires, too late.
st.set_finished()
assert isinstance(st.exception(), StatusTimeoutError)
def test_status_callback():
"The new way, with add_callback and the callbacks property"
st = StatusBase()
cb = Mock()
st.add_callback(cb)
assert st.callbacks[0] is cb
st.set_finished()
st.wait(1)
time.sleep(0.1) # Wait for callbacks to run.
cb.assert_called_once_with(st)
def test_status_pre():
st = StatusBase()
state, cb = _setup_state_and_cb()
st.set_finished()
st.wait(1)
time.sleep(0.1) # Wait for callbacks to run.
assert 'done' not in state
st.add_callback(cb)
assert 'done' in state
assert state['done']
def test_race_settle_time_and_timeout():
"""
A StatusTimeoutError should NOT occur here because that is only invoked
after (timeout + settle_time) has elapsed.
"""
st = StatusBase(timeout=1, settle_time=3)
st.set_finished() # starts a threading.Timer with the settle_time
time.sleep(1.5)
# We should still be settling....
with pytest.raises(WaitTimeoutError):
st.wait(1)
# Now we should be done successfully.
st.wait(3)
def test_status_callback_deprecated():
"The old way, with finished_cb"
st = StatusBase()
cb = Mock()
with pytest.warns(UserWarning):
st.finished_cb = cb
with pytest.warns(UserWarning):
assert st.finished_cb is cb
with pytest.raises(RuntimeError):
st.finished_cb = None
st.set_finished()
st.wait(1)
time.sleep(0.1) # Wait for callbacks to run.
cb.assert_called_once_with(st)
def test_direct_done_setting():
st = StatusBase()
state, cb = _setup_state_and_cb()
with pytest.raises(RuntimeError):
st.done = True # changing isn't allowed
with pytest.warns(UserWarning):
st.done = False # but for now no-ops warn
st.set_finished()
st.wait(1)
time.sleep(0.1) # Wait for callbacks to run.
with pytest.raises(RuntimeError):
st.done = False # changing isn't allowed
with pytest.warns(UserWarning):
st.done = True # but for now no-ops warn
def test_and():
st1 = StatusBase()
st2 = StatusBase()
st3 = st1 & st2
# make sure deep recursion works
st4 = st1 & st3
st5 = st3 & st4
state1, cb1 = _setup_state_and_cb()
state2, cb2 = _setup_state_and_cb()
state3, cb3 = _setup_state_and_cb()
state4, cb4 = _setup_state_and_cb()
state5, cb5 = _setup_state_and_cb()
st1.add_callback(cb1)
st2.add_callback(cb2)
st3.add_callback(cb3)
st4.add_callback(cb4)
st5.add_callback(cb5)
st1.set_finished()
st1.wait(1)
time.sleep(0.1) # Wait for callbacks to run.
assert 'done' in state1
assert 'done' not in state2
assert 'done' not in state3
assert 'done' not in state4
assert 'done' not in state5
st2.set_finished()
st3.wait(1)
st4.wait(1)
st5.wait(1)
time.sleep(0.1) # Wait for callbacks to run.
assert 'done' in state3
assert 'done' in state4
assert 'done' in state5
assert st3.left is st1
assert st3.right is st2
assert st4.left is st1
assert st4.right is st3
assert st5.left is st3
assert st5.right is st4
def test_status_wait():
st = StatusBase()
st.set_finished()
wait(st)
def test_status_basic():
st = StatusBase()
st.set_finished()
def trigger(self):
print('Triggered the sequencer!')
status = StatusBase()
status.set_finished()
return status
def test_exception_success_path():
st = StatusBase()
st.set_finished()
assert st.wait(1) is None
assert st.exception() is None
def test_set_finished_twice():
st = StatusBase()
st.set_finished()
with pytest.raises(InvalidState):
st.set_finished()
