async def test_available_port_ref(num_mock_port1):
port_expr = MockPortRef(num_mock_port1)
expr = various.AvailableFunction([port_expr])
assert await expr.eval() == 1
num_mock_port1.set_last_read_value(16)
assert await expr.eval() == 1
port_expr = MockPortRef(None, port_id='some-id')
expr = various.AvailableFunction([port_expr])
assert await expr.eval() == 0
async def test_history_newer_unlimited_past(freezer, mock_persist_driver,
dummy_utc_datetime,
dummy_timestamp, num_mock_port1):
freezer.move_to(dummy_utc_datetime)
mock_persist_driver.enable_history_support()
port_expr = MockPortRef(num_mock_port1)
ts_expr = MockExpression(dummy_timestamp - 7200)
diff_expr = MockExpression(0)
expr = various.HistoryFunction([port_expr, ts_expr, diff_expr])
num_mock_port1.set_last_read_value(-8)
await history.save_sample(num_mock_port1, (dummy_timestamp - 8000) * 1000)
num_mock_port1.set_last_read_value(0.01)
assert await expr.eval() == 0.01
num_mock_port1.set_last_read_value(-4)
await history.save_sample(num_mock_port1, (dummy_timestamp - 4000) * 1000)
assert await expr.eval() == -4
num_mock_port1.set_last_read_value(-6)
await history.save_sample(num_mock_port1, (dummy_timestamp - 6000) * 1000)
diff_expr.set_value(3601) # Invalidates history expression internal cache
assert await expr.eval() == -6
async def test_history_older_past(freezer, mock_persist_driver,
dummy_utc_datetime, dummy_timestamp,
num_mock_port1):
freezer.move_to(dummy_utc_datetime)
mock_persist_driver.enable_history_support()
port_expr = MockPortRef(num_mock_port1)
ts_expr = MockExpression(dummy_timestamp - 3600)
diff_expr = MockExpression(-3600)
expr = various.HistoryFunction([port_expr, ts_expr, diff_expr])
num_mock_port1.set_last_read_value(-8)
await history.save_sample(num_mock_port1, (dummy_timestamp - 8000) * 1000)
num_mock_port1.set_last_read_value(-2)
await history.save_sample(num_mock_port1, (dummy_timestamp - 2000) * 1000)
num_mock_port1.set_last_read_value(0.01)
with pytest.raises(PortValueUnavailable):
await expr.eval()
num_mock_port1.set_last_read_value(-6)
await history.save_sample(num_mock_port1, (dummy_timestamp - 6000) * 1000)
assert await expr.eval() == -6
num_mock_port1.set_last_read_value(-4)
await history.save_sample(num_mock_port1, (dummy_timestamp - 4000) * 1000)
diff_expr.set_value(-3601) # Invalidates history expression internal cache
assert await expr.eval() == -4
async def test_history_older_future(freezer, mock_persist_driver,
dummy_utc_datetime, dummy_timestamp,
num_mock_port1):
freezer.move_to(dummy_utc_datetime)
mock_persist_driver.enable_history_support()
port_expr = MockPortRef(num_mock_port1)
ts_expr = MockExpression(dummy_timestamp + 7200)
diff_expr = MockExpression(-3600)
expr = various.HistoryFunction([port_expr, ts_expr, diff_expr])
num_mock_port1.set_last_read_value(-8)
await history.save_sample(num_mock_port1, (dummy_timestamp - 8000) * 1000)
num_mock_port1.set_last_read_value(0.01)
assert await expr.eval() == 0.01
async def test_history_newer_unlimited_future(freezer, mock_persist_driver,
dummy_utc_datetime,
dummy_timestamp, num_mock_port1):
freezer.move_to(dummy_utc_datetime)
mock_persist_driver.enable_history_support()
port_expr = MockPortRef(num_mock_port1)
ts_expr = MockExpression(dummy_timestamp + 7200)
diff_expr = MockExpression(0)
expr = various.HistoryFunction([port_expr, ts_expr, diff_expr])
num_mock_port1.set_last_read_value(-8)
await history.save_sample(num_mock_port1, (dummy_timestamp - 8000) * 1000)
num_mock_port1.set_last_read_value(0.01)
with pytest.raises(PortValueUnavailable):
await expr.eval()
async def test_history_newer_current(freezer, mock_persist_driver,
dummy_utc_datetime, dummy_timestamp,
num_mock_port1):
freezer.move_to(dummy_utc_datetime)
mock_persist_driver.enable_history_support()
port_expr = MockPortRef(num_mock_port1)
ts_expr = MockExpression(dummy_timestamp - 1800)
diff_expr = MockExpression(3600)
expr = various.HistoryFunction([port_expr, ts_expr, diff_expr])
num_mock_port1.set_last_read_value(-2)
await history.save_sample(num_mock_port1, (dummy_timestamp - 2000) * 1000)
num_mock_port1.set_last_read_value(-1)
await history.save_sample(num_mock_port1, (dummy_timestamp - 1000) * 1000)
num_mock_port1.set_last_read_value(0.01)
assert await expr.eval(context={}) == -1