hitl_tester.test_cases.bms.test_thermal_chamber

 1"""
 2This test case runs through all the thermal chamber functions available to the HITL, and functioning correctly.
 3"""
 4
 5import datetime
 6
 7import pytest
 8
 9from hitl_tester.modules.bms.bms_hw import BMSHardware
10
11bms_hardware = BMSHardware(pytest.flags)  # type: ignore[arg-type]
12bms_hardware.init()
13
14
15def raise_thermal_chamber_temperature(higher_temperature):
16    """Set and wait for a higher temperature to be reached."""
17    bms_hardware.thermal_chamber.set_point_temperature = higher_temperature  # Test writing the set point temperature
18    assert (
19        bms_hardware.thermal_chamber.set_point_temperature == higher_temperature
20    )  # Test reading the set point temperature
21    bms_hardware.thermal_chamber.block_until_set_point_reached()  # Wait until the set temperature has been reached
22    assert (
23        higher_temperature - 2 <= bms_hardware.thermal_chamber.air_temperature <= higher_temperature + 2
24    )  # Test reading the air temperature (chamber rated for -68C to 180C), and that it's within 2 Celsius
25
26
27def lower_thermal_chamber_temperature(lower_temperature):
28    """Set and wait for a lower temperature to be reached."""
29    bms_hardware.thermal_chamber.set_point_temperature = lower_temperature  # Test writing the set point temperature
30    assert (
31        bms_hardware.thermal_chamber.set_point_temperature == lower_temperature
32    )  # Test reading the set point temperature
33    bms_hardware.thermal_chamber.block_until_set_point_reached()  # Wait until the set temperature has been reached
34    assert (
35        lower_temperature - 2 <= bms_hardware.thermal_chamber.air_temperature <= lower_temperature + 2
36    )  # Test reading the air temperature (chamber rated for -68C to 180C), and that it's within 2 Celsius
37
38
39def test_thermal_chamber(capsys):
40    """Run all the thermal chamber functions and confirm they're responding appropriately."""
41    with capsys.disabled():  # Enable I/O
42        # Test writing/reading temperature units
43        print(f"Current status 1: {bms_hardware.thermal_chamber.status}")
44
45        print(f"Current units 1: {bms_hardware.thermal_chamber.internal_units}", end="")
46        print(f" {bms_hardware.thermal_chamber.display_units}")
47        bms_hardware.thermal_chamber.internal_units = "F"
48        bms_hardware.thermal_chamber.display_units = "F"
49        bms_hardware.delay(5)
50        assert bms_hardware.thermal_chamber.internal_units == "F"
51        assert bms_hardware.thermal_chamber.display_units == "F"
52        print(f"Current units 2: {bms_hardware.thermal_chamber.internal_units}", end="")
53        print(f" {bms_hardware.thermal_chamber.display_units}")
54        bms_hardware.thermal_chamber.internal_units = "C"
55        bms_hardware.thermal_chamber.display_units = "C"
56        bms_hardware.delay(5)
57        assert bms_hardware.thermal_chamber.internal_units == "C"
58        assert bms_hardware.thermal_chamber.display_units == "C"
59        print(f"Current units 3: {bms_hardware.thermal_chamber.internal_units}", end="")
60        print(f" {bms_hardware.thermal_chamber.display_units}")
61
62        # Test writing/reading controller date
63        print(f"Current date {bms_hardware.thermal_chamber.date_and_time}", end="")
64        print(f" - {bms_hardware.thermal_chamber.date_and_time.date()}")
65        # bms_hardware.thermal_chamber.date_and_time = datetime.datetime.now()
66        assert bms_hardware.thermal_chamber.date_and_time.date() == datetime.date.today()
67
68        # Test raising and lowering the thermal chamber temperature
69        temperature_delta = 10
70        current_temperature = bms_hardware.thermal_chamber.air_temperature
71        print(f"Current temp 1: {current_temperature}")
72        if current_temperature + temperature_delta <= 180:  # Stay within the rated limits of the chamber
73            with pytest.raises(TimeoutError):
74                bms_hardware.thermal_chamber.set_point_temperature = current_temperature + temperature_delta
75                bms_hardware.thermal_chamber.block_until_set_point_reached(timeout=1)
76            print("Caught timeout!")
77            raise_thermal_chamber_temperature(current_temperature + temperature_delta)
78            print(f"Current temp 2: {bms_hardware.thermal_chamber.air_temperature}")
79            lower_thermal_chamber_temperature(current_temperature)
80            print(f"Current temp 3: {bms_hardware.thermal_chamber.air_temperature}")
81        else:
82            with pytest.raises(TimeoutError):
83                bms_hardware.thermal_chamber.set_point_temperature = current_temperature - temperature_delta
84                bms_hardware.thermal_chamber.block_until_set_point_reached(timeout=1)
85            print("Caught timeout!")
86            lower_thermal_chamber_temperature(current_temperature - temperature_delta)
87            print(f"Current temp 2: {bms_hardware.thermal_chamber.air_temperature}")
88            raise_thermal_chamber_temperature(current_temperature)
89            print(f"Current temp 3: {bms_hardware.thermal_chamber.air_temperature}")
90
91        # Check controller status can be read correctly
92        print(f"Current status 2: {bms_hardware.thermal_chamber.status}")
93        assert bms_hardware.thermal_chamber.status in (
94            "Program Running",
95            "Program Paused",
96            "Constant",
97            "Standby",
98            "Alarm",
99        )