check for Hat in all these tests

CHANGELOG.md

@@ -1,3 +1,8 @@
+### Upcoming
+ - When installing plugins, any leader-only commands would not be run. This is fixed.
+ - Base automations now subclass from `pioreactor.automations.BaseAutomationJob`. Nothing the user needs to worry about.
+ - Fixed bug that ignored `.yml` files in the UI.
+
 ### 23.8.29
  - Pioreactor's IPv4 and hostname is now displayed under System in the UI.
  - In configuration, renamed section `dosing_automation` to `dosing_automation.config` (only applies to new installs). It's recommended for existing users to make this change, too.

pioreactor/actions/self_test.py

@@ -63,6 +63,8 @@ def test_REF_is_in_correct_position(
     # The idea is to trigger stirring on and off and the REF should not see a change in signal / variance, but the other PD should.
     from statistics import variance
 
+    assert is_HAT_present()
+
     reference_channel = cast(PdChannel, config["od_config.photodiode_channel_reverse"][REF_keyword])
     signal_channel = "2" if reference_channel == "1" else "1"
 
@@ -120,6 +122,8 @@ def test_all_positive_correlations_between_pds_and_leds(
     from pprint import pformat
     from random import shuffle
 
+    assert is_HAT_present()
+
     # better to err on the side of MORE samples than less - it's only a few extra seconds...
     # we randomize to reduce effects of temperature
     INTENSITIES = list(range(20, 85, 5))
@@ -220,6 +224,8 @@ def test_ambient_light_interference(
 ) -> None:
     # test ambient light IR interference. With all LEDs off, and the Pioreactor not in a sunny room, we should see near 0 light.
 
+    assert is_HAT_present()
+
     adc_reader = ADCReader(
         channels=ALL_PD_CHANNELS,
         dynamic_gain=False,
@@ -275,6 +281,8 @@ def test_REF_is_lower_than_0_dot_256_volts(
 
 
 def test_PD_is_near_0_volts_for_blank(client, logger: Logger, unit: str, experiment: str) -> None:
+    assert is_HAT_present()
+
     reference_channel = cast(PdChannel, config["od_config.photodiode_channel_reverse"][REF_keyword])
     signal_channel = "2" if reference_channel == "1" else "1"
     assert config.get("od_config.photodiode_channel", signal_channel, fallback=None) in [
@@ -330,7 +338,10 @@ def test_positive_correlation_between_temperature_and_heating(
         assert measured_correlation > 0.9, (dcs, measured_pcb_temps)
 
 
-def test_aux_power_is_not_too_high(client: Client, logger: Logger, unit: str, experiment: str):
+def test_aux_power_is_not_too_high(
+    client: Client, logger: Logger, unit: str, experiment: str
+) -> None:
+    assert is_HAT_present()
     assert voltage_in_aux() <= 18.0