outlined the tests to fix

tests/beamlines/unit_tests/test_p38.py

@@ -1,5 +1,7 @@
 import os
 
+import pytest
+
 from dodal.common.beamlines import beamline_utils
 from dodal.devices.i22.nxsas import NXSasOAV
 
@@ -11,3 +13,20 @@ def test_devices_diff_when_in_lab():
     beamline_utils.clear_devices()
     saxs = i22.saxs(wait_for_connection=False, fake_with_ophyd_sim=True)
     assert saxs.__class__ == NXSasOAV, f"Expected NXSasOav, got {saxs.__class__}"
+
+
+# todo fix the following tests
+# FAILED tests/beamlines/unit_tests/test_i03.py::test_list - KeyError: "No beamline parameter path found, maybe 'BEAMLINE' environment variable is not set!"
+# FAILED tests/beamlines/unit_tests/test_p38.py::test_devices_diff_when_in_lab - AssertionError: Expected NXSasOav, got <class 'dodal.devices.i22.nxsas.NXSasPilatus'>
+# assert <class 'dodal.devices.i22.nxsas.NXSasPilatus'> == NXSasOAV
+#  +  where <class 'dodal.devices.i22.nxsas.NXSasPilatus'> = <dodal.devices.i22.nxsas.NXSasPilatus object at 0x7f016ca5b340>.__class__
+
+
+@pytest.mark.parametrize("module_and_devices_for_beamline", ["p38"], indirect=True)
+def test_device_creation(RE, module_and_devices_for_beamline):
+    _, devices = module_and_devices_for_beamline
+    saxs: NXSasOAV = devices["saxs"]  # type: ignore
+
+    print(saxs)
+    assert saxs.prefix == "BL24I-MO-VGON-01:"
+    assert saxs.kappa.prefix == "BL24I-MO-VGON-01:KAPPA"