tests: remove pyfakefs as unit test dependency

Signed-off-by: Jason C. Nucciarone <[email protected]>

tests/unit/test_slurm_ops.py

@@ -6,11 +6,11 @@
 
 import base64
 import subprocess
+from unittest import TestCase
 from unittest.mock import patch
 
 import charms.hpc_libs.v0.slurm_ops as slurm
 from charms.hpc_libs.v0.slurm_ops import ServiceType, SlurmManagerBase
-from pyfakefs.fake_filesystem_unittest import TestCase
 
 MUNGEKEY = b"1234567890"
 MUNGEKEY_BASE64 = base64.b64encode(MUNGEKEY)
@@ -41,9 +41,6 @@
 @patch("charms.hpc_libs.v0.slurm_ops.subprocess.check_output")
 class TestSlurmOps(TestCase):
 
-    def setUp(self) -> None:
-        self.setUpPyfakefs()
-
     def test_format_key(self, _) -> None:
         """Test that `kebabize` properly formats slurm keys."""
         self.assertEqual(slurm.format_key("CPUs"), "cpus")
@@ -75,9 +72,6 @@ def test_call_error(self, subcmd) -> None:
 class SlurmOpsBase:
     """Test the Slurm service operations managers."""
 
-    def setUp(self) -> None:
-        self.setUpPyfakefs()
-
     def test_config_name(self, *_) -> None:
         """Test that the config name is correctly set."""
         self.assertEqual(self.manager._service.config_name, self.config_name)

tox.ini

@@ -50,7 +50,6 @@ commands =
 description = Run unit tests
 deps =
     pytest
-    pyfakefs
     coverage[toml]
     -r {tox_root}/requirements.txt
 commands =