Tests: modern PEP8-ify core test modules and methods (#2298)

* rename modules

* rename methods

* add docstrings to the general tests

* add base import stub

* test_base -> bases

* print deprecation warning

* redo 2346

test/general/test_host_yaml.py

@@ -0,0 +1,32 @@
+import os
+import unittest
+from tempfile import TemporaryFile
+
+from settings import Settings
+import Utils
+
+
+class TestIDs(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls) -> None:
+        with TemporaryFile("w+", encoding="utf-8") as f:
+            Settings(None).dump(f)
+            f.seek(0, os.SEEK_SET)
+            cls.yaml_options = Utils.parse_yaml(f.read())
+
+    def test_utils_in_yaml(self) -> None:
+        """Tests that the auto generated host.yaml has default settings in it"""
+        for option_key, option_set in Utils.get_default_options().items():
+            with self.subTest(option_key):
+                self.assertIn(option_key, self.yaml_options)
+                for sub_option_key in option_set:
+                    self.assertIn(sub_option_key, self.yaml_options[option_key])
+
+    def test_yaml_in_utils(self) -> None:
+        """Tests that the auto generated host.yaml shows up in reference calls"""
+        utils_options = Utils.get_default_options()
+        for option_key, option_set in self.yaml_options.items():
+            with self.subTest(option_key):
+                self.assertIn(option_key, utils_options)
+                for sub_option_key in option_set:
+                    self.assertIn(sub_option_key, utils_options[option_key])