Split tests into specifically named test cases

tests/test_hierarchy.py

@@ -8,9 +8,6 @@ import unittest
 from pathlib import Path
 from unittest.mock import DEFAULT, patch
 
-from hypothesis import given
-from hypothesis.strategies import from_regex
-
 from rbackup.struct.hierarchy import Hierarchy
 
 # ========== Constants ==========
@@ -20,6 +17,8 @@ TESTING_MODULE = f"{TESTING_PACKAGE}.hierarchy"
 
 # ========== Tests ==========
 class TestHierarchyPaths(unittest.TestCase):
+    """Check given path properties of a Hierarchy object."""
+
     def setUp(self):
         self.patched_path = patch.multiple(
             Path, exists=DEFAULT, mkdir=DEFAULT, symlink_to=DEFAULT, touch=DEFAULT
@@ -30,16 +29,29 @@ class TestHierarchyPaths(unittest.TestCase):
     def test_retrieves_correct_metadata_filename(self):
         self.assertEqual(Hierarchy("/tmp/backup").metadata_path.name, ".metadata")
 
-    def test_raises_notimplemented_error(self):
-        h = Hierarchy("/tmp/backup")
-        with self.assertRaises(NotImplementedError):
-            h._gen_metadata()
-
     def tearDown(self):
         patch.stopall()
 
 
 class TestHierarchyMetadata(unittest.TestCase):
+    """Test intrusive metadata methods of a Hierarchy object."""
+
+    def setUp(self):
+        self.patched_path = patch.multiple(
+            Path, exists=DEFAULT, mkdir=DEFAULT, symlink_to=DEFAULT, touch=DEFAULT
+        )
+
+        self.mocked_path = self.patched_path.start()
+
+    def test_gen_metadata_raises_notimplemented_error(self):
+        with self.assertRaises(NotImplementedError):
+            Hierarchy("/tmp/backup")._gen_metadata()
+
+    def tearDown(self):
+        patch.stopall()
+
+
+class TestHierarchyMetadataIO(unittest.TestCase):
     """Only meant to check that data written is the same data that is read."""
 
     def test_write_metadata(self):