Bugfixes in the glossary protection guard: allow changes toward protected glossary terms, but deny changes away from protected terms

tests/test_protection.py

@@ -11,6 +11,9 @@ def _vocabulary():
               - "Greenfield"
             category: pc
             summary: "Hrank Greenfield is a player character."
+          - name: "Popov"
+            category: npc
+            summary: "Popov is an allied NPC."
         """
     )
     return ProtectedVocabulary.from_glossary(glossary)
@@ -22,22 +25,46 @@ def test_protection_blocks_replacing_protected_term():
     assert vocabulary.violation_reason("Hrank moves.", "Frank moves.") is not None
 
 
+def test_protection_blocks_replacing_possessive_protected_term():
+    vocabulary = _vocabulary()
+
+    assert vocabulary.violation_reason("Popov's exhausted.", "Pawpaw's exhausted.") is not None
+
+
 def test_protection_blocks_lowercasing_protected_term():
     vocabulary = _vocabulary()
 
     assert vocabulary.violation_reason("Hrank moves.", "hrank moves.") is not None
 
 
+def test_protection_blocks_noncanonical_uppercase_protected_term():
+    vocabulary = _vocabulary()
+
+    assert vocabulary.violation_reason("Popov moves.", "POPOV moves.") is not None
+
+
 def test_protection_allows_canonical_capitalization():
     vocabulary = _vocabulary()
 
     assert vocabulary.violation_reason("hrank moves.", "Hrank moves.") is None
 
 
+def test_protection_allows_correction_toward_protected_term():
+    vocabulary = _vocabulary()
+
+    assert vocabulary.violation_reason("Pawpaw moves.", "Popov moves.") is None
+
+
+def test_protection_allows_possessive_correction_toward_protected_term():
+    vocabulary = _vocabulary()
+
+    assert vocabulary.violation_reason("Pawpaw's exhausted.", "Popov's exhausted.") is None
+
+
 def test_protection_allows_punctuation_around_protected_term():
     vocabulary = _vocabulary()
 
-    assert vocabulary.violation_reason("Hrank, moves.", "Hrank. Moves.") is None
+    assert vocabulary.violation_reason("Popov, moves.", "Popov. Moves.") is None
 
 
 def test_protection_does_not_match_terms_inside_larger_words():