Adding a few additional test cases

tests/test_transpose.py

@@ -35,6 +35,21 @@ def test_apply():
         target_path=STORE_DIR,
         store_path=STORE_DIR,
     )
+
+    with open(t.cache_path, "r") as f:
+        cache = json.load(f)
+
+    # Test cache doesn't exist
+    t.cache_path.unlink()
+    with pytest.raises(TransposeError):
+        t.apply()
+
+    with open(t.cache_path, "w") as f:
+        json.dump(cache, f)
+
+    pathlib.Path(cache["original_path"]).symlink_to("bad/path")
+
+    # Success
     t.apply()
 
     assert store_path.is_dir() and not store_path.is_symlink()
@@ -47,11 +62,13 @@ def test_store_restore():
         target_path=TARGET_DIR,
         store_path=STORE_DIR,
     )
-    t.store("TestStore")
 
     target_path = pathlib.Path(TARGET_DIR)
     store_path = pathlib.Path(STORE_DIR).joinpath("TestStore")
+    t.store("TestStore")
 
+    # STORE
+    ## Successful Store
     assert store_path.is_dir() and not store_path.is_symlink()
     assert target_path.is_dir() and target_path.is_symlink()
     assert t.cache_path.is_file()
@@ -60,6 +77,23 @@ def test_store_restore():
         target_path=str(store_path),
         store_path=STORE_DIR,
     )
+
+    # RESTORE
+    ## Missing Cache File
+    cache = t.cache_path.read_text()
+    t.cache_path.unlink()
+    with pytest.raises(TransposeError):
+        t.restore()
+    t.cache_path.write_text(cache)
+    cache = json.loads(cache)
+
+    ## Missing Target Path
+    t.target_path.rename("newpath")
+    with pytest.raises(TransposeError):
+        t.restore()
+    pathlib.Path("newpath").rename(t.target_path)
+
+    ## Successful Restore
     t.restore()
 
     assert not store_path.exists()