headless-safe filedialog tests with optional live dialog tests and ruff fixes

test/test_misc.py

@@ -1,4 +1,3 @@
-
 from pathlib import Path
 
 from utils.misc import read, readlines
@@ -12,6 +11,7 @@ with a second line
 and a third line
 """
 
+
 def test_readlines_str():
     result = readlines(TEST_FILE_PATH)
     assert result
@@ -19,6 +19,7 @@ def test_readlines_str():
     assert all(isinstance(element, str) for element in result)
     assert result[1].strip() == "with a second line"
 
+
 def test_path_str():
     result = read(TEST_FILE_PATH)
     assert result