type annotate tests, swap older pytest tmpdir fixture for tmp_path

setup.cfg

@@ -50,6 +50,3 @@ disallow_any_generics = true
 disallow_incomplete_defs = true
 warn_redundant_casts = true
 warn_unused_ignores = true
-
-[mypy-tests.*]
-disallow_untyped_defs = false

tests/test_helpers.py

@@ -11,18 +11,18 @@
 
 
 @pytest.mark.parametrize("raw_delim", ["#    %%", "#%%"])
-def test_format_cell_delimiters(raw_delim):
+def test_format_cell_delimiters(raw_delim: str) -> None:
 
     assert format_cell_delimiters(raw_delim) == "# %%"
 
 
 @pytest.mark.parametrize("input", ["# %%some comment", "# %%     some comment"])
-def test_format_comments_after_cell_delimiters(input):
+def test_format_comments_after_cell_delimiters(input: str) -> None:
 
     assert format_comments_after_cell_delimiters(input) == "# %% some comment"
 
 
-def test_remove_empty_cells():
+def test_remove_empty_cells() -> None:
     # single empty cell
     out = remove_empty_cells("# %%\n\n# %%")
     assert out == "# %%"
@@ -51,12 +51,12 @@ def test_remove_empty_cells():
         "# %%\n\t\t\n  \n    \nfoo = 'bar'",
     ],
 )
-def test_remove_empty_lines_starting_cell(input):
+def test_remove_empty_lines_starting_cell(input: str) -> None:
 
     assert remove_empty_lines_starting_cell(input) == "# %%\nfoo = 'bar'"
 
 
-def test_ensure_two_blank_lines_preceding_cell():
+def test_ensure_two_blank_lines_preceding_cell() -> None:
     # single preceding blank line
     out = ensure_two_blank_lines_preceding_cell("\n# %%\n")
     assert out == "\n\n\n# %%\n"
@@ -81,6 +81,6 @@ def test_ensure_two_blank_lines_preceding_cell():
         "\n# %%\na = 5\n\n\n# %%\n\t  \n\n   \n",
     ],
 )
-def test_delete_last_cell_if_empty(input):
+def test_delete_last_cell_if_empty(input: str) -> None:
 
     assert delete_last_cell_if_empty(input) == "\n# %%\na = 5\n"

tests/test_main.py

@@ -1,36 +1,39 @@
 import filecmp
+import shutil
 from importlib.metadata import version
-from shutil import copy2
+from pathlib import Path
 
 import pytest
+from pytest import CaptureFixture, MonkeyPatch
 
 from format_ipy_cells.main import main
 
 
-def test_main_format_cells(capsys, tmpdir):
+def test_main_format_cells(
+    tmp_path: Path, capsys: CaptureFixture[str], monkeypatch: MonkeyPatch
+) -> None:
+    shutil.copy2("tests/fixtures/raw_nb.py", raw_tmp := str(tmp_path / "raw_nb.py"))
+    # test we leave clean file as is and don't print logs about it
     clean_nb = "tests/fixtures/clean_nb.py"
+    shutil.copy2(clean_nb, clean_tmp := str(tmp_path / "clean_nb.py"))
 
-    raw_file = copy2("tests/fixtures/raw_nb.py", tmpdir)
-    # test we leave clean file as is and don't write logs about it
-    clean_file = copy2(clean_nb, tmpdir)
-
-    ret = main((raw_file, clean_file))
+    ret = main((raw_tmp, clean_tmp))
 
     assert ret == 1
-    assert filecmp.cmp(raw_file, clean_nb), "Formatted file has unexpected content"
-    assert filecmp.cmp(clean_file, clean_nb), "clean file should not have changed"
+    assert filecmp.cmp(raw_tmp, clean_nb), "Formatted file has unexpected content"
+    assert filecmp.cmp(clean_tmp, clean_nb), "clean file should not have changed"
 
     out, err = capsys.readouterr()
-    assert out == f"Rewriting {raw_file}\n"
+    assert out == f"Rewriting {raw_tmp}\n"
     assert err == ""
 
-    ret = main([clean_file])
+    ret = main([clean_tmp])
     assert ret == 0, "expected exit code 0 when no files were changed"
     out, err = capsys.readouterr()
     assert out == err == ""
 
 
-def test_main_print_version(capsys):
+def test_main_print_version(capsys: CaptureFixture[str]) -> None:
 
     with pytest.raises(SystemExit):
         ret_val = main(["-v"])