diff --git a/tests/unit/test_build/test_builder.py b/tests/unit/test_build/test_builder.py
index b486948..44e06ff 100644
--- a/tests/unit/test_build/test_builder.py
+++ b/tests/unit/test_build/test_builder.py
@@ -79,6 +79,7 @@ def test_verbosity(mock_build, pyproject, build_args):
 
     verbose = build_args.get("verbose", False)
     capture = not verbose
+
     # emulate build error to see captured out/err
     def _raise_process_error(*args, **kwargs):
         stdout, stderr = (b"stdout", b"stderr") if capture else (None, None)
@@ -290,6 +291,7 @@ def test_raisable_thread(mock_build, pyproject, mocker):
 
     # override mock_build's mock for os.read
     mock_os_read = mocker.patch("pyproject_installer.build_cmd._build.os.read")
+
     # emulate os.read error to raise thread
     def _raise_os_read(*args, **kwargs):
         raise OSError("oops")