diff --git a/tests.py b/tests.py
index 982b97172fc4c9a9baebe58a9803e84bd212da74..868a65927511d8d0d9101b4cc14f82aa2cf6ac39 100644
--- a/tests.py
+++ b/tests.py
@@ -187,6 +187,7 @@ def test_record_script_execution_summary(tmp_path):
         last_line = f.readlines()[-1]
         assert "Spack environments branch: dev-23a " in last_line
 
+
 def test_install_environment_wrong_toolchain(tmp_path):
     """Test exception is raised for non-existing toolchain."""
     # Expect an Exception when wrong toolchains are provided
@@ -210,8 +211,7 @@ def test_install_environment_wrong_mpsd_release(tmp_path):
         )
 
 
-@pytest.mark.skipif(sys.platform == "darwin", 
-                    reason="install not working on OSX")
+@pytest.mark.skipif(sys.platform == "darwin", reason="install not working on OSX")
 def test_install_environment_zlib():
     """Test installation of toolchain."""
     # Prepare a test installation of global generic