fix: find_writable_pth_directory must expect failure from open()

Fix find_writable_pth_directory() to expect the OSError from the open()
call.  In general, this is what's going to happen if the file is not
writable.  The current logic could only be triggered e.g. if the file
was writable but the underlying filesystem run out of space.

1 files changed, 4 insertions, 4 deletions

diff --git a/tests/test_process.py b/tests/test_process.py
index 63dd1d5b..a3135049 100644
--- a/tests/test_process.py
+++ b/tests/test_process.py
@@ -1419,11 +1419,11 @@ def find_writable_pth_directory():
     """Find a place to write a .pth file."""
     for pth_dir in possible_pth_dirs():             # pragma: part covered
         try_it = os.path.join(pth_dir, f"touch_{WORKER}.it")
-        with open(try_it, "w") as f:
-            try:
+        try:
+            with open(try_it, "w") as f:
                 f.write("foo")
-            except OSError:                         # pragma: cant happen
-                continue
+        except OSError:                             # pragma: cant happen
+            continue
 
         os.remove(try_it)
         return pth_dir