test(fix): isolate excepthook tests from each other

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/test_execfile.py b/tests/test_execfile.py
index 21cbb727..b7a09902 100644
--- a/tests/test_execfile.py
+++ b/tests/test_execfile.py
@@ -10,6 +10,7 @@ import os.path
 import pathlib
 import py_compile
 import re
+import sys
 
 import pytest
 
@@ -26,6 +27,12 @@ TRY_EXECFILE = os.path.join(TESTS_DIR, "modules/process_test/try_execfile.py")
 class RunFileTest(CoverageTest):
     """Test cases for `run_python_file`."""
 
+    @pytest.fixture(autouse=True)
+    def clean_up(self):
+        """These tests all run in-process. Clean up global changes."""
+        yield
+        sys.excepthook = sys.__excepthook__
+
     def test_run_python_file(self):
         run_python_file([TRY_EXECFILE, "arg1", "arg2"])
         mod_globs = json.loads(self.stdout())