[EDIT] FILE: test_fs_with_monkeypatch.py

from pyfakefs.fake_filesystem import FakeFileOpen def test_monkeypatch_with_fs(fs, monkeypatch): """Regression test for issue 1200""" fake_open = FakeFileOpen(fs) monkeypatch.setattr("builtins.open", fake_open, raising=False) def test_open(): """Tests if open is poisoned by the above test""" assert "built-in" in str(open)
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