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0001 """Exercise reference matching and search failures with real grep calls."""
0002
0003 import subprocess
0004
0005 import pytest
0006
0007 from check_unused_files import file_can_be_removed
0008
0009
0010 def test_reference_matching(tmp_path):
0011 (tmp_path / "references.txt").write_text(
0012 "#include <used.hpp>\nimport package.module\n"
0013 )
0014 scope = [str(tmp_path)]
0015 assert not file_can_be_removed("used.hpp", scope)
0016 assert not file_can_be_removed(r"import .*module", scope)
0017 assert file_can_be_removed("unused.hpp", scope)
0018
0019
0020 def test_search_failure(tmp_path):
0021 with pytest.raises(subprocess.CalledProcessError):
0022 file_can_be_removed("unused.hpp", [str(tmp_path / "missing")])
