cross the filesystem mount

Author: praiskup

tests/test_patch_git_preparation.py

@@ -1,6 +1,8 @@
 """
 Test patch-git-prepare.sh script
 """
+
+import os
 import subprocess
 import tempfile
 from pathlib import Path
@@ -16,12 +18,13 @@ def test_patch_git_prep():
     # any directory is OK for our testing
     subprocess.run(["git", "config", "--global", "add.safe.directory", "*"],
                    check=True)
+    env = {**os.environ, "GIT_DISCOVERY_ACROSS_FILESYSTEM": "1"}
     with tempfile.TemporaryDirectory(dir=base_dir) as tmp_dir:
         tmp_path = Path(tmp_dir)
         commit = "c8d343a3ff7f6be17ff1d0dd7f89d06845c0a18b"
-        subprocess.run([str(script_path), commit], cwd=tmp_path, check=True)
         r = subprocess.run([str(script_path), commit], cwd=tmp_path,
-                           capture_output=True, text=True, check=False)
+                           capture_output=True, text=True, check=False,
+                           env=env)
         if r.returncode:
             raise RuntimeError(f"Command errored: {r.stderr}")
         generated_file = tmp_path / "patch-git-generated-log.txt"