worktree: don't modify index entries in place (#10024)

tests/scripts.py

@@ -1,24 +1,6 @@
 import pytest
 
-COPY_SCRIPT = """
-import os
-import shutil
-import sys
-
-if os.path.isfile(sys.argv[1]):
-    shutil.copyfile(sys.argv[1], sys.argv[2])
-else:
-    shutil.copytree(sys.argv[1], sys.argv[2])
-""".replace(
-    "\r\n", "\n"
-)
-
-
-def _add_script(tmp_dir, path, contents=""):
-    script, *_ = tmp_dir.gen(path, contents.encode("utf-8"))
-    if hasattr(tmp_dir, "scm"):
-        tmp_dir.scm_add(path, commit=f"add {path}")
-    return script.fs_path
+from dvc.testing.scripts import _add_script
 
 
 @pytest.fixture
@@ -38,13 +20,6 @@ with Path(sys.argv[1]).open("a+", encoding="utf-8") as f:
     )
 
 
-@pytest.fixture
-def copy_script(
-    tmp_dir,
-):
-    return _add_script(tmp_dir, "copy.py", COPY_SCRIPT)
-
-
 @pytest.fixture
 def head_script(tmp_dir):
     """Output first line of each file to different file with '-1' appended.