1 files changed, 45 insertions, 0 deletions
diff --git a/tests/cp/reflink-auto.sh b/tests/cp/reflink-auto.sh
new file mode 100755
index 0000000..dcf6e23
--- /dev/null
+++ b/tests/cp/reflink-auto.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+# Test cp --reflink=auto
+
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ cp
+
+cleanup_() { rm -rf "$other_partition_tmpdir"; }
+. "$abs_srcdir/tests/other-fs-tmpdir"
+a_other="$other_partition_tmpdir/a"
+rm -f "$a_other" || framework_failure_
+
+echo non_zero_size > "$a_other" || framework_failure_
+
+# we shouldn't be able to reflink() files on separate partitions
+returns_ 1 cp --reflink "$a_other" b || fail=1
+
+# --reflink=auto should fall back to a normal copy
+cp --reflink=auto "$a_other" b || fail=1
+test -s b || fail=1
+
+# --reflink=auto should allow --sparse for fallback copies.
+# This command can be used to create minimal sized copies.
+cp --reflink=auto --sparse=always "$a_other" b || fail=1
+test -s b || fail=1
+
+# --reflink=auto should be overridden by --reflink=never
+cp --reflink=auto --reflink=never "$a_other" b || fail=1
+test -s b || fail=1
+
+Exit $fail