1 files changed, 44 insertions, 0 deletions
diff --git a/scripts/testing/tests/test_backups.py b/scripts/testing/tests/test_backups.py
new file mode 100644
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--- /dev/null
+++ b/scripts/testing/tests/test_backups.py
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+# SPDX-License-Identifier: GPL-3.0-or-later
+"""Post-install checks: backup_system_file ran during a real install.
+
+Expansion coverage (P4). The unit suite (tests/backup-system-file/) covers the
+helper's logic; this confirms it actually fires end-to-end — archsetup leaves a
+<file>.archsetup.bak next to each pre-existing file it edits in place.
+
+These targets are edited unconditionally on every run (pacman.conf/makepkg.conf
+always sed'd, sudoers always appended), so their backups must exist.
+mkinitcpio.conf is edited only conditionally (the systemd-hook switch on
+non-ZFS, or the nvme module on NVMe systems), so it gets its own fixture-gated
+check below. Conditionally-edited files (locale.gen, geoclue, fstab) aren't
+asserted here since their edits depend on the base image.
+"""
+
+import pytest
+
+
+ALWAYS_BACKED_UP = [
+    "/etc/pacman.conf",
+    "/etc/makepkg.conf",
+    "/etc/sudoers",
+]
+
+
+@pytest.mark.attribution("archsetup")
+@pytest.mark.parametrize("path", ALWAYS_BACKED_UP)
+def test_backup_created_for_edited_file(host, path):
+    bak = host.file(path + ".archsetup.bak")
+    assert bak.exists, "%s.archsetup.bak missing — backup_system_file did not fire" % path
+    assert bak.is_file
+
+
+@pytest.mark.attribution("archsetup")
+def test_backup_created_for_mkinitcpio(host, zfs_root, has_nvme):
+    # archsetup edits /etc/mkinitcpio.conf only when it has something to change:
+    # the systemd-hook switch (non-ZFS only) or adding the nvme module (NVMe
+    # systems). A ZFS root with no NVMe touches neither, so there's no backup.
+    if zfs_root and not has_nvme:
+        pytest.skip("ZFS root + no NVMe: archsetup doesn't edit mkinitcpio.conf")
+    bak = host.file("/etc/mkinitcpio.conf.archsetup.bak")
+    assert bak.exists, \
+        "/etc/mkinitcpio.conf.archsetup.bak missing — backup_system_file did not fire"
+    assert bak.is_file