1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ini-merge.sh b/tests/ini-merge.sh
new file mode 100755
index 0000000..b495c9c
--- /dev/null
+++ b/tests/ini-merge.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+# Check install.sh's ini_merge: fresh file, partial file, idempotence.
+# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+# Licensed under the GNU General Public License v2 only.
+set -euo pipefail
+
+repo="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+eval "$(sed -n '/^ini_merge() {/,/^}/p' "$repo/install.sh")"
+tmp="$(mktemp -d)"
+trap 'rm -rf "$tmp"' EXIT
+
+printf '[A]\nx=1\ny=2\n[B]\nz=3\n' > "$tmp/tmpl"
+
+ini_merge "$tmp/tmpl" "$tmp/fresh"
+diff <(printf '[A]\nx=1\ny=2\n[B]\nz=3\n') "$tmp/fresh"
+
+# Existing key replaced, foreign key kept, missing key lands before the blank
+# line that separates sections, missing section appended.
+printf '[A]\nx=0\nkeep=me\n\n[C]\nw=4\n' > "$tmp/part"
+ini_merge "$tmp/tmpl" "$tmp/part"
+diff <(printf '[A]\nx=1\nkeep=me\ny=2\n\n[C]\nw=4\n[B]\nz=3\n') "$tmp/part"
+
+cp "$tmp/part" "$tmp/again"
+ini_merge "$tmp/tmpl" "$tmp/again"
+diff "$tmp/part" "$tmp/again"
+
+echo "ini-merge OK"