1 files changed, 81 insertions, 0 deletions
diff --git a/corebinutils/chmod/tests/test.sh b/corebinutils/chmod/tests/test.sh
new file mode 100644
index 0000000000..87d984d1d3
--- /dev/null
+++ b/corebinutils/chmod/tests/test.sh
@@ -0,0 +1,81 @@
+#!/bin/sh
+#
+# Copyright (c) 2026
+#  Project Tick. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+set -eu
+
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
+CHMOD_BIN=${CHMOD_BIN:-"$ROOT/out/chmod"}
+TMPDIR=${TMPDIR:-/tmp}
+WORKDIR=$(mktemp -d "$TMPDIR/chmod-test.XXXXXX")
+trap 'rm -rf "$WORKDIR"' EXIT INT TERM
+
+fail() {
+	printf '%s\n' "FAIL: $1" >&2
+	exit 1
+}
+
+assert_mode() {
+	expected=$1
+	path=$2
+	actual=$(stat -c '%a' "$path")
+	[ "$actual" = "$expected" ] || fail "$path mode expected $expected got $actual"
+}
+
+[ -x "$CHMOD_BIN" ] || fail "missing binary: $CHMOD_BIN"
+
+touch "$WORKDIR/file"
+"$CHMOD_BIN" 600 "$WORKDIR/file"
+assert_mode 600 "$WORKDIR/file"
+
+"$CHMOD_BIN" u+x "$WORKDIR/file"
+assert_mode 700 "$WORKDIR/file"
+
+"$CHMOD_BIN" go-rwx "$WORKDIR/file"
+assert_mode 700 "$WORKDIR/file"
+
+"$CHMOD_BIN" a+r "$WORKDIR/file"
+assert_mode 744 "$WORKDIR/file"
+
+mkdir -p "$WORKDIR/tree/sub"
+touch "$WORKDIR/tree/sub/file"
+"$CHMOD_BIN" -R 755 "$WORKDIR/tree"
+assert_mode 755 "$WORKDIR/tree"
+assert_mode 755 "$WORKDIR/tree/sub"
+assert_mode 755 "$WORKDIR/tree/sub/file"
+
+verbose_output=$("$CHMOD_BIN" -vv 700 "$WORKDIR/file")
+case $verbose_output in
+	*"$WORKDIR/file: "*) ;;
+	*) fail "verbose output missing file path" ;;
+esac
+
+usage_output=$("$CHMOD_BIN" 2>&1 || true)
+case $usage_output in
+	*"usage: chmod "* ) ;;
+	*) fail "usage output missing" ;;
+esac
+
+printf '%s\n' "PASS"