tests: move tests to a directory per utility

* cfg.mk: Adjust syntax check exclusion paths.
* tests/local.mk: Adjust for renamed tests.

tests/readlink/readlink-root.sh

@@ -0,0 +1,92 @@
+#!/bin/sh
+# tests for canonicalize-existing mode (readlink -e) on /.
+
+# Copyright (C) 2012-2023 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ readlink
+
+stat_single=$(stat -c %d:%i /) || framework_failure_
+stat_double=$(stat -c %d:%i //) || framework_failure_
+double_slash=//
+if test x"$stat_single" = x"$stat_double"; then
+  double_slash=/
+fi
+
+test -d /dev || framework_failure_
+
+ln -s / one || framework_failure_
+ln -s // two || framework_failure_
+ln -s /// three || framework_failure_
+ln -s /./..// one-dots || framework_failure_
+ln -s //./..// two-dots || framework_failure_
+ln -s ///./..// three-dots || framework_failure_
+ln -s /dev one-dev || framework_failure_
+ln -s //dev two-dev || framework_failure_
+ln -s ///dev three-dev || framework_failure_
+
+cat >exp <<EOF || framework_failure_
+/
+$double_slash
+/
+/
+$double_slash
+/
+/
+$double_slash
+/
+/
+$double_slash
+/
+/dev
+${double_slash}dev
+/dev
+/dev
+${double_slash}dev
+/dev
+/dev
+${double_slash}dev
+/dev
+EOF
+
+{
+  readlink -e / || fail=1
+  readlink -e // || fail=1
+  readlink -e /// || fail=1
+  readlink -e /.//.. || fail=1
+  readlink -e //.//.. || fail=1
+  readlink -e ///.//.. || fail=1
+  readlink -e one || fail=1
+  readlink -e two || fail=1
+  readlink -e three || fail=1
+  readlink -e one-dots || fail=1
+  readlink -e two-dots || fail=1
+  readlink -e three-dots || fail=1
+  readlink -e one-dev || fail=1
+  # We know /dev exists, but cannot assume //dev exists
+  readlink -f two-dev || fail=1
+  readlink -e three-dev || fail=1
+  readlink -e one/dev || fail=1
+  readlink -f two/dev || fail=1
+  readlink -e three/dev || fail=1
+  readlink -e one-dots/dev || fail=1
+  readlink -f two-dots/dev || fail=1
+  readlink -e three-dots/dev || fail=1
+} > out
+
+compare exp out || fail=1
+
+Exit $fail