tests: basenc: add a test for bounded memory operation

* tests/basenc/basenc-bounded-memory.sh: New file.
* tests/local.mk (all_tests): Add the test.

diff --git a/tests/basenc/basenc-bounded-memory.sh b/tests/basenc/basenc-bounded-memory.sh
new file mode 100755 (executable)
index 0000000..8ac2d1e
--- /dev/null
+++ b/tests/basenc/basenc-bounded-memory.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+# Test that basenc can work on files larger than the systems memory.
+
+# Copyright (C) 2025 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ basenc
+
+vm=$(get_min_ulimit_v_ basenc /dev/null)
+
+# Check all except for --base58.
+for algorithm in '--base64' '--base64url' '--base32' '--base32hex' '--base16' \
+                 '--base2msbf' '--base2lsbf' '--z85'; do
+  timeout 0.5 $SHELL -c \
+    "(ulimit -v $(($vm+6000)) \
+      && basenc $algorithm </dev/zero >/dev/null 2>err)"
+  ret=$?
+  test -f err || skip_ 'shell ulimit failure'
+  test $ret = 124 || {
+    fail=1
+    cat err
+    echo "basenc $algorithm used too much memory" >&2
+  }
+done
+
+Exit $fail

diff --git a/tests/local.mk b/tests/local.mk
index 52184b7ac2c855daff06e05a9c36bf721f5c168b..4c02cc65d72cbc06eb264d54b3af60037234e9d1 100644 (file)
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -298,6 +298,7 @@ all_tests =                                 \
   tests/misc/basename.pl                       \
   tests/basenc/base64.pl                       \
   tests/basenc/basenc.pl                       \
+  tests/basenc/basenc-bounded-memory.sh                \
   tests/basenc/basenc-large.sh                 \
   tests/misc/close-stdout.sh                   \
   tests/chroot/chroot-fail.sh                  \