tests: dd: add tests for conv=lcase and conv=ucase

* tests/dd/conv-case.sh: New test.
* tests/local.mk (all_tests): Add it.

diff --git a/tests/dd/conv-case.sh b/tests/dd/conv-case.sh
new file mode 100755 (executable)
index 0000000..d6ece8a
--- /dev/null
+++ b/tests/dd/conv-case.sh
@@ -0,0 +1,57 @@
+#!/bin/sh
+# test conv=lcase and conv=ucase
+
+# 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ dd
+
+printf 'abcdefghijklmnopqrstuvwxyz\n' > input-lower || framework_failure_
+printf 'ABCDEFGHIJKLMNOPQRSTUVWXYZ\n' > input-upper || framework_failure_
+
+# Check the output when all input characters are already the correct case.
+dd if=input-lower of=output-lower conv=lcase || fail=1
+cmp input-lower output-lower || fail=1
+dd if=input-upper of=output-upper conv=ucase || fail=1
+cmp input-upper output-upper || fail=1
+
+# Check the output when all input characters need case conversion.
+dd if=input-upper of=output-lower conv=lcase || fail=1
+cmp input-lower output-lower || fail=1
+dd if=input-lower of=output-upper conv=ucase || fail=1
+cmp input-upper output-upper || fail=1
+
+export LC_ALL=en_US.iso8859-1  # only lowercase form works on macOS 10.15.7
+if test "$(locale charmap 2>/dev/null | sed 's/iso/ISO-/')" = ISO-8859-1; then
+  # Case conversion should work on all single byte locales.
+  # Check it with é and É in ISO 8859-1.
+  printf '\xe9\n' > input-lower
+  printf '\xc9\n' > input-upper
+
+  # Check the output when all input characters are already the correct case.
+  dd if=input-lower of=output-lower conv=lcase || fail=1
+  cmp input-lower output-lower || fail=1
+  dd if=input-upper of=output-upper conv=ucase || fail=1
+  cmp input-upper output-upper || fail=1
+
+  # Check the output when all input characters need case conversion.
+  dd if=input-upper of=output-lower conv=lcase || fail=1
+  cmp input-lower output-lower || fail=1
+  dd if=input-lower of=output-upper conv=ucase || fail=1
+  cmp input-upper output-upper || fail=1
+fi
+
+Exit $fail

diff --git a/tests/local.mk b/tests/local.mk
index 73060f10c6d4b0250686b853c7f0d50079f606e3..8f58693afffaa19c3ef36ee7dde9a770d9084149 100644 (file)
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -573,6 +573,7 @@ all_tests =                                 \
   tests/df/skip-duplicates.sh                  \
   tests/df/skip-rootfs.sh                      \
   tests/dd/ascii.sh                            \
+  tests/dd/conv-case.sh                                \
   tests/dd/direct.sh                           \
   tests/dd/misc.sh                             \
   tests/dd/no-allocate.sh                      \