1 files changed, 59 insertions, 0 deletions
diff --git a/tests/split/suffix-auto-length.sh b/tests/split/suffix-auto-length.sh
new file mode 100755
index 0000000..3f9378b
--- /dev/null
+++ b/tests/split/suffix-auto-length.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+# Test the suffix auto width functionality
+
+# Copyright (C) 2012-2022 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ split
+
+
+# ensure auto widening is off when start number specified
+truncate -s12 file.in || framework_failure_
+returns_ 1 split file.in -b1 --numeric=89 || fail=1
+test "$(ls -1 x* | wc -l)" = 11 || fail=1
+rm -f x*
+
+# ensure auto widening works when no start num specified
+truncate -s91 file.in || framework_failure_
+for prefix in 'x' 'xx' ''; do
+    for add_suffix in '.txt' ''; do
+      split file.in "$prefix" -b1 --numeric --additional-suffix="$add_suffix" \
+        || fail=1
+      test "$(ls -1 $prefix*[0-9]*$add_suffix | wc -l)" = 91 || fail=1
+      test -e "${prefix}89$add_suffix" || fail=1
+      test -e "${prefix}9000$add_suffix" || fail=1
+      rm -f $prefix*[0-9]*$add_suffix
+    done
+done
+
+# ensure auto width with --number and start num < number of files
+# That's the single run use case which is valid to adjust suffix len
+truncate -s100 file.in || framework_failure_
+split --numeric-suffixes=1 --number=r/100 file.in || fail=1
+rm -f x*
+
+# ensure no auto width with --number and start num >= number of files
+# That's the multi run use case which is invalid to adjust suffix len
+# as that would result in an incorrect order for the total output file set
+returns_ 1 split --numeric-suffixes=100 --number=r/100 file.in || fail=1
+
+# coreutils v8.24 - v8.31 inclusive would incorrectly auto calculate
+# a suffix length that was too small, when the number of files was
+# evenly divisible by the suffix base (10,16,26).
+truncate -s0 file.in || framework_failure_
+split --numeric-suffixes --number=110 file.in || fail=1
+
+Exit $fail