[PATCH 4/4] tests: add ls classify test

[Jason Kim]

Add test for `ls` `--classify` option, particularly testing the optional
"WHEN" argument.
---
 tests/local.mk       |  1 +
 tests/ls/classify.sh | 61 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)
 create mode 100644 tests/ls/classify.sh

diff --git a/tests/local.mk b/tests/local.mk
index 594a9d0b5..799200393 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -593,6 +593,7 @@ all_tests =                                 \
   tests/ls/abmon-align.sh                      \
   tests/ls/birthtime.sh                                \
   tests/ls/block-size.sh                       \
+  tests/ls/classify.sh                         \
   tests/ls/color-clear-to-eol.sh               \
   tests/ls/color-dtype-dir.sh                  \
   tests/ls/color-norm.sh                       \
diff --git a/tests/ls/classify.sh b/tests/ls/classify.sh
new file mode 100644
index 000000000..214657eed
--- /dev/null
+++ b/tests/ls/classify.sh
@@ -0,0 +1,61 @@
+#!/bin/sh
+# Test --classify processing
+
+# Copyright (C) 2020-2020 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ ls
+
+mkdir testdir || framework_failure_
+cd testdir || framework_failure_
+mkdir dir
+touch regular executable
+chmod a+x executable
+ln -s regular slink-reg
+ln -s dir slink-dir
+ln -s nowhere slink-dangle
+mknod block b 20 20 2> /dev/null && block="block
+"
+mknod char c 10 10 2> /dev/null && char="char
+"
+mkfifo_or_skip_ fifo
+cd ..
+
+cat <<EOF > exp
+$block${char}dir/
+executable*
+fifo|
+regular
+slink-dangle@
+slink-dir@
+slink-reg@
+EOF
+sed 's/[*/@|]//' exp > exp2
+
+ls --classify testdir > out || fail=1
+ls --classify=always testdir > out2 || fail=1
+ls --classify=auto testdir > out3 || fail=1
+ls --classify=never testdir > out4 || fail=1
+
+compare exp out || fail=1
+
+compare exp out2 || fail=1
+
+compare exp2 out3 || fail=1
+
+compare exp2 out4 || fail=1
+
+Exit $fail
-- 
2.26.1