1 files changed, 104 insertions, 0 deletions
diff --git a/test/lisp/mh-e/test-all-mh-variants.sh b/test/lisp/mh-e/test-all-mh-variants.sh
new file mode 100755
index 00000000000..e917d8155bc
--- /dev/null
+++ b/test/lisp/mh-e/test-all-mh-variants.sh
@@ -0,0 +1,104 @@
+#! /bin/bash
+# Run the mh-utils-tests against all MH variants found on this system.
+
+# Copyright (C) 2021 Free Software Foundation, Inc.
+
+# This file is part of GNU Emacs.
+
+# GNU Emacs 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.
+
+# GNU Emacs 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 GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+# Commentary:
+
+# By default runs all tests; test names or Emacs-style regexps may be
+# given on the command line to run just those tests.
+#
+# Option -d turns on Emacs variable mh-test-utils-debug-mocks, which
+# causes the tests to output all interactions with the file system.
+
+# If you want to run the tests for only one MH variant, you don't need
+# to use this script, because "make" can do it.  See the commentary at
+# the top of ./mh-utils-tests.el for the recipe.
+
+debug=
+if [[ "$1" = -* ]]; then
+    if [[ "$1" != -d ]]; then
+        echo "Usage: $(basename "$0") [-d] [test ...]" >&2
+        exit 2
+    fi
+    debug=t
+    shift
+fi
+
+shopt -s extglob
+ert_test_list=()
+for tst; do
+    # Guess the type the test spec
+    case $tst in
+        *[\[\].*+\\]*)  # Regexp: put in string quotes
+            ert_test_list+=("\"$tst\"")
+            ;;
+        *)  # Lisp expression, keyword, or symbol: use as is
+            ert_test_list+=("$tst")
+            ;;
+    esac
+done
+if [[ ${#ert_test_list[@]} -eq 0 ]]; then
+    # t means true for all tests, runs everything
+    ert_test_list=(t)
+fi
+
+# This script is 3 directories down in the Emacs source tree.
+cd "$(dirname "$0")"
+cd ../../..
+emacs=(src/emacs --batch -Q)
+
+# MH-E has a good list of directories where an MH variant might be installed,
+# so we look in each of those.
+read -r -a mh_sys_path \
+    < <("${emacs[@]}" -l mh-e --eval "(princ mh-sys-path)" | sed 's/[()]//g')
+
+have_done_mocked_variant=false
+declare -i tests_total=0 tests_passed=0
+
+for path in "${mh_sys_path[@]}"; do
+    if [[ ! -x "$path/mhparam" ]]; then
+        if [[ "$have_done_mocked_variant" = false ]]; then
+            have_done_mocked_variant=true
+        else
+            continue
+        fi
+    fi
+    echo "Testing with PATH $path"
+    ((++tests_total))
+    # The LD_LIBRARY_PATH setting is needed
+    # to run locally installed Mailutils.
+    TEST_MH_PATH=$path TEST_MH_DEBUG=$debug \
+    LD_LIBRARY_PATH=/usr/local/lib HOME=/nonexistent \
+    "${emacs[@]}" -l ert \
+        --eval "(setq load-prefer-newer t)" \
+        --eval "(load \"$PWD/test/lisp/mh-e/mh-utils-tests\" nil t)" \
+        --eval "(ert-run-tests-batch-and-exit '(or ${ert_test_list[*]}))" \
+        && ((++tests_passed))
+done
+
+if (( tests_total == 0 )); then
+    echo "NO tests run"
+    exit 1
+elif (( tests_total == tests_passed )); then
+    echo "All tested variants pass: $tests_passed/$tests_total"
+else
+    echo "Tested variants passing: $tests_passed/$tests_total," \
+         "FAILING: $((tests_total - tests_passed))/$tests_total"
+    exit 1
+fi