1 files changed, 60 insertions, 0 deletions
diff --git a/test/lisp/emacs-lisp/warnings-tests.el b/test/lisp/emacs-lisp/warnings-tests.el
new file mode 100644
index 00000000000..3b12092505d
--- /dev/null
+++ b/test/lisp/emacs-lisp/warnings-tests.el
@@ -0,0 +1,60 @@
+;;; warnings-tests.el --- tests for warnings.el  -*- lexical-binding: t; -*-
+
+;; Author: Stefan Kangas <stefankangas@gmail.com>
+
+;; Copyright (C) 2020-2022 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/>.
+
+;;; Code:
+
+(require 'ert)
+(require 'warnings)
+
+(ert-deftest test-warning-suppress-p ()
+  (should (warning-suppress-p 'foo '((foo))))
+  (should (warning-suppress-p '(foo bar) '((foo bar))))
+  (should (warning-suppress-p '(foo bar baz) '((foo bar))))
+  (should-not (warning-suppress-p '(foo bar baz) '((foo bax))))
+  (should-not (warning-suppress-p 'foobar nil)))
+
+(ert-deftest test-display-warning ()
+  (dolist (level '(:emergency :error :warning))
+    (with-temp-buffer
+      (display-warning '(foo) "Hello123" level (current-buffer))
+      (should (string-match "foo" (buffer-string)))
+      (should (string-match "Hello123" (buffer-string))))
+    (with-current-buffer "*Messages*"
+      (should (string-match "Hello123" (buffer-string))))))
+
+(ert-deftest test-display-warning/warning-minimum-level ()
+  ;; This test only works interactively:
+  :expected-result :failed
+  (let ((warning-minimum-level :emergency))
+    (with-temp-buffer
+      (display-warning '(foo) "baz" :warning (current-buffer)))
+    (with-current-buffer "*Messages*"
+      (should-not (string-match "baz" (buffer-string))))))
+
+(ert-deftest test-display-warning/warning-minimum-log-level ()
+  (let ((warning-minimum-log-level :error))
+    (with-temp-buffer
+      (display-warning '(foo) "hello" :warning (current-buffer))
+      (should-not (string-match "hello" (buffer-string))))))
+
+(provide 'warnings-tests)
+
+;;; warnings-tests.el ends here