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;;; go-comment-test.el
;; Copyright 2020 The go-mode Authors. All rights reserved. Use of
;; this source code is governed by a BSD-style license that can be
;; found in the LICENSE file.
(require 'ert)
(require 'go-mode)
(require 'cl-lib)
(ert-deftest go--comment-region ()
(go--should-comment
"
<var foo int
>"
"
// var foo int
")
(go--should-comment
"
<// var foo int
>"
"
var foo int
")
(go--should-comment
"var <foo> int"
"var /* foo */ int")
(go--should-comment
"var </* foo */> int"
"var foo int"))
(defun go--should-comment (got expected)
"Run `comment-dwim' against GOT and make sure it matches EXPECTED.
<> in GOT represents point. If they aren't next to each other, then it
represents point and mark to test the region based comment-region."
(with-temp-buffer
(go-mode)
(transient-mark-mode)
(insert got)
(goto-char (point-min))
(let ((beg (progn (search-forward "<") (delete-char -1) (point)))
(end (progn (search-forward ">") (delete-char -1) (point))))
(when (/= beg end)
(set-mark beg))
(goto-char end)
(call-interactively 'comment-dwim)
(should (string= (buffer-string) expected)))))
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