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;;; etags-tests.el --- Test suite for etags.el.
;; Copyright (C) 2016-2019 Free Software Foundation, Inc.
;; Author: Eli Zaretskii <eliz@gnu.org>
;; 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 'etags)
(eval-when-compile (require 'cl-lib))
(defvar his-masters-voice t)
(defconst etags-tests--test-dir
(or (getenv "EMACS_TEST_DIRECTORY")
(expand-file-name "../../.."
(or load-file-name buffer-file-name))))
(defun y-or-n-p (_prompt)
"Replacement for `y-or-n-p' that returns what we tell it to."
his-masters-voice)
(ert-deftest etags-bug-158 ()
"Test finding tags with local and global tags tables."
(let ((buf-with-global-tags (get-buffer-create "*buf-global*"))
(buf-with-local-tags (get-buffer-create "*buf-local*"))
xref-buf)
(set-buffer buf-with-global-tags)
(setq default-directory (expand-file-name "."))
(visit-tags-table
(expand-file-name "manual/etags/ETAGS.good_1" etags-tests--test-dir))
;; Check that tags in ETAGS.good_1 are recognized.
(setq xref-buf (xref-find-definitions "LL_Task_Procedure_Access/t"))
(should (bufferp xref-buf))
(kill-buffer xref-buf)
(setq xref-buf (xref-find-definitions "PrintAdd"))
(should (bufferp xref-buf))
(kill-buffer xref-buf)
;; Check that tags not in ETAGS.good_1, but in ETAGS.good_3, are
;; NOT recognized.
(should-error (xref-find-definitions "intNumber") :type 'user-error)
(kill-buffer xref-buf)
(set-buffer buf-with-local-tags)
(setq default-directory (expand-file-name "."))
(let (his-masters-voice)
(visit-tags-table
(expand-file-name "manual/etags/ETAGS.good_3" etags-tests--test-dir)
t))
;; Check that tags in ETAGS.good_1 are recognized.
(setq xref-buf (xref-find-definitions "LL_Task_Procedure_Access/t"))
(should (bufferp xref-buf))
(kill-buffer xref-buf)
(setq xref-buf (xref-find-definitions "PrintAdd"))
(should (bufferp xref-buf))
(kill-buffer xref-buf)
;; Check that tags in ETAGS.good_3 are recognized. This is a test
;; for bug#158.
(setq xref-buf (xref-find-definitions "intNumber"))
(should (or (null xref-buf)
(bufferp xref-buf)))
;; Bug #17326
(should (string= (file-name-nondirectory
(buffer-local-value 'tags-file-name buf-with-local-tags))
"ETAGS.good_3"))
(should (string= (file-name-nondirectory
(default-value 'tags-file-name))
"ETAGS.good_1"))
(if (bufferp xref-buf) (kill-buffer xref-buf))))
(ert-deftest etags-bug-23164 ()
"Test that setting a local value of tags table doesn't signal errors."
(set-buffer (get-buffer-create "*foobar*"))
(fundamental-mode)
(visit-tags-table
(expand-file-name "manual/etags/ETAGS.good_3" etags-tests--test-dir)
t)
(should (equal (should-error (xref-find-definitions "foobar123"))
'(user-error "No definitions found for: foobar123"))))
(ert-deftest etags-buffer-local-tags-table-list ()
"Test that a buffer-local value of `tags-table-list' is used."
(let ((file (make-temp-file "etag-test-tmpfile")))
(unwind-protect
(progn
(set-buffer (find-file-noselect file))
(fundamental-mode)
(setq-local tags-table-list
(list (expand-file-name "manual/etags/ETAGS.good_3"
etags-tests--test-dir)))
(cl-letf ((tag-tables tags-table-list)
(tags-file-name nil)
((symbol-function 'read-file-name)
(lambda (&rest _)
(error "We should not prompt the user"))))
(should (visit-tags-table-buffer))
(should (equal tags-file-name (car tag-tables)))))
(delete-file file))))
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