my-emacs-d/elpa/company-0.8.5/company-tests.el

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;;; company-tests.el --- company-mode tests -*- lexical-binding: t -*-
;; Copyright (C) 2011, 2013-2014 Free Software Foundation, Inc.
;; Author: Nikolaj Schumacher
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'ert)
(require 'company)
(require 'company-keywords)
(require 'company-clang)
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(defun company--column (&optional pos)
(car (company--col-row pos)))
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;;; Core
(ert-deftest company-sorted-keywords ()
"Test that keywords in `company-keywords-alist' are in alphabetical order."
(dolist (pair company-keywords-alist)
(when (consp (cdr pair))
(let ((prev (cadr pair)))
(dolist (next (cddr pair))
(should (not (equal prev next)))
(should (string< prev next))
(setq prev next))))))
(ert-deftest company-good-prefix ()
(let ((company-minimum-prefix-length 5)
company-abort-manual-when-too-short
company--manual-action ;idle begin
(company-selection-changed t)) ;has no effect
(should (eq t (company--good-prefix-p "!@#$%")))
(should (eq nil (company--good-prefix-p "abcd")))
(should (eq nil (company--good-prefix-p 'stop)))
(should (eq t (company--good-prefix-p '("foo" . 5))))
(should (eq nil (company--good-prefix-p '("foo" . 4))))
(should (eq t (company--good-prefix-p '("foo" . t))))))
(ert-deftest company--manual-prefix-set-and-unset ()
(with-temp-buffer
(insert "ab")
(company-mode)
(let (company-frontends
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abc" "abd")))))))
(company-manual-begin)
(should (equal "ab" company--manual-prefix))
(company-abort)
(should (null company--manual-prefix)))))
(ert-deftest company-abort-manual-when-too-short ()
(let ((company-minimum-prefix-length 5)
(company-abort-manual-when-too-short t)
(company-selection-changed t)) ;has not effect
(let ((company--manual-action nil)) ;idle begin
(should (eq t (company--good-prefix-p "!@#$%")))
(should (eq t (company--good-prefix-p '("foo" . 5))))
(should (eq t (company--good-prefix-p '("foo" . t)))))
(let ((company--manual-action t)
(company--manual-prefix "abc")) ;manual begin from this prefix
(should (eq t (company--good-prefix-p "!@#$")))
(should (eq nil (company--good-prefix-p "ab")))
(should (eq nil (company--good-prefix-p 'stop)))
(should (eq t (company--good-prefix-p '("foo" . 4))))
(should (eq t (company--good-prefix-p "abcd")))
(should (eq t (company--good-prefix-p "abc")))
(should (eq t (company--good-prefix-p '("bar" . t)))))))
(ert-deftest company-multi-backend-with-lambdas ()
(let ((company-backend
(list (lambda (command &optional arg &rest ignore)
(cl-case command
(prefix "z")
(candidates '("a" "b"))))
(lambda (command &optional arg &rest ignore)
(cl-case command
(prefix "z")
(candidates '("c" "d")))))))
(should (equal (company-call-backend 'candidates "z") '("a" "b" "c" "d")))))
(ert-deftest company-multi-backend-filters-backends-by-prefix ()
(let ((company-backend
(list (lambda (command &optional arg &rest ignore)
(cl-case command
(prefix (cons "z" t))
(candidates '("a" "b"))))
(lambda (command &optional arg &rest ignore)
(cl-case command
(prefix "t")
(candidates '("c" "d"))))
(lambda (command &optional arg &rest ignore)
(cl-case command
(prefix "z")
(candidates '("e" "f")))))))
(should (equal (company-call-backend 'candidates "z") '("a" "b" "e" "f")))))
(ert-deftest company-multi-backend-remembers-candidate-backend ()
(let ((company-backend
(list (lambda (command &optional arg)
(cl-case command
(ignore-case nil)
(annotation "1")
(candidates '("a" "c"))
(post-completion "13")))
(lambda (command &optional arg)
(cl-case command
(ignore-case t)
(annotation "2")
(candidates '("b" "d"))
(post-completion "42")))
(lambda (command &optional arg)
(cl-case command
(annotation "3")
(candidates '("e"))
(post-completion "74"))))))
(let ((candidates (company-calculate-candidates nil)))
(should (equal candidates '("a" "b" "c" "d" "e")))
(should (equal t (company-call-backend 'ignore-case)))
(should (equal "1" (company-call-backend 'annotation (nth 0 candidates))))
(should (equal "2" (company-call-backend 'annotation (nth 1 candidates))))
(should (equal "13" (company-call-backend 'post-completion (nth 2 candidates))))
(should (equal "42" (company-call-backend 'post-completion (nth 3 candidates))))
(should (equal "3" (company-call-backend 'annotation (nth 4 candidates))))
(should (equal "74" (company-call-backend 'post-completion (nth 4 candidates)))))))
(ert-deftest company-multi-backend-handles-keyword-with ()
(let ((primo (lambda (command &optional arg)
(cl-case command
(prefix "a")
(candidates '("abb" "abc" "abd")))))
(secundo (lambda (command &optional arg)
(cl-case command
(prefix "a")
(candidates '("acc" "acd"))))))
(let ((company-backend (list 'ignore 'ignore :with secundo)))
(should (null (company-call-backend 'prefix))))
(let ((company-backend (list 'ignore primo :with secundo)))
(should (equal "a" (company-call-backend 'prefix)))
(should (equal '("abb" "abc" "abd" "acc" "acd")
(company-call-backend 'candidates "a"))))))
(ert-deftest company-begin-backend-failure-doesnt-break-company-backends ()
(with-temp-buffer
(insert "a")
(company-mode)
(should-error
(company-begin-backend (lambda (command &rest ignore))))
(let (company-frontends
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix "a")
(candidates '("a" "ab" "ac")))))))
(let (this-command)
(company-call 'complete))
(should (eq 3 company-candidates-length)))))
(ert-deftest company-require-match-explicit ()
(with-temp-buffer
(insert "ab")
(company-mode)
(let (company-frontends
(company-require-match 'company-explicit-action-p)
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abc" "abd")))))))
(let (this-command)
(company-complete))
(let ((last-command-event ?e))
(company-call 'self-insert-command 1))
(should (eq 2 company-candidates-length))
(should (eq 3 (point))))))
(ert-deftest company-dont-require-match-when-idle ()
(with-temp-buffer
(insert "ab")
(company-mode)
(let (company-frontends
(company-minimum-prefix-length 2)
(company-require-match 'company-explicit-action-p)
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abc" "abd")))))))
(company-idle-begin (current-buffer) (selected-window)
(buffer-chars-modified-tick) (point))
(should (eq 2 company-candidates-length))
(let ((last-command-event ?e))
(company-call 'self-insert-command 1))
(should (eq nil company-candidates-length))
(should (eq 4 (point))))))
(ert-deftest company-dont-require-match-if-old-prefix-ended-and-was-a-match ()
(with-temp-buffer
(insert "ab")
(company-mode)
(let (company-frontends
(company-require-match 'company-explicit-action-p)
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (company-grab-word))
(candidates '("abc" "ab" "abd"))
(sorted t))))))
(let (this-command)
(company-complete))
(let ((last-command-event ?e))
(company-call 'self-insert-command 1))
(should (eq 3 company-candidates-length))
(should (eq 3 (point)))
(let ((last-command-event ? ))
(company-call 'self-insert-command 1))
(should (null company-candidates-length))
(should (eq 4 (point))))))
(ert-deftest company-should-complete-whitelist ()
(with-temp-buffer
(insert "ab")
(company-mode)
(let (company-frontends
company-begin-commands
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abc" "abd")))))))
(let ((company-continue-commands nil))
(let (this-command)
(company-complete))
(company-call 'backward-delete-char 1)
(should (null company-candidates-length)))
(let ((company-continue-commands '(backward-delete-char)))
(let (this-command)
(company-complete))
(company-call 'backward-delete-char 1)
(should (eq 2 company-candidates-length))))))
(ert-deftest company-should-complete-blacklist ()
(with-temp-buffer
(insert "ab")
(company-mode)
(let (company-frontends
company-begin-commands
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abc" "abd")))))))
(let ((company-continue-commands '(not backward-delete-char)))
(let (this-command)
(company-complete))
(company-call 'backward-delete-char 1)
(should (null company-candidates-length)))
(let ((company-continue-commands '(not backward-delete-char-untabify)))
(let (this-command)
(company-complete))
(company-call 'backward-delete-char 1)
(should (eq 2 company-candidates-length))))))
(ert-deftest company-auto-complete-explicit ()
(with-temp-buffer
(insert "ab")
(company-mode)
(let (company-frontends
(company-auto-complete 'company-explicit-action-p)
(company-auto-complete-chars '(? ))
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abcd" "abef")))))))
(let (this-command)
(company-complete))
(let ((last-command-event ? ))
(company-call 'self-insert-command 1))
(should (string= "abcd " (buffer-string))))))
(ert-deftest company-no-auto-complete-when-idle ()
(with-temp-buffer
(insert "ab")
(company-mode)
(let (company-frontends
(company-auto-complete 'company-explicit-action-p)
(company-auto-complete-chars '(? ))
(company-minimum-prefix-length 2)
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abcd" "abef")))))))
(company-idle-begin (current-buffer) (selected-window)
(buffer-chars-modified-tick) (point))
(let ((last-command-event ? ))
(company-call 'self-insert-command 1))
(should (string= "ab " (buffer-string))))))
(ert-deftest company-clears-explicit-action-when-no-matches ()
(with-temp-buffer
(company-mode)
(let (company-frontends
company-backends)
(company-call 'manual-begin) ;; fails
(should (null company-candidates))
(should (null (company-explicit-action-p))))))
(ert-deftest company-ignore-case-replaces-prefix ()
(with-temp-buffer
(company-mode)
(let (company-frontends
company-end-of-buffer-workaround
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abcd" "abef"))
(ignore-case t))))))
(insert "A")
(let (this-command)
(company-complete))
(should (string= "ab" (buffer-string)))
(delete-char -2)
(insert "A") ; hack, to keep it in one test
(company-complete-selection)
(should (string= "abcd" (buffer-string))))))
(ert-deftest company-ignore-case-with-keep-prefix ()
(with-temp-buffer
(insert "AB")
(company-mode)
(let (company-frontends
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("abcd" "abef"))
(ignore-case 'keep-prefix))))))
(let (this-command)
(company-complete))
(company-complete-selection)
(should (string= "ABcd" (buffer-string))))))
(ert-deftest company-non-prefix-completion ()
(with-temp-buffer
(insert "tc")
(company-mode)
(let (company-frontends
company-end-of-buffer-workaround
(company-backends
(list (lambda (command &optional arg)
(cl-case command
(prefix (buffer-substring (point-min) (point)))
(candidates '("tea-cup" "teal-color")))))))
(let (this-command)
(company-complete))
(should (string= "tc" (buffer-string)))
(company-complete-selection)
(should (string= "tea-cup" (buffer-string))))))
(ert-deftest company-pseudo-tooltip-does-not-get-displaced ()
:tags '(interactive)
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(save-excursion (insert " ff"))
(company-mode)
(let ((company-frontends '(company-pseudo-tooltip-frontend))
(company-begin-commands '(self-insert-command))
(company-backends
(list (lambda (c &optional arg)
(cl-case c (prefix "") (candidates '("a" "b" "c")))))))
(let (this-command)
(company-call 'complete))
(company-call 'open-line 1)
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(should (eq 1 (overlay-start company-pseudo-tooltip-overlay)))))))
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(ert-deftest company-pseudo-tooltip-show ()
:tags '(interactive)
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert "aaaa\n bb\nccccccc\nddd")
(search-backward "bb")
(let ((col (company--column))
(company-candidates-length 2)
(company-candidates '("123" "45"))
(company-backend 'ignore))
(company-pseudo-tooltip-show (company--row) col 0)
(let ((ov company-pseudo-tooltip-overlay))
;; With margins.
(should (eq (overlay-get ov 'company-width) 5))
;; FIXME: Make it 2?
(should (eq (overlay-get ov 'company-height) company-tooltip-limit))
(should (eq (overlay-get ov 'company-column) col))
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(should (string= (overlay-get ov 'company-display)
"\n 123 \nc 45 c\nddd\n")))))))
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(ert-deftest company-pseudo-tooltip-edit-updates-width ()
:tags '(interactive)
(with-temp-buffer
(set-window-buffer nil (current-buffer))
(let ((company-candidates-length 5)
(company-candidates '("123" "45" "67" "89" "1011"))
(company-backend 'ignore)
(company-tooltip-limit 4)
(company-tooltip-offset-display 'scrollbar))
(company-pseudo-tooltip-show (company--row)
(company--column)
0)
(should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
6))
(company-pseudo-tooltip-edit 4)
(should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
7)))))
(ert-deftest company-preview-show-with-annotations ()
:tags '(interactive)
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(save-excursion (insert "\n"))
(let ((company-candidates-length 1)
(company-candidates '("123")))
(company-preview-show-at-point (point))
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(let* ((ov company-preview-overlay)
(str (overlay-get ov 'after-string)))
(should (string= str "123"))
(should (eq (get-text-property 0 'cursor str) t)))))))
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(ert-deftest company-pseudo-tooltip-show-with-annotations ()
:tags '(interactive)
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert " ")
(save-excursion (insert "\n"))
(let ((company-candidates-length 2)
(company-backend (lambda (action &optional arg &rest _ignore)
(when (eq action 'annotation)
(cdr (assoc arg '(("123" . "(4)")))))))
(company-candidates '("123" "45"))
company-tooltip-align-annotations)
(company-pseudo-tooltip-show-at-point (point) 0)
(let ((ov company-pseudo-tooltip-overlay))
;; With margins.
(should (eq (overlay-get ov 'company-width) 8))
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(should (string= (overlay-get ov 'company-display)
"\n 123(4) \n 45 \n")))))))
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(ert-deftest company-pseudo-tooltip-show-with-annotations-right-aligned ()
:tags '(interactive)
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert " ")
(save-excursion (insert "\n"))
(let ((company-candidates-length 3)
(company-backend (lambda (action &optional arg &rest _ignore)
(when (eq action 'annotation)
(cdr (assoc arg '(("123" . "(4)")
("67" . "(891011)")))))))
(company-candidates '("123" "45" "67"))
(company-tooltip-align-annotations t))
(company-pseudo-tooltip-show-at-point (point) 0)
(let ((ov company-pseudo-tooltip-overlay))
;; With margins.
(should (eq (overlay-get ov 'company-width) 13))
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(should (string= (overlay-get ov 'company-display)
"\n 123 (4) \n 45 \n 67 (891011) \n")))))))
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(ert-deftest company-create-lines-shows-numbers ()
(let ((company-show-numbers t)
(company-candidates '("x" "y" "z"))
(company-candidates-length 3)
(company-backend 'ignore))
(should (equal '(" x 1 " " y 2 " " z 3 ")
(company--create-lines 0 999)))))
(ert-deftest company-create-lines-truncates-annotations ()
(let* ((ww (company--window-width))
(data `(("1" . "(123)")
("2" . nil)
("3" . ,(concat "(" (make-string (- ww 2) ?4) ")"))
(,(make-string ww ?4) . "<4>")))
(company-candidates (mapcar #'car data))
(company-candidates-length 4)
(company-tooltip-margin 1)
(company-backend (lambda (cmd &optional arg)
(when (eq cmd 'annotation)
(cdr (assoc arg data)))))
company-tooltip-align-annotations)
(should (equal (list (format " 1(123)%s " (company-space-string (- ww 8)))
(format " 2%s " (company-space-string (- ww 3)))
(format " 3(444%s " (make-string (- ww 7) ?4))
(format " %s " (make-string (- ww 2) ?4)))
(company--create-lines 0 999)))
(let ((company-tooltip-align-annotations t))
(should (equal (list (format " 1%s(123) " (company-space-string (- ww 8)))
(format " 2%s " (company-space-string (- ww 3)))
(format " 3 (444%s " (make-string (- ww 8) ?4))
(format " %s " (make-string (- ww 2) ?4)))
(company--create-lines 0 999))))))
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(ert-deftest company-create-lines-truncates-common-part ()
(let* ((ww (company--window-width))
(company-candidates-length 2)
(company-tooltip-margin 1)
(company-backend #'ignore))
(let* ((company-common (make-string (- ww 3) ?1))
(company-candidates `(,(concat company-common "2")
,(concat company-common "3"))))
(should (equal (list (format " %s2 " (make-string (- ww 3) ?1))
(format " %s3 " (make-string (- ww 3) ?1)))
(company--create-lines 0 999))))
(let* ((company-common (make-string (- ww 2) ?1))
(company-candidates `(,(concat company-common "2")
,(concat company-common "3"))))
(should (equal (list (format " %s " company-common)
(format " %s " company-common))
(company--create-lines 0 999))))
(let* ((company-common (make-string ww ?1))
(company-candidates `(,(concat company-common "2")
,(concat company-common "3")))
(res (company--create-lines 0 999)))
(should (equal (list (format " %s " (make-string (- ww 2) ?1))
(format " %s " (make-string (- ww 2) ?1)))
res))
(should (eq 'company-tooltip-common-selection
(get-text-property (- ww 2) 'face
(car res))))
(should (eq 'company-tooltip-selection
(get-text-property (1- ww) 'face
(car res))))
)))
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(ert-deftest company-column-with-composition ()
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:tags '(interactive)
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(with-temp-buffer
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(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert "lambda ()")
(compose-region 1 (1+ (length "lambda")) "\\")
(should (= (company--column) 4)))))
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(ert-deftest company-column-with-line-prefix ()
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:tags '(interactive)
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(with-temp-buffer
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(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert "foo")
(put-text-property (point-min) (point) 'line-prefix " ")
(should (= (company--column) 5)))))
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(ert-deftest company-column-with-line-prefix-on-empty-line ()
:tags '(interactive)
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(with-temp-buffer
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(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert "\n")
(forward-char -1)
(put-text-property (point-min) (point-max) 'line-prefix " ")
(should (= (company--column) 2)))))
(ert-deftest company-column-with-tabs ()
:tags '(interactive)
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert "|\t|\t|\t(")
(let ((tab-width 8))
(should (= (company--column) 25))))))
(ert-deftest company-row-with-header-line-format ()
:tags '(interactive)
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(should (= (company--row) 0))
(setq header-line-format "aaaaaaa")
(should (= (company--row) 0)))))
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(ert-deftest company-plainify ()
(let ((tab-width 8))
(should (equal-including-properties
(company-plainify "\tabc\td\t")
(concat " "
"abc "
"d "))))
(should (equal-including-properties
(company-plainify (propertize "foobar" 'line-prefix "-*-"))
"-*-foobar")))
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(ert-deftest company-buffer-lines-with-lines-folded ()
:tags '(interactive)
(with-temp-buffer
(insert (propertize "aaa\nbbb\nccc\nddd\n" 'display "aaa+\n"))
(insert "eee\nfff\nggg")
(should (equal (company-buffer-lines (point-min) (point-max))
'("aaa" "eee" "fff" "ggg")))))
(ert-deftest company-buffer-lines-with-multiline-display ()
:tags '(interactive)
(with-temp-buffer
(insert (propertize "a" 'display "bbb\nccc\ndddd\n"))
(insert "eee\nfff\nggg")
(should (equal (company-buffer-lines (point-min) (point-max))
'("" "" "" "eee" "fff" "ggg")))))
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(ert-deftest company-modify-line ()
(let ((str "-*-foobar"))
(should (equal-including-properties
(company-modify-line str "zz" 4)
"-*-fzzbar"))
(should (equal-including-properties
(company-modify-line str "xx" 0)
"xx-foobar"))
(should (equal-including-properties
(company-modify-line str "zz" 10)
"-*-foobar zz"))))
(ert-deftest company-scrollbar-bounds ()
(should (equal nil (company--scrollbar-bounds 0 3 3)))
(should (equal nil (company--scrollbar-bounds 0 4 3)))
(should (equal '(0 . 0) (company--scrollbar-bounds 0 1 2)))
(should (equal '(1 . 1) (company--scrollbar-bounds 2 2 4)))
(should (equal '(2 . 3) (company--scrollbar-bounds 7 4 12)))
(should (equal '(1 . 2) (company--scrollbar-bounds 3 4 12)))
(should (equal '(1 . 3) (company--scrollbar-bounds 4 5 11))))
;;; Async
(defun company-async-backend (command &optional arg)
(pcase command
(`prefix "foo")
(`candidates
(cons :async
(lambda (cb)
(run-with-timer 0.05 nil
#'funcall cb '("abc" "abd")))))))
(ert-deftest company-call-backend-forces-sync ()
(let ((company-backend 'company-async-backend)
(company-async-timeout 0.1))
(should (equal '("abc" "abd") (company-call-backend 'candidates)))))
(ert-deftest company-call-backend-errors-on-timeout ()
(with-temp-buffer
(let* ((company-backend (lambda (command &optional _arg)
(pcase command
(`candidates (cons :async 'ignore)))))
(company-async-timeout 0.1)
(err (should-error (company-call-backend 'candidates "foo"))))
(should (string-match-p "async timeout" (cadr err))))))
(ert-deftest company-call-backend-raw-passes-return-value-verbatim ()
(let ((company-backend 'company-async-backend))
(should (equal "foo" (company-call-backend-raw 'prefix)))
(should (equal :async (car (company-call-backend-raw 'candidates "foo"))))
(should (equal 'closure (cadr (company-call-backend-raw 'candidates "foo"))))))
(ert-deftest company-manual-begin-forces-async-candidates-to-sync ()
(with-temp-buffer
(company-mode)
(let (company-frontends
company-transformers
(company-backends (list 'company-async-backend)))
(company-manual-begin)
(should (equal "foo" company-prefix))
(should (equal '("abc" "abd") company-candidates)))))
(ert-deftest company-idle-begin-allows-async-candidates ()
(with-temp-buffer
(company-mode)
(let (company-frontends
company-transformers
(company-backends (list 'company-async-backend)))
(company-idle-begin (current-buffer) (selected-window)
(buffer-chars-modified-tick) (point))
(should (null company-candidates))
(sleep-for 0.1)
(should (equal "foo" company-prefix))
(should (equal '("abc" "abd") company-candidates)))))
(ert-deftest company-idle-begin-cancels-async-candidates-if-buffer-changed ()
(with-temp-buffer
(company-mode)
(let (company-frontends
(company-backends (list 'company-async-backend)))
(company-idle-begin (current-buffer) (selected-window)
(buffer-chars-modified-tick) (point))
(should (null company-candidates))
(insert "a")
(sleep-for 0.1)
(should (null company-candidates)))))
(ert-deftest company-idle-begin-async-allows-immediate-callbacks ()
(with-temp-buffer
(company-mode)
(let (company-frontends
(company-backends
(list (lambda (command &optional arg)
(pcase command
(`prefix (buffer-substring (point-min) (point)))
(`candidates
(let ((c (all-completions arg '("abc" "def"))))
(cons :async
(lambda (cb) (funcall cb c)))))
(`no-cache t)))))
(company-minimum-prefix-length 0))
(company-idle-begin (current-buffer) (selected-window)
(buffer-chars-modified-tick) (point))
(should (equal '("abc" "def") company-candidates))
(let ((last-command-event ?a))
(company-call 'self-insert-command 1))
(should (equal '("abc") company-candidates)))))
(ert-deftest company-multi-backend-forces-prefix-to-sync ()
(with-temp-buffer
(let ((company-backend (list 'ignore
(lambda (command)
(should (eq command 'prefix))
(cons :async
(lambda (cb)
(run-with-timer
0.01 nil
(lambda () (funcall cb nil))))))
(lambda (command)
(should (eq command 'prefix))
"foo"))))
(should (equal "foo" (company-call-backend-raw 'prefix))))
(let ((company-backend (list (lambda (_command)
(cons :async
(lambda (cb)
(run-with-timer
0.01 nil
(lambda () (funcall cb "bar"))))))
(lambda (_command)
"foo"))))
(should (equal "bar" (company-call-backend-raw 'prefix))))))
(ert-deftest company-multi-backend-merges-deferred-candidates ()
(with-temp-buffer
(let* ((immediate (lambda (command &optional arg)
(pcase command
(`prefix "foo")
(`candidates
(cons :async
(lambda (cb) (funcall cb '("f"))))))))
(company-backend (list 'ignore
(lambda (command &optional arg)
(pcase command
(`prefix "foo")
(`candidates
(should (equal arg "foo"))
(cons :async
(lambda (cb)
(run-with-timer
0.01 nil
(lambda () (funcall cb '("a" "b")))))))))
(lambda (command &optional arg)
(pcase command
(`prefix "foo")
(`candidates '("c" "d" "e"))))
immediate)))
(should (equal :async (car (company-call-backend-raw 'candidates "foo"))))
(should (equal '("a" "b" "c" "d" "e" "f")
(company-call-backend 'candidates "foo")))
(let ((company-backend (list immediate)))
(should (equal '("f") (company-call-backend 'candidates "foo")))))))
;;; Transformers
(ert-deftest company-occurrence-prefer-closest-above ()
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert "foo0
foo1
")
(save-excursion
(insert "
foo3
foo2"))
(let ((company-backend 'company-dabbrev)
(company-occurrence-weight-function
'company-occurrence-prefer-closest-above))
(should (equal '("foo1" "foo0" "foo3" "foo2" "foo4")
(company-sort-by-occurrence
'("foo0" "foo1" "foo2" "foo3" "foo4"))))))))
(ert-deftest company-occurrence-prefer-any-closest ()
(with-temp-buffer
(save-window-excursion
(set-window-buffer nil (current-buffer))
(insert "foo0
foo1
")
(save-excursion
(insert "
foo3
foo2"))
(let ((company-backend 'company-dabbrev)
(company-occurrence-weight-function
'company-occurrence-prefer-any-closest))
(should (equal '("foo1" "foo3" "foo0" "foo2" "foo4")
(company-sort-by-occurrence
'("foo0" "foo1" "foo2" "foo3" "foo4"))))))))
;;; Template
(ert-deftest company-template-removed-after-the-last-jump ()
(with-temp-buffer
(insert "{ }")
(goto-char 2)
(let ((tpl (company-template-declare-template (point) (1- (point-max)))))
(save-excursion
(dotimes (i 2)
(insert " ")
(company-template-add-field tpl (point) "foo")))
(company-call 'template-forward-field)
(should (= 3 (point)))
(company-call 'template-forward-field)
(should (= 7 (point)))
(company-call 'template-forward-field)
(should (= 11 (point)))
(should (zerop (length (overlay-get tpl 'company-template-fields))))
(should (null (overlay-buffer tpl))))))
(ert-deftest company-template-removed-after-input-and-jump ()
(with-temp-buffer
(insert "{ }")
(goto-char 2)
(let ((tpl (company-template-declare-template (point) (1- (point-max)))))
(save-excursion
(insert " ")
(company-template-add-field tpl (point) "bar"))
(company-call 'template-move-to-first tpl)
(should (= 3 (point)))
(dolist (c (string-to-list "tee"))
(let ((last-command-event c))
(company-call 'self-insert-command 1)))
(should (string= "{ tee }" (buffer-string)))
(should (overlay-buffer tpl))
(company-call 'template-forward-field)
(should (= 7 (point)))
(should (null (overlay-buffer tpl))))))
(defun company-call (name &rest args)
(let* ((maybe (intern (format "company-%s" name)))
(command (if (fboundp maybe) maybe name)))
(let ((this-command command))
(run-hooks 'pre-command-hook))
(apply command args)
(let ((this-command command))
(run-hooks 'post-command-hook))))
(ert-deftest company-template-c-like-templatify ()
(with-temp-buffer
(let ((text "foo(int a, short b)"))
(insert text)
(company-template-c-like-templatify text)
(should (equal "foo(arg0, arg1)" (buffer-string)))
(should (looking-at "arg0"))
(should (equal "int a"
(overlay-get (company-template-field-at) 'display))))))
(ert-deftest company-template-c-like-templatify-trims-after-closing-paren ()
(with-temp-buffer
(let ((text "foo(int a, short b)!@ #1334 a"))
(insert text)
(company-template-c-like-templatify text)
(should (equal "foo(arg0, arg1)" (buffer-string)))
(should (looking-at "arg0")))))
;;; Clang
(ert-deftest company-clang-objc-templatify ()
(with-temp-buffer
(let ((text "createBookWithTitle:andAuthor:"))
(insert text)
(company-clang-objc-templatify text)
(should (equal "createBookWithTitle:arg0 andAuthor:arg1" (buffer-string)))
(should (looking-at "arg0"))
(should (null (overlay-get (company-template-field-at) 'display))))))