code.delx.au - gnu-emacs-elpa/blob - company-tests.el

   1 ;;; company-tests.el --- company-mode tests
   2
   3 ;; Copyright (C) 2011, 2013  Free Software Foundation, Inc.
   4
   5 ;; Author: Nikolaj Schumacher
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software: you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation, either version 3 of the License, or
  12 ;; (at your option) any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  21
  22
  23 ;;; Commentary:
  24 ;;
  25
  26 ;;; Code:
  27
  28 (eval-when-compile (require 'cl))
  29 (require 'ert)
  30 (require 'company)
  31 (require 'company-keywords)
  32 (require 'company-elisp)
  33 (require 'company-clang)
  34
  35 ;;; Core
  36
  37 (ert-deftest company-sorted-keywords ()
  38   "Test that keywords in `company-keywords-alist' are in alphabetical order."
  39   (dolist (pair company-keywords-alist)
  40     (when (consp (cdr pair))
  41       (let ((prev (cadr pair)))
  42         (dolist (next (cddr pair))
  43           (should (not (equal prev next)))
  44           (should (string< prev next))
  45           (setq prev next))))))
  46
  47 (ert-deftest company-good-prefix ()
  48   (let ((company-minimum-prefix-length 5)
  49         company--explicit-action)
  50     (should (eq t (company--good-prefix-p "!@#$%")))
  51     (should (eq nil (company--good-prefix-p "abcd")))
  52     (should (eq nil (company--good-prefix-p 'stop)))
  53     (should (eq t (company--good-prefix-p '("foo" . 5))))
  54     (should (eq nil (company--good-prefix-p '("foo" . 4))))))
  55
  56 (ert-deftest company-multi-backend-with-lambdas ()
  57   (let ((company-backend
  58          (list (lambda (command &optional arg &rest ignore)
  59                  (case command
  60                    (prefix "z")
  61                    (candidates '("a" "b"))))
  62                (lambda (command &optional arg &rest ignore)
  63                  (case command
  64                    (prefix "z")
  65                    (candidates '("c" "d")))))))
  66     (should (equal (company-call-backend 'candidates "z") '("a" "b" "c" "d")))))
  67
  68 (ert-deftest company-begin-backend-failure-doesnt-break-company-backends ()
  69   (with-temp-buffer
  70     (insert "a")
  71     (company-mode)
  72     (should-error
  73      (company-begin-backend (lambda (command &rest ignore))))
  74     (let (company-frontends
  75           (company-backends
  76            (list (lambda (command &optional arg)
  77                    (case command
  78                      (prefix "a")
  79                      (candidates '("a" "ab" "ac")))))))
  80       (let (this-command)
  81         (company-call 'complete))
  82       (should (eq 3 company-candidates-length)))))
  83
  84 (ert-deftest company-require-match-explicit ()
  85   (with-temp-buffer
  86     (insert "ab")
  87     (company-mode)
  88     (let (company-frontends
  89           (company-require-match 'company-explicit-action-p)
  90           (company-backends
  91            (list (lambda (command &optional arg)
  92                    (case command
  93                      (prefix (buffer-substring (point-min) (point)))
  94                      (candidates '("abc" "abd")))))))
  95       (let (this-command)
  96         (company-complete))
  97       (let ((last-command-event ?e))
  98         (company-call 'self-insert-command 1))
  99       (should (eq 2 company-candidates-length))
 100       (should (eq 3 (point))))))
 101
 102 (ert-deftest company-dont-require-match-when-idle ()
 103   (with-temp-buffer
 104     (insert "ab")
 105     (company-mode)
 106     (let (company-frontends
 107           (company-require-match 'company-explicit-action-p)
 108           (company-backends
 109            (list (lambda (command &optional arg)
 110                    (case command
 111                      (prefix (buffer-substring (point-min) (point)))
 112                      (candidates '("abc" "abd")))))))
 113       (company-idle-begin (current-buffer) (selected-window)
 114                           (buffer-chars-modified-tick) (point))
 115       (let ((last-command-event ?e))
 116         (company-call 'self-insert-command 1))
 117       (should (eq nil company-candidates-length))
 118       (should (eq 4 (point))))))
 119
 120 (ert-deftest company-auto-complete-explicit ()
 121   (with-temp-buffer
 122     (insert "ab")
 123     (company-mode)
 124     (let (company-frontends
 125           (company-auto-complete 'company-explicit-action-p)
 126           (company-auto-complete-chars '(? ))
 127           (company-backends
 128            (list (lambda (command &optional arg)
 129                    (case command
 130                      (prefix (buffer-substring (point-min) (point)))
 131                      (candidates '("abcd" "abef")))))))
 132       (let (this-command)
 133         (company-complete))
 134       (let ((last-command-event ? ))
 135         (company-call 'self-insert-command 1))
 136       (should (string= "abcd " (buffer-string))))))
 137
 138 (ert-deftest company-no-auto-complete-when-idle ()
 139   (with-temp-buffer
 140     (insert "ab")
 141     (company-mode)
 142     (let (company-frontends
 143           (company-auto-complete 'company-explicit-action-p)
 144           (company-auto-complete-chars '(? ))
 145           (company-backends
 146            (list (lambda (command &optional arg)
 147                    (case command
 148                      (prefix (buffer-substring (point-min) (point)))
 149                      (candidates '("abcd" "abef")))))))
 150       (company-idle-begin (current-buffer) (selected-window)
 151                           (buffer-chars-modified-tick) (point))
 152       (let ((last-command-event ? ))
 153         (company-call 'self-insert-command 1))
 154       (should (string= "ab " (buffer-string))))))
 155
 156 (ert-deftest company-clears-explicit-action-when-no-matches ()
 157   (with-temp-buffer
 158     (company-mode)
 159     (let (company-frontends
 160           company-backends)
 161       (company-call 'manual-begin) ;; fails
 162       (should (null company-candidates))
 163       (should (null (company-explicit-action-p))))))
 164
 165 (ert-deftest company-pseudo-tooltip-does-not-get-displaced ()
 166   :tags '(interactive)
 167   (with-temp-buffer
 168     (save-window-excursion
 169       (set-window-buffer nil (current-buffer))
 170       (save-excursion (insert " ff"))
 171       (company-mode)
 172       (let ((company-frontends '(company-pseudo-tooltip-frontend))
 173             (company-begin-commands '(self-insert-command))
 174             (company-backends
 175              (list (lambda (c &optional arg)
 176                      (case c (prefix "") (candidates '("a" "b" "c")))))))
 177         (let (this-command)
 178           (company-call 'complete))
 179         (company-call 'open-line 1)
 180         (should (eq 2 (overlay-start company-pseudo-tooltip-overlay)))))))
 181
 182 (ert-deftest company-pseudo-tooltip-overlay-show ()
 183   :tags '(interactive)
 184   (with-temp-buffer
 185     (save-window-excursion
 186     (set-window-buffer nil (current-buffer))
 187     (insert "aaaa\n bb\nccccc\nddd")
 188     (search-backward "bb")
 189     (let ((col (company--column))
 190           (company-candidates-length 2)
 191           (company-candidates '("123" "45")))
 192       (company-pseudo-tooltip-show (company--row) col 0)
 193       (let ((ov company-pseudo-tooltip-overlay))
 194         (should (eq (overlay-get ov 'company-width) 3))
 195         ;; FIXME: Make it 2?
 196         (should (eq (overlay-get ov 'company-height) company-tooltip-limit))
 197         (should (eq (overlay-get ov 'company-column) col))
 198         (should (string= (overlay-get ov 'company-after)
 199                          " 123\nc45 c\nddd\n")))))))
 200
 201 (ert-deftest company-column-with-composition ()
 202   (with-temp-buffer
 203     (insert "lambda ()")
 204     (compose-region 1 (1+ (length "lambda")) "\\")
 205     (should (= (company--column) 4))))
 206
 207 (ert-deftest company-column-with-line-prefix ()
 208   (with-temp-buffer
 209     (insert "foo")
 210     (put-text-property (point-min) (point) 'line-prefix "  ")
 211     (should (= (company--column) 5))))
 212
 213 (ert-deftest company-modify-line-with-line-prefix ()
 214   (let ((str (propertize "foobar" 'line-prefix "-*-")))
 215     (should (equal-including-properties
 216              (company-modify-line str "zz" 4)
 217              "-*-fzzbar"))
 218     (should (equal-including-properties
 219              (company-modify-line str "zzxx" 1)
 220              "-zzxxobar"))
 221     (should (equal-including-properties
 222              (company-modify-line str "xx" 0)
 223              "xx-foobar"))
 224     (should (equal-including-properties
 225              (company-modify-line str "zz" 10)
 226              "-*-foobar zz"))))
 227
 228 ;;; Template
 229
 230 (ert-deftest company-template-removed-after-the-last-jump ()
 231   (with-temp-buffer
 232     (insert "{ }")
 233     (goto-char 2)
 234     (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
 235       (save-excursion
 236         (dotimes (i 2)
 237           (insert " ")
 238           (company-template-add-field tpl (point) "foo")))
 239       (company-call 'template-forward-field)
 240       (should (= 3 (point)))
 241       (company-call 'template-forward-field)
 242       (should (= 7 (point)))
 243       (company-call 'template-forward-field)
 244       (should (= 11 (point)))
 245       (should (zerop (length (overlay-get tpl 'company-template-fields))))
 246       (should (null (overlay-buffer tpl))))))
 247
 248 (ert-deftest company-template-removed-after-input-and-jump ()
 249   (with-temp-buffer
 250     (insert "{ }")
 251     (goto-char 2)
 252     (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
 253       (save-excursion
 254         (insert " ")
 255         (company-template-add-field tpl (point) "bar"))
 256       (company-call 'template-move-to-first tpl)
 257       (should (= 3 (point)))
 258       (dolist (c (string-to-list "tee"))
 259         (let ((last-command-event c))
 260           (company-call 'self-insert-command 1)))
 261       (should (string= "{ tee }" (buffer-string)))
 262       (should (overlay-buffer tpl))
 263       (company-call 'template-forward-field)
 264       (should (= 7 (point)))
 265       (should (null (overlay-buffer tpl))))))
 266
 267 (defun company-call (name &rest args)
 268   (let* ((maybe (intern (format "company-%s" name)))
 269          (command (if (fboundp maybe) maybe name)))
 270     (apply command args)
 271     (let ((this-command command))
 272       (run-hooks 'post-command-hook))))
 273
 274 (ert-deftest company-template-c-like-templatify ()
 275   (with-temp-buffer
 276     (let ((text "foo(int a, short b)"))
 277       (insert text)
 278       (company-template-c-like-templatify text)
 279       (should (equal "foo(arg0, arg1)" (buffer-string)))
 280       (should (looking-at "arg0"))
 281       (should (equal "int a"
 282                      (overlay-get (company-template-field-at) 'display))))))
 283
 284 (ert-deftest company-template-c-like-templatify-trims-after-closing-paren ()
 285   (with-temp-buffer
 286     (let ((text "foo(int a, short b)!@ #1334 a"))
 287       (insert text)
 288       (company-template-c-like-templatify text)
 289       (should (equal "foo(arg0, arg1)" (buffer-string)))
 290       (should (looking-at "arg0")))))
 291
 292 ;;; Elisp
 293
 294 (defmacro company-elisp-with-buffer (contents &rest body)
 295   (declare (indent 0))
 296   `(with-temp-buffer
 297      (insert ,contents)
 298      (setq major-mode 'emacs-lisp-mode)
 299      (re-search-backward "|")
 300      (replace-match "")
 301      (let ((company-elisp-detect-function-context t))
 302        ,@body)))
 303
 304 (ert-deftest company-elisp-candidates-predicate ()
 305   (company-elisp-with-buffer
 306     "(foo ba|)"
 307     (should (eq (company-elisp--candidates-predicate "ba")
 308                 'boundp))
 309     (should (eq (let (company-elisp-detect-function-context)
 310                   (company-elisp--candidates-predicate "ba"))
 311                 'company-elisp--predicate)))
 312   (company-elisp-with-buffer
 313     "(foo| )"
 314     (should (eq (company-elisp--candidates-predicate "foo")
 315                 'fboundp))
 316     (should (eq (let (company-elisp-detect-function-context)
 317                   (company-elisp--candidates-predicate "foo"))
 318                 'company-elisp--predicate)))
 319   (company-elisp-with-buffer
 320     "(foo 'b|)"
 321     (should (eq (company-elisp--candidates-predicate "b")
 322                 'company-elisp--predicate))))
 323
 324 (ert-deftest company-elisp-candidates-predicate-in-docstring ()
 325   (company-elisp-with-buffer
 326    "(def foo () \"Doo be doo `ide|"
 327    (should (eq 'company-elisp--predicate
 328                (company-elisp--candidates-predicate "ide")))))
 329
 330 ;; This one's also an integration test.
 331 (ert-deftest company-elisp-candidates-recognizes-binding-form ()
 332   (let ((company-elisp-detect-function-context t)
 333         (obarray [when what whelp])
 334         (what 1)
 335         (whelp 2)
 336         (wisp 3))
 337     (company-elisp-with-buffer
 338       "(let ((foo 7) (wh| )))"
 339       (should (equal '("what" "whelp")
 340                      (company-elisp-candidates "wh"))))
 341     (company-elisp-with-buffer
 342       "(cond ((null nil) (wh| )))"
 343       (should (equal '("when")
 344                      (company-elisp-candidates "wh"))))))
 345
 346 (ert-deftest company-elisp-candidates-predicate-binding-without-value ()
 347   (loop for (text prefix predicate) in '(("(let (foo|" "foo" boundp)
 348                                          ("(let (foo (bar|" "bar" boundp)
 349                                          ("(let (foo) (bar|" "bar" fboundp))
 350         do
 351         (eval `(company-elisp-with-buffer
 352                  ,text
 353                  (should (eq ',predicate
 354                              (company-elisp--candidates-predicate ,prefix)))))))
 355
 356 (ert-deftest company-elisp-finds-vars ()
 357   (let ((obarray [boo bar baz backquote])
 358         (boo t)
 359         (bar t)
 360         (baz t))
 361     (should (equal '("bar" "baz")
 362                    (company-elisp--globals "ba" 'boundp)))))
 363
 364 (ert-deftest company-elisp-finds-functions ()
 365   (let ((obarray [when what whelp])
 366         (what t)
 367         (whelp t))
 368     (should (equal '("when")
 369                    (company-elisp--globals "wh" 'fboundp)))))
 370
 371 (ert-deftest company-elisp-finds-things ()
 372   (let ((obarray [when what whelp])
 373         (what t)
 374         (whelp t))
 375     (should (equal '("what" "whelp" "when")
 376                    (sort (company-elisp--globals "wh" 'company-elisp--predicate)
 377                          'string<)))))
 378
 379 (ert-deftest company-elisp-locals-vars ()
 380   (company-elisp-with-buffer
 381     "(let ((foo 5) (bar 6))
 382        (cl-labels ((borg ()))
 383          (lambda (boo baz)
 384            b|)))"
 385     (should (equal '("bar" "baz" "boo")
 386                    (company-elisp--locals "b" nil)))))
 387
 388 (ert-deftest company-elisp-locals-single-var ()
 389   (company-elisp-with-buffer
 390     "(dotimes (itk 100)
 391        (dolist (item items)
 392          it|))"
 393     (should (equal '("itk" "item")
 394                    (company-elisp--locals "it" nil)))))
 395
 396 (ert-deftest company-elisp-locals-funs ()
 397   (company-elisp-with-buffer
 398     "(cl-labels ((foo ())
 399                  (fee ()))
 400        (let ((fun 4))
 401          (f| )))"
 402     (should (equal '("fee" "foo")
 403                    (sort (company-elisp--locals "f" t) 'string<)))))
 404
 405 (ert-deftest company-elisp-locals-skips-current-varlist ()
 406   (company-elisp-with-buffer
 407     "(let ((foo 1)
 408            (f| )))"
 409     (should (null (company-elisp--locals "f" nil)))))
 410
 411 (ert-deftest company-elisp-show-locals-first ()
 412   (company-elisp-with-buffer
 413     "(let ((floo 1)
 414            (flop 2)
 415            (flee 3))
 416        fl|)"
 417     (let ((obarray [float-pi]))
 418       (let (company-elisp-show-locals-first)
 419         (should (eq nil (company-elisp 'sorted))))
 420       (let ((company-elisp-show-locals-first t))
 421         (should (eq t (company-elisp 'sorted)))
 422         (should (equal '("flee" "floo" "flop" "float-pi")
 423                        (company-elisp-candidates "fl")))))))
 424
 425 (ert-deftest company-elisp-candidates-no-duplicates ()
 426   (company-elisp-with-buffer
 427     "(let ((float-pi 4))
 428        f|)"
 429     (let ((obarray [float-pi])
 430           (company-elisp-show-locals-first t))
 431       (should (equal '("float-pi") (company-elisp-candidates "f"))))))
 432
 433 (ert-deftest company-elisp-shouldnt-complete-defun-name ()
 434   (company-elisp-with-buffer
 435     "(defun foob|)"
 436     (should (null (company-elisp 'prefix)))))
 437
 438 (ert-deftest company-elisp-should-complete-def-call ()
 439   (company-elisp-with-buffer
 440     "(defu|"
 441     (should (equal "defu" (company-elisp 'prefix)))))
 442
 443 (ert-deftest company-elisp-should-complete-in-defvar ()
 444   ;; It will also complete the var name, at least for now.
 445   (company-elisp-with-buffer
 446     "(defvar abc de|"
 447     (should (equal "de" (company-elisp 'prefix)))))
 448
 449 (ert-deftest company-elisp-shouldnt-complete-in-defun-arglist ()
 450   (company-elisp-with-buffer
 451     "(defsubst foobar (ba|"
 452     (should (null (company-elisp 'prefix)))))
 453
 454 (ert-deftest company-elisp-prefix-in-defun-body ()
 455   (company-elisp-with-buffer
 456     "(defun foob ()|)"
 457     (should (equal "" (company-elisp 'prefix)))))
 458
 459 ;;; Clang
 460
 461 (ert-deftest company-clang-objc-templatify ()
 462   (with-temp-buffer
 463     (let ((text "createBookWithTitle:andAuthor:"))
 464       (insert text)
 465       (company-clang-objc-templatify text)
 466       (should (equal "createBookWithTitle:arg0 andAuthor:arg1" (buffer-string)))
 467       (should (looking-at "arg0"))
 468       (should (null (overlay-get (company-template-field-at) 'display))))))