]> code.delx.au - gnu-emacs-elpa/blobdiff - company-tests.el
Test new prefix behavior, option company-abort-manual-when-too-short
[gnu-emacs-elpa] / company-tests.el
index 691e3ae2486ad4793c7a7fb5861b6ffc0cfa00b8..e5fd2f70e4590a092d2d8f86dd5242578569668c 100644 (file)
@@ -1,6 +1,6 @@
 ;;; company-tests.el --- company-mode tests
 
-;; Copyright (C) 2011  Free Software Foundation, Inc.
+;; Copyright (C) 2011, 2013-2014  Free Software Foundation, Inc.
 
 ;; Author: Nikolaj Schumacher
 
 
 ;;; Code:
 
+(eval-when-compile (require 'cl))
 (require 'ert)
 (require 'company)
 (require 'company-keywords)
+(require 'company-elisp)
+(require 'company-clang)
+
+;;; Core
 
 (ert-deftest company-sorted-keywords ()
   "Test that keywords in `company-keywords-alist' are in alphabetical order."
 
 (ert-deftest company-good-prefix ()
   (let ((company-minimum-prefix-length 5)
-        company--explicit-action)
+        company--explicit-action
+        (company-selection-changed t))  ;never enough
     (should (eq t (company--good-prefix-p "!@#$%")))
     (should (eq nil (company--good-prefix-p "abcd")))
     (should (eq nil (company--good-prefix-p 'stop)))
     (should (eq t (company--good-prefix-p '("foo" . 5))))
     (should (eq nil (company--good-prefix-p '("foo" . 4))))))
+
+(ert-deftest company--manual-prefix-set-and-unset ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional arg)
+                   (case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (company-manual-begin)
+      (should (equal "ab" company--manual-prefix))
+      (company-abort)
+      (should (null company--manual-prefix)))))
+
+(ert-deftest company-abort-manual-when-too-short ()
+  (let ((company-minimum-prefix-length 5)
+        (company-abort-manual-when-too-short t)
+        (company-selection-changed t))    ;never enough
+    (let ((company--explicit-action nil)) ;idle begin
+      (should (eq t (company--good-prefix-p "!@#$%")))
+      (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)))))
+    (let ((company--explicit-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 "abcd"))))))
+
+(ert-deftest company-multi-backend-with-lambdas ()
+  (let ((company-backend
+         (list (lambda (command &optional arg &rest ignore)
+                 (case command
+                   (prefix "z")
+                   (candidates '("a" "b"))))
+               (lambda (command &optional arg &rest ignore)
+                 (case command
+                   (prefix "z")
+                   (candidates '("c" "d")))))))
+    (should (equal (company-call-backend 'candidates "z") '("a" "b" "c" "d")))))
+
+(ert-deftest company-multi-backend-remembers-candidate-backend ()
+  (let ((company-backend
+         (list (lambda (command &optional arg &rest ignore)
+                 (case command
+                   (ignore-case nil)
+                   (annotation "1")
+                   (candidates '("a" "c"))
+                   (post-completion "13")))
+               (lambda (command &optional arg &rest ignore)
+                 (case command
+                   (ignore-case t)
+                   (annotation "2")
+                   (candidates '("b" "d"))
+                   (post-completion "42"))))))
+    (let ((candidates (company-calculate-candidates nil)))
+      (should (equal candidates '("a" "b" "c" "d")))
+      (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)))))))
+
+(ert-deftest company-multi-backend-handles-keyword-with ()
+  (let ((primo (lambda (command &optional arg)
+                 (case command
+                   (prefix "a")
+                   (candidates '("abb" "abc" "abd")))))
+        (secundo (lambda (command &optional arg)
+                   (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)
+                   (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)
+                   (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-require-match 'company-explicit-action-p)
+          (company-backends
+           (list (lambda (command &optional arg)
+                   (case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (let ((last-command-event ?e))
+        (company-call 'self-insert-command 1))
+      (should (eq nil 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)
+                   (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)
+                   (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)
+                   (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-backends
+           (list (lambda (command &optional arg)
+                   (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)
+                   (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)
+                   (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)
+                   (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)
+                     (case c (prefix "") (candidates '("a" "b" "c")))))))
+        (let (this-command)
+          (company-call 'complete))
+        (company-call 'open-line 1)
+        (should (eq 2 (overlay-start company-pseudo-tooltip-overlay)))))))
+
+(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))
+        (should (string= (overlay-get ov 'company-after)
+                         "  123 \nc 45  c\nddd\n")))))))
+
+(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))
+        (let ((ov company-preview-overlay))
+          (should (string= (overlay-get ov 'display) "123\n")))))))
+
+(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))
+        (let ((ov company-pseudo-tooltip-overlay))
+          ;; With margins.
+          (should (eq (overlay-get ov 'company-width) 8))
+          (should (string= (overlay-get ov 'company-after)
+                           " 123(4) \n 45     \n")))))))
+
+(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))
+        (let ((ov company-pseudo-tooltip-overlay))
+          ;; With margins.
+          (should (eq (overlay-get ov 'company-width) 13))
+          (should (string= (overlay-get ov 'company-after)
+                           " 123     (4) \n 45          \n 67 (891011) \n")))))))
+
+(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))))))
+
+(ert-deftest company-column-with-composition ()
+  (with-temp-buffer
+    (insert "lambda ()")
+    (compose-region 1 (1+ (length "lambda")) "\\")
+    (should (= (company--column) 4))))
+
+(ert-deftest company-column-with-line-prefix ()
+  (with-temp-buffer
+    (insert "foo")
+    (put-text-property (point-min) (point) 'line-prefix "  ")
+    (should (= (company--column) 5))))
+
+(ert-deftest company-column-wth-line-prefix-on-empty-line ()
+  (with-temp-buffer
+    (insert "\n")
+    (forward-char -1)
+    (put-text-property (point-min) (point-max) 'line-prefix "  ")
+    (should (= (company--column) 2))))
+
+(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")))
+
+(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))))
+
+;;; 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")))))
+
+;;; Elisp
+
+(defmacro company-elisp-with-buffer (contents &rest body)
+  (declare (indent 0))
+  `(with-temp-buffer
+     (insert ,contents)
+     (setq major-mode 'emacs-lisp-mode)
+     (re-search-backward "|")
+     (replace-match "")
+     (let ((company-elisp-detect-function-context t))
+       ,@body)))
+
+(ert-deftest company-elisp-candidates-predicate ()
+  (company-elisp-with-buffer
+    "(foo ba|)"
+    (should (eq (company-elisp--candidates-predicate "ba")
+                'boundp))
+    (should (eq (let (company-elisp-detect-function-context)
+                  (company-elisp--candidates-predicate "ba"))
+                'company-elisp--predicate)))
+  (company-elisp-with-buffer
+    "(foo| )"
+    (should (eq (company-elisp--candidates-predicate "foo")
+                'fboundp))
+    (should (eq (let (company-elisp-detect-function-context)
+                  (company-elisp--candidates-predicate "foo"))
+                'company-elisp--predicate)))
+  (company-elisp-with-buffer
+    "(foo 'b|)"
+    (should (eq (company-elisp--candidates-predicate "b")
+                'company-elisp--predicate))))
+
+(ert-deftest company-elisp-candidates-predicate-in-docstring ()
+  (company-elisp-with-buffer
+   "(def foo () \"Doo be doo `ide|"
+   (should (eq 'company-elisp--predicate
+               (company-elisp--candidates-predicate "ide")))))
+
+;; This one's also an integration test.
+(ert-deftest company-elisp-candidates-recognizes-binding-form ()
+  (let ((company-elisp-detect-function-context t)
+        (obarray [when what whelp])
+        (what 1)
+        (whelp 2)
+        (wisp 3))
+    (company-elisp-with-buffer
+      "(let ((foo 7) (wh| )))"
+      (should (equal '("what" "whelp")
+                     (company-elisp-candidates "wh"))))
+    (company-elisp-with-buffer
+      "(cond ((null nil) (wh| )))"
+      (should (equal '("when")
+                     (company-elisp-candidates "wh"))))))
+
+(ert-deftest company-elisp-candidates-predicate-binding-without-value ()
+  (loop for (text prefix predicate) in '(("(let (foo|" "foo" boundp)
+                                         ("(let (foo (bar|" "bar" boundp)
+                                         ("(let (foo) (bar|" "bar" fboundp))
+        do
+        (eval `(company-elisp-with-buffer
+                 ,text
+                 (should (eq ',predicate
+                             (company-elisp--candidates-predicate ,prefix)))))))
+
+(ert-deftest company-elisp-finds-vars ()
+  (let ((obarray [boo bar baz backquote])
+        (boo t)
+        (bar t)
+        (baz t))
+    (should (equal '("bar" "baz")
+                   (company-elisp--globals "ba" 'boundp)))))
+
+(ert-deftest company-elisp-finds-functions ()
+  (let ((obarray [when what whelp])
+        (what t)
+        (whelp t))
+    (should (equal '("when")
+                   (company-elisp--globals "wh" 'fboundp)))))
+
+(ert-deftest company-elisp-finds-things ()
+  (let ((obarray [when what whelp])
+        (what t)
+        (whelp t))
+    (should (equal '("what" "whelp" "when")
+                   (sort (company-elisp--globals "wh" 'company-elisp--predicate)
+                         'string<)))))
+
+(ert-deftest company-elisp-locals-vars ()
+  (company-elisp-with-buffer
+    "(let ((foo 5) (bar 6))
+       (cl-labels ((borg ()))
+         (lambda (boo baz)
+           b|)))"
+    (should (equal '("bar" "baz" "boo")
+                   (company-elisp--locals "b" nil)))))
+
+(ert-deftest company-elisp-locals-single-var ()
+  (company-elisp-with-buffer
+    "(dotimes (itk 100)
+       (dolist (item items)
+         it|))"
+    (should (equal '("itk" "item")
+                   (company-elisp--locals "it" nil)))))
+
+(ert-deftest company-elisp-locals-funs ()
+  (company-elisp-with-buffer
+    "(cl-labels ((foo ())
+                 (fee ()))
+       (let ((fun 4))
+         (f| )))"
+    (should (equal '("fee" "foo")
+                   (sort (company-elisp--locals "f" t) 'string<)))))
+
+(ert-deftest company-elisp-locals-skips-current-varlist ()
+  (company-elisp-with-buffer
+    "(let ((foo 1)
+           (f| )))"
+    (should (null (company-elisp--locals "f" nil)))))
+
+(ert-deftest company-elisp-show-locals-first ()
+  (company-elisp-with-buffer
+    "(let ((floo 1)
+           (flop 2)
+           (flee 3))
+       fl|)"
+    (let ((obarray [float-pi]))
+      (let (company-elisp-show-locals-first)
+        (should (eq nil (company-elisp 'sorted))))
+      (let ((company-elisp-show-locals-first t))
+        (should (eq t (company-elisp 'sorted)))
+        (should (equal '("flee" "floo" "flop" "float-pi")
+                       (company-elisp-candidates "fl")))))))
+
+(ert-deftest company-elisp-candidates-no-duplicates ()
+  (company-elisp-with-buffer
+    "(let ((float-pi 4))
+       f|)"
+    (let ((obarray [float-pi])
+          (company-elisp-show-locals-first t))
+      (should (equal '("float-pi") (company-elisp-candidates "f"))))))
+
+(ert-deftest company-elisp-shouldnt-complete-defun-name ()
+  (company-elisp-with-buffer
+    "(defun foob|)"
+    (should (null (company-elisp 'prefix)))))
+
+(ert-deftest company-elisp-should-complete-def-call ()
+  (company-elisp-with-buffer
+    "(defu|"
+    (should (equal "defu" (company-elisp 'prefix)))))
+
+(ert-deftest company-elisp-should-complete-in-defvar ()
+  ;; It will also complete the var name, at least for now.
+  (company-elisp-with-buffer
+    "(defvar abc de|"
+    (should (equal "de" (company-elisp 'prefix)))))
+
+(ert-deftest company-elisp-shouldnt-complete-in-defun-arglist ()
+  (company-elisp-with-buffer
+    "(defsubst foobar (ba|"
+    (should (null (company-elisp 'prefix)))))
+
+(ert-deftest company-elisp-prefix-in-defun-body ()
+  (company-elisp-with-buffer
+    "(defun foob ()|)"
+    (should (equal "" (company-elisp 'prefix)))))
+
+;;; 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))))))