test/lisp/emacs-lisp/ert-tests.el

   1 ;;; ert-tests.el --- ERT's self-tests  -*- lexical-binding: t -*-
   2
   3 ;; Copyright (C) 2007-2008, 2010-2018 Free Software Foundation, Inc.
   4
   5 ;; Author: Christian Ohler <ohler@gnu.org>
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; This program is free software: you can redistribute it and/or
  10 ;; modify it under the terms of the GNU General Public License as
  11 ;; published by the Free Software Foundation, either version 3 of the
  12 ;; License, or (at your option) any later version.
  13 ;;
  14 ;; This program is distributed in the hope that it will be useful, but
  15 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17 ;; General Public License for more details.
  18 ;;
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with this program.  If not, see `https://www.gnu.org/licenses/'.
  21
  22 ;;; Commentary:
  23
  24 ;; This file is part of ERT, the Emacs Lisp Regression Testing tool.
  25 ;; See ert.el or the texinfo manual for more details.
  26
  27 ;;; Code:
  28
  29 (require 'cl-lib)
  30 (require 'ert)
  31
  32 ;;; Self-test that doesn't rely on ERT, for bootstrapping.
  33
  34 ;; This is used to test that bodies actually run.
  35 (defvar ert--test-body-was-run)
  36 (ert-deftest ert-test-body-runs ()
  37   (setq ert--test-body-was-run t))
  38
  39 (defun ert-self-test ()
  40   "Run ERT's self-tests and make sure they actually ran."
  41   (let ((window-configuration (current-window-configuration)))
  42     (let ((ert--test-body-was-run nil))
  43       ;; The buffer name chosen here should not compete with the default
  44       ;; results buffer name for completion in `switch-to-buffer'.
  45       (let ((stats (ert-run-tests-interactively "^ert-" " *ert self-tests*")))
  46         (cl-assert ert--test-body-was-run)
  47         (if (zerop (ert-stats-completed-unexpected stats))
  48             ;; Hide results window only when everything went well.
  49             (set-window-configuration window-configuration)
  50           (error "ERT self-test failed"))))))
  51
  52 (defun ert-self-test-and-exit ()
  53   "Run ERT's self-tests and exit Emacs.
  54
  55 The exit code will be zero if the tests passed, nonzero if they
  56 failed or if there was a problem."
  57   (unwind-protect
  58       (progn
  59         (ert-self-test)
  60         (kill-emacs 0))
  61     (unwind-protect
  62         (progn
  63           (message "Error running tests")
  64           (backtrace))
  65       (kill-emacs 1))))
  66
  67
  68 ;;; Further tests are defined using ERT.
  69
  70 (ert-deftest ert-test-nested-test-body-runs ()
  71   "Test that nested test bodies run."
  72   (let ((was-run nil))
  73     (let ((test (make-ert-test :body (lambda ()
  74                                        (setq was-run t)))))
  75       (cl-assert (not was-run))
  76       (ert-run-test test)
  77       (cl-assert was-run))))
  78
  79
  80 ;;; Test that pass/fail works.
  81 (ert-deftest ert-test-pass ()
  82   (let ((test (make-ert-test :body (lambda ()))))
  83     (let ((result (ert-run-test test)))
  84       (cl-assert (ert-test-passed-p result)))))
  85
  86 (ert-deftest ert-test-fail ()
  87   (let ((test (make-ert-test :body (lambda () (ert-fail "failure message")))))
  88     (let ((result (let ((ert-debug-on-error nil))
  89                     (ert-run-test test))))
  90       (cl-assert (ert-test-failed-p result) t)
  91       (cl-assert (equal (ert-test-result-with-condition-condition result)
  92                      '(ert-test-failed "failure message"))
  93               t))))
  94
  95 (ert-deftest ert-test-fail-debug-with-condition-case ()
  96   (let ((test (make-ert-test :body (lambda () (ert-fail "failure message")))))
  97     (condition-case condition
  98         (progn
  99           (let ((ert-debug-on-error t))
 100             (ert-run-test test))
 101           (cl-assert nil))
 102       ((error)
 103        (cl-assert (equal condition '(ert-test-failed "failure message")) t)))))
 104
 105 (ert-deftest ert-test-fail-debug-with-debugger-1 ()
 106   (let ((test (make-ert-test :body (lambda () (ert-fail "failure message")))))
 107     (let ((debugger (lambda (&rest _args)
 108                       (cl-assert nil))))
 109       (let ((ert-debug-on-error nil))
 110         (ert-run-test test)))))
 111
 112 (ert-deftest ert-test-fail-debug-with-debugger-2 ()
 113   (let ((test (make-ert-test :body (lambda () (ert-fail "failure message")))))
 114     (cl-block nil
 115       (let ((debugger (lambda (&rest _args)
 116                         (cl-return-from nil nil))))
 117         (let ((ert-debug-on-error t))
 118           (ert-run-test test))
 119         (cl-assert nil)))))
 120
 121 (ert-deftest ert-test-fail-debug-nested-with-debugger ()
 122   (let ((test (make-ert-test :body (lambda ()
 123                                      (let ((ert-debug-on-error t))
 124                                        (ert-fail "failure message"))))))
 125     (let ((debugger (lambda (&rest _args)
 126                       (cl-assert nil nil "Assertion a"))))
 127       (let ((ert-debug-on-error nil))
 128         (ert-run-test test))))
 129   (let ((test (make-ert-test :body (lambda ()
 130                                      (let ((ert-debug-on-error nil))
 131                                        (ert-fail "failure message"))))))
 132     (cl-block nil
 133       (let ((debugger (lambda (&rest _args)
 134                         (cl-return-from nil nil))))
 135         (let ((ert-debug-on-error t))
 136           (ert-run-test test))
 137         (cl-assert nil nil "Assertion b")))))
 138
 139 (ert-deftest ert-test-error ()
 140   (let ((test (make-ert-test :body (lambda () (error "Error message")))))
 141     (let ((result (let ((ert-debug-on-error nil))
 142                     (ert-run-test test))))
 143       (cl-assert (ert-test-failed-p result) t)
 144       (cl-assert (equal (ert-test-result-with-condition-condition result)
 145                      '(error "Error message"))
 146               t))))
 147
 148 (ert-deftest ert-test-error-debug ()
 149   (let ((test (make-ert-test :body (lambda () (error "Error message")))))
 150     (condition-case condition
 151         (progn
 152           (let ((ert-debug-on-error t))
 153             (ert-run-test test))
 154           (cl-assert nil))
 155       ((error)
 156        (cl-assert (equal condition '(error "Error message")) t)))))
 157
 158
 159 ;;; Test that `should' works.
 160 (ert-deftest ert-test-should ()
 161   (let ((test (make-ert-test :body (lambda () (should nil)))))
 162     (let ((result (let ((ert-debug-on-error nil))
 163                     (ert-run-test test))))
 164       (cl-assert (ert-test-failed-p result) t)
 165       (cl-assert (equal (ert-test-result-with-condition-condition result)
 166                      '(ert-test-failed ((should nil) :form nil :value nil)))
 167               t)))
 168   (let ((test (make-ert-test :body (lambda () (should t)))))
 169     (let ((result (ert-run-test test)))
 170       (cl-assert (ert-test-passed-p result) t))))
 171
 172 (ert-deftest ert-test-should-value ()
 173   (should (eql (should 'foo) 'foo))
 174   (should (eql (should 'bar) 'bar)))
 175
 176 (ert-deftest ert-test-should-not ()
 177   (let ((test (make-ert-test :body (lambda () (should-not t)))))
 178     (let ((result (let ((ert-debug-on-error nil))
 179                     (ert-run-test test))))
 180       (cl-assert (ert-test-failed-p result) t)
 181       (cl-assert (equal (ert-test-result-with-condition-condition result)
 182                      '(ert-test-failed ((should-not t) :form t :value t)))
 183               t)))
 184   (let ((test (make-ert-test :body (lambda () (should-not nil)))))
 185     (let ((result (ert-run-test test)))
 186       (cl-assert (ert-test-passed-p result)))))
 187
 188
 189 (ert-deftest ert-test-should-with-macrolet ()
 190   (let ((test (make-ert-test :body (lambda ()
 191                                      (cl-macrolet ((foo () `(progn t nil)))
 192                                        (should (foo)))))))
 193     (let ((result (let ((ert-debug-on-error nil))
 194                     (ert-run-test test))))
 195       (should (ert-test-failed-p result))
 196       (should (equal
 197                (ert-test-result-with-condition-condition result)
 198                '(ert-test-failed ((should (foo))
 199                                   :form (progn t nil)
 200                                   :value nil)))))))
 201
 202 (ert-deftest ert-test-should-error ()
 203   ;; No error.
 204   (let ((test (make-ert-test :body (lambda () (should-error (progn))))))
 205     (let ((result (let ((ert-debug-on-error nil))
 206                     (ert-run-test test))))
 207       (should (ert-test-failed-p result))
 208       (should (equal (ert-test-result-with-condition-condition result)
 209                      '(ert-test-failed
 210                        ((should-error (progn))
 211                         :form (progn)
 212                         :value nil
 213                         :fail-reason "did not signal an error"))))))
 214   ;; A simple error.
 215   (should (equal (should-error (error "Foo"))
 216                  '(error "Foo")))
 217   ;; Error of unexpected type.
 218   (let ((test (make-ert-test :body (lambda ()
 219                                      (should-error (error "Foo")
 220                                                    :type 'singularity-error)))))
 221     (let ((result (ert-run-test test)))
 222       (should (ert-test-failed-p result))
 223       (should (equal
 224                (ert-test-result-with-condition-condition result)
 225                '(ert-test-failed
 226                  ((should-error (error "Foo") :type 'singularity-error)
 227                   :form (error "Foo")
 228                   :condition (error "Foo")
 229                   :fail-reason
 230                   "the error signaled did not have the expected type"))))))
 231   ;; Error of the expected type.
 232   (let* ((error nil)
 233          (test (make-ert-test
 234                 :body (lambda ()
 235                         (setq error
 236                               (should-error (signal 'singularity-error nil)
 237                                             :type 'singularity-error))))))
 238     (let ((result (ert-run-test test)))
 239       (should (ert-test-passed-p result))
 240       (should (equal error '(singularity-error))))))
 241
 242 (ert-deftest ert-test-should-error-subtypes ()
 243   (should-error (signal 'singularity-error nil)
 244                 :type 'singularity-error
 245                 :exclude-subtypes t)
 246   (let ((test (make-ert-test
 247                :body (lambda ()
 248                        (should-error (signal 'arith-error nil)
 249                                      :type 'singularity-error)))))
 250     (let ((result (ert-run-test test)))
 251       (should (ert-test-failed-p result))
 252       (should (equal
 253                (ert-test-result-with-condition-condition result)
 254                '(ert-test-failed
 255                  ((should-error (signal 'arith-error nil)
 256                                 :type 'singularity-error)
 257                   :form (signal arith-error nil)
 258                   :condition (arith-error)
 259                   :fail-reason
 260                   "the error signaled did not have the expected type"))))))
 261   (let ((test (make-ert-test
 262                :body (lambda ()
 263                        (should-error (signal 'arith-error nil)
 264                                      :type 'singularity-error
 265                                      :exclude-subtypes t)))))
 266     (let ((result (ert-run-test test)))
 267       (should (ert-test-failed-p result))
 268       (should (equal
 269                (ert-test-result-with-condition-condition result)
 270                '(ert-test-failed
 271                  ((should-error (signal 'arith-error nil)
 272                                 :type 'singularity-error
 273                                 :exclude-subtypes t)
 274                   :form (signal arith-error nil)
 275                   :condition (arith-error)
 276                   :fail-reason
 277                   "the error signaled did not have the expected type"))))))
 278   (let ((test (make-ert-test
 279                :body (lambda ()
 280                        (should-error (signal 'singularity-error nil)
 281                                      :type 'arith-error
 282                                      :exclude-subtypes t)))))
 283     (let ((result (ert-run-test test)))
 284       (should (ert-test-failed-p result))
 285       (should (equal
 286                (ert-test-result-with-condition-condition result)
 287                '(ert-test-failed
 288                  ((should-error (signal 'singularity-error nil)
 289                                 :type 'arith-error
 290                                 :exclude-subtypes t)
 291                   :form (signal singularity-error nil)
 292                   :condition (singularity-error)
 293                   :fail-reason
 294                   "the error signaled was a subtype of the expected type")))))
 295     ))
 296
 297 (ert-deftest ert-test-should-error-argument ()
 298   "Errors due to evaluating arguments should not break tests."
 299   (should-error (identity (/ 1 0))))
 300
 301 (ert-deftest ert-test-should-error-macroexpansion ()
 302   "Errors due to expanding macros should not break tests."
 303   (cl-macrolet ((test () (error "Foo")))
 304     (should-error (test))))
 305
 306 (ert-deftest ert-test-skip-unless ()
 307   ;; Don't skip.
 308   (let ((test (make-ert-test :body (lambda () (skip-unless t)))))
 309     (let ((result (ert-run-test test)))
 310       (should (ert-test-passed-p result))))
 311   ;; Skip.
 312   (let ((test (make-ert-test :body (lambda () (skip-unless nil)))))
 313     (let ((result (ert-run-test test)))
 314       (should (ert-test-skipped-p result))))
 315   ;; Skip in case of error.
 316   (let ((test (make-ert-test :body (lambda () (skip-unless (error "Foo"))))))
 317     (let ((result (ert-run-test test)))
 318       (should (ert-test-skipped-p result)))))
 319
 320 (defmacro ert--test-my-list (&rest args)
 321   "Don't use this.  Instead, call `list' with ARGS, it does the same thing.
 322
 323 This macro is used to test if macroexpansion in `should' works."
 324   `(list ,@args))
 325
 326 (ert-deftest ert-test-should-failure-debugging ()
 327   "Test that `should' errors contain the information we expect them to."
 328   (cl-loop
 329    for (body expected-condition) in
 330    `((,(lambda () (let ((x nil)) (should x)))
 331       (ert-test-failed ((should x) :form x :value nil)))
 332      (,(lambda () (let ((x t)) (should-not x)))
 333       (ert-test-failed ((should-not x) :form x :value t)))
 334      (,(lambda () (let ((x t)) (should (not x))))
 335       (ert-test-failed ((should (not x)) :form (not t) :value nil)))
 336      (,(lambda () (let ((x nil)) (should-not (not x))))
 337       (ert-test-failed ((should-not (not x)) :form (not nil) :value t)))
 338      (,(lambda () (let ((x t) (y nil)) (should-not
 339                                    (ert--test-my-list x y))))
 340       (ert-test-failed
 341        ((should-not (ert--test-my-list x y))
 342         :form (list t nil)
 343         :value (t nil))))
 344      (,(lambda () (let ((_x t)) (should (error "Foo"))))
 345       (error "Foo")))
 346    do
 347    (let ((test (make-ert-test :body body)))
 348      (condition-case actual-condition
 349          (progn
 350            (let ((ert-debug-on-error t))
 351              (ert-run-test test))
 352            (cl-assert nil))
 353        ((error)
 354         (should (equal actual-condition expected-condition)))))))
 355
 356 (defun ert-test--which-file ()
 357   "Dummy function to help test `symbol-file' for tests.")
 358
 359 (ert-deftest ert-test-deftest ()
 360   (ert-deftest ert-test-abc () "foo" :tags '(bar))
 361   (let ((abc (ert-get-test 'ert-test-abc)))
 362     (should (equal (ert-test-tags abc) '(bar)))
 363     (should (equal (ert-test-documentation abc) "foo")))
 364   (should (equal (symbol-file 'ert-test-deftest 'ert--test)
 365                  (symbol-file 'ert-test--which-file 'defun)))
 366
 367   (ert-deftest ert-test-def () :expected-result ':passed)
 368   (let ((def (ert-get-test 'ert-test-def)))
 369     (should (equal (ert-test-expected-result-type def) :passed)))
 370   ;; :documentation keyword is forbidden
 371   (should-error (macroexpand '(ert-deftest ghi ()
 372                                 :documentation "foo"))))
 373
 374 (ert-deftest ert-test-record-backtrace ()
 375   (let* ((test-body (lambda () (ert-fail "foo")))
 376          (test (make-ert-test :body test-body))
 377          (result (ert-run-test test)))
 378     (should (ert-test-failed-p result))
 379     (should (eq (nth 1 (car (ert-test-failed-backtrace result)))
 380                 'signal))))
 381
 382 (ert-deftest ert-test-messages ()
 383   :tags '(:causes-redisplay)
 384   (let* ((message-string "Test message")
 385          (messages-buffer (get-buffer-create "*Messages*"))
 386          (test (make-ert-test :body (lambda () (message "%s" message-string)))))
 387     (with-current-buffer messages-buffer
 388       (let ((result (ert-run-test test)))
 389         (should (equal (concat message-string "\n")
 390                        (ert-test-result-messages result)))))))
 391
 392 (ert-deftest ert-test-running-tests ()
 393   (let ((outer-test (ert-get-test 'ert-test-running-tests)))
 394     (should (equal (ert-running-test) outer-test))
 395     (let (test1 test2 test3)
 396       (setq test1 (make-ert-test
 397                    :name "1"
 398                    :body (lambda ()
 399                            (should (equal (ert-running-test) outer-test))
 400                            (should (equal ert--running-tests
 401                                           (list test1 test2 test3
 402                                                 outer-test)))))
 403             test2 (make-ert-test
 404                    :name "2"
 405                    :body (lambda ()
 406                            (should (equal (ert-running-test) outer-test))
 407                            (should (equal ert--running-tests
 408                                           (list test3 test2 outer-test)))
 409                            (ert-run-test test1)))
 410             test3 (make-ert-test
 411                    :name "3"
 412                    :body (lambda ()
 413                            (should (equal (ert-running-test) outer-test))
 414                            (should (equal ert--running-tests
 415                                           (list test3 outer-test)))
 416                            (ert-run-test test2))))
 417       (should (ert-test-passed-p (ert-run-test test3))))))
 418
 419 (ert-deftest ert-test-test-result-expected-p ()
 420   "Test `ert-test-result-expected-p' and (implicitly) `ert-test-result-type-p'."
 421   ;; passing test
 422   (let ((test (make-ert-test :body (lambda ()))))
 423     (should (ert-test-result-expected-p test (ert-run-test test))))
 424   ;; unexpected failure
 425   (let ((test (make-ert-test :body (lambda () (ert-fail "failed")))))
 426     (should-not (ert-test-result-expected-p test (ert-run-test test))))
 427   ;; expected failure
 428   (let ((test (make-ert-test :body (lambda () (ert-fail "failed"))
 429                              :expected-result-type ':failed)))
 430     (should (ert-test-result-expected-p test (ert-run-test test))))
 431   ;; `not' expected type
 432   (let ((test (make-ert-test :body (lambda ())
 433                              :expected-result-type '(not :failed))))
 434     (should (ert-test-result-expected-p test (ert-run-test test))))
 435   (let ((test (make-ert-test :body (lambda ())
 436                              :expected-result-type '(not :passed))))
 437     (should-not (ert-test-result-expected-p test (ert-run-test test))))
 438   ;; `and' expected type
 439   (let ((test (make-ert-test :body (lambda ())
 440                              :expected-result-type '(and :passed :failed))))
 441     (should-not (ert-test-result-expected-p test (ert-run-test test))))
 442   (let ((test (make-ert-test :body (lambda ())
 443                              :expected-result-type '(and :passed
 444                                                          (not :failed)))))
 445     (should (ert-test-result-expected-p test (ert-run-test test))))
 446   ;; `or' expected type
 447   (let ((test (make-ert-test :body (lambda ())
 448                              :expected-result-type '(or (and :passed :failed)
 449                                                         :passed))))
 450     (should (ert-test-result-expected-p test (ert-run-test test))))
 451   (let ((test (make-ert-test :body (lambda ())
 452                              :expected-result-type '(or (and :passed :failed)
 453                                                         nil (not t)))))
 454     (should-not (ert-test-result-expected-p test (ert-run-test test)))))
 455
 456 ;;; Test `ert-select-tests'.
 457 (ert-deftest ert-test-select-regexp ()
 458   (should (equal (ert-select-tests "^ert-test-select-regexp$" t)
 459                  (list (ert-get-test 'ert-test-select-regexp)))))
 460
 461 (ert-deftest ert-test-test-boundp ()
 462   (should (ert-test-boundp 'ert-test-test-boundp))
 463   (should-not (ert-test-boundp (make-symbol "ert-not-a-test"))))
 464
 465 (ert-deftest ert-test-select-member ()
 466   (should (equal (ert-select-tests '(member ert-test-select-member) t)
 467                  (list (ert-get-test 'ert-test-select-member)))))
 468
 469 (ert-deftest ert-test-select-test ()
 470   (should (equal (ert-select-tests (ert-get-test 'ert-test-select-test) t)
 471                  (list (ert-get-test 'ert-test-select-test)))))
 472
 473 (ert-deftest ert-test-select-symbol ()
 474   (should (equal (ert-select-tests 'ert-test-select-symbol t)
 475                  (list (ert-get-test 'ert-test-select-symbol)))))
 476
 477 (ert-deftest ert-test-select-and ()
 478   (let ((test (make-ert-test
 479                :name nil
 480                :body nil
 481                :most-recent-result (make-ert-test-failed
 482                                     :condition nil
 483                                     :backtrace nil
 484                                     :infos nil))))
 485     (should (equal (ert-select-tests `(and (member ,test) :failed) t)
 486                    (list test)))))
 487
 488 (ert-deftest ert-test-select-tag ()
 489   (let ((test (make-ert-test
 490                :name nil
 491                :body nil
 492                :tags '(a b))))
 493     (should (equal (ert-select-tests `(tag a) (list test)) (list test)))
 494     (should (equal (ert-select-tests `(tag b) (list test)) (list test)))
 495     (should (equal (ert-select-tests `(tag c) (list test)) '()))))
 496
 497
 498 ;;; Tests for utility functions.
 499 (ert-deftest ert-test-proper-list-p ()
 500   (should (ert--proper-list-p '()))
 501   (should (ert--proper-list-p '(1)))
 502   (should (ert--proper-list-p '(1 2)))
 503   (should (ert--proper-list-p '(1 2 3)))
 504   (should (ert--proper-list-p '(1 2 3 4)))
 505   (should (not (ert--proper-list-p 'a)))
 506   (should (not (ert--proper-list-p '(1 . a))))
 507   (should (not (ert--proper-list-p '(1 2 . a))))
 508   (should (not (ert--proper-list-p '(1 2 3 . a))))
 509   (should (not (ert--proper-list-p '(1 2 3 4 . a))))
 510   (let ((a (list 1)))
 511     (setf (cdr (last a)) a)
 512     (should (not (ert--proper-list-p a))))
 513   (let ((a (list 1 2)))
 514     (setf (cdr (last a)) a)
 515     (should (not (ert--proper-list-p a))))
 516   (let ((a (list 1 2 3)))
 517     (setf (cdr (last a)) a)
 518     (should (not (ert--proper-list-p a))))
 519   (let ((a (list 1 2 3 4)))
 520     (setf (cdr (last a)) a)
 521     (should (not (ert--proper-list-p a))))
 522   (let ((a (list 1 2)))
 523     (setf (cdr (last a)) (cdr a))
 524     (should (not (ert--proper-list-p a))))
 525   (let ((a (list 1 2 3)))
 526     (setf (cdr (last a)) (cdr a))
 527     (should (not (ert--proper-list-p a))))
 528   (let ((a (list 1 2 3 4)))
 529     (setf (cdr (last a)) (cdr a))
 530     (should (not (ert--proper-list-p a))))
 531   (let ((a (list 1 2 3)))
 532     (setf (cdr (last a)) (cddr a))
 533     (should (not (ert--proper-list-p a))))
 534   (let ((a (list 1 2 3 4)))
 535     (setf (cdr (last a)) (cddr a))
 536     (should (not (ert--proper-list-p a))))
 537   (let ((a (list 1 2 3 4)))
 538     (setf (cdr (last a)) (cl-cdddr a))
 539     (should (not (ert--proper-list-p a)))))
 540
 541 (ert-deftest ert-test-parse-keys-and-body ()
 542   (should (equal (ert--parse-keys-and-body '(foo)) '(nil (foo))))
 543   (should (equal (ert--parse-keys-and-body '(:bar foo)) '((:bar foo) nil)))
 544   (should (equal (ert--parse-keys-and-body '(:bar foo a (b)))
 545                  '((:bar foo) (a (b)))))
 546   (should (equal (ert--parse-keys-and-body '(:bar foo :a (b)))
 547                  '((:bar foo :a (b)) nil)))
 548   (should (equal (ert--parse-keys-and-body '(bar foo :a (b)))
 549                  '(nil (bar foo :a (b)))))
 550   (should-error (ert--parse-keys-and-body '(:bar foo :a))))
 551
 552
 553 (ert-deftest ert-test-run-tests-interactively ()
 554   :tags '(:causes-redisplay)
 555   (let ((passing-test (make-ert-test :name 'passing-test
 556                                      :body (lambda () (ert-pass))))
 557         (failing-test (make-ert-test :name 'failing-test
 558                                      :body (lambda () (ert-fail
 559                                                        "failure message"))))
 560         (skipped-test (make-ert-test :name 'skipped-test
 561                                      :body (lambda () (ert-skip
 562                                                        "skip message")))))
 563     (let ((ert-debug-on-error nil))
 564       (let* ((buffer-name (generate-new-buffer-name " *ert-test-run-tests*"))
 565              (messages nil)
 566              (mock-message-fn
 567               (lambda (format-string &rest args)
 568                 (push (apply #'format format-string args) messages))))
 569         (save-window-excursion
 570           (unwind-protect
 571               (let ((case-fold-search nil))
 572                 (ert-run-tests-interactively
 573                  `(member ,passing-test ,failing-test, skipped-test) buffer-name
 574                  mock-message-fn)
 575                 (should (equal messages `(,(concat
 576                                             "Ran 3 tests, 1 results were "
 577                                             "as expected, 1 unexpected, "
 578                                             "1 skipped"))))
 579                 (with-current-buffer buffer-name
 580                   (goto-char (point-min))
 581                   (should (equal
 582                            (buffer-substring (point-min)
 583                                              (save-excursion
 584                                                (forward-line 5)
 585                                                (point)))
 586                            (concat
 587                             "Selector: (member <passing-test> <failing-test> "
 588                             "<skipped-test>)\n"
 589                             "Passed:  1\n"
 590                             "Failed:  1 (1 unexpected)\n"
 591                             "Skipped: 1\n"
 592                             "Total:   3/3\n")))))
 593             (when (get-buffer buffer-name)
 594               (kill-buffer buffer-name))))))))
 595
 596 (ert-deftest ert-test-special-operator-p ()
 597   (should (ert--special-operator-p 'if))
 598   (should-not (ert--special-operator-p 'car))
 599   (should-not (ert--special-operator-p 'ert--special-operator-p))
 600   (let ((b (cl-gensym)))
 601     (should-not (ert--special-operator-p b))
 602     (fset b 'if)
 603     (should (ert--special-operator-p b))))
 604
 605 (ert-deftest ert-test-list-of-should-forms ()
 606   (let ((test (make-ert-test :body (lambda ()
 607                                      (should t)
 608                                      (should (null '()))
 609                                      (should nil)
 610                                      (should t)))))
 611     (let ((result (let ((ert-debug-on-error nil))
 612                     (ert-run-test test))))
 613       (should (equal (ert-test-result-should-forms result)
 614                      '(((should t) :form t :value t)
 615                        ((should (null '())) :form (null nil) :value t)
 616                        ((should nil) :form nil :value nil)))))))
 617
 618 (ert-deftest ert-test-list-of-should-forms-observers-should-not-stack ()
 619   (let ((test (make-ert-test
 620                :body (lambda ()
 621                        (let ((test2 (make-ert-test
 622                                      :body (lambda ()
 623                                              (should t)))))
 624                          (let ((result (ert-run-test test2)))
 625                            (should (ert-test-passed-p result))))))))
 626     (let ((result (let ((ert-debug-on-error nil))
 627                     (ert-run-test test))))
 628       (should (ert-test-passed-p result))
 629       (should (eql (length (ert-test-result-should-forms result))
 630                    1)))))
 631
 632 (ert-deftest ert-test-list-of-should-forms-no-deep-copy ()
 633   (let ((test (make-ert-test :body (lambda ()
 634                                      (let ((obj (list 'a)))
 635                                        (should (equal obj '(a)))
 636                                        (setf (car obj) 'b)
 637                                        (should (equal obj '(b))))))))
 638     (let ((result (let ((ert-debug-on-error nil))
 639                     (ert-run-test test))))
 640       (should (ert-test-passed-p result))
 641       (should (equal (ert-test-result-should-forms result)
 642                      '(((should (equal obj '(a))) :form (equal (b) (a)) :value t
 643                         :explanation nil)
 644                        ((should (equal obj '(b))) :form (equal (b) (b)) :value t
 645                         :explanation nil)
 646                        ))))))
 647
 648 (ert-deftest ert-test-string-first-line ()
 649   (should (equal (ert--string-first-line "") ""))
 650   (should (equal (ert--string-first-line "abc") "abc"))
 651   (should (equal (ert--string-first-line "abc\n") "abc"))
 652   (should (equal (ert--string-first-line "foo\nbar") "foo"))
 653   (should (equal (ert--string-first-line " foo\nbar\nbaz\n") " foo")))
 654
 655 (ert-deftest ert-test-explain-equal ()
 656   (should (equal (ert--explain-equal nil 'foo)
 657                  '(different-atoms nil foo)))
 658   (should (equal (ert--explain-equal '(a a) '(a b))
 659                  '(list-elt 1 (different-atoms a b))))
 660   (should (equal (ert--explain-equal '(1 48) '(1 49))
 661                  '(list-elt 1 (different-atoms (48 "#x30" "?0")
 662                                                (49 "#x31" "?1")))))
 663   (should (equal (ert--explain-equal 'nil '(a))
 664                  '(different-types nil (a))))
 665   (should (equal (ert--explain-equal '(a b c) '(a b c d))
 666                  '(proper-lists-of-different-length 3 4 (a b c) (a b c d)
 667                                                     first-mismatch-at 3)))
 668   (let ((sym (make-symbol "a")))
 669     (should (equal (ert--explain-equal 'a sym)
 670                    `(different-symbols-with-the-same-name a ,sym)))))
 671
 672 (ert-deftest ert-test-explain-equal-improper-list ()
 673   (should (equal (ert--explain-equal '(a . b) '(a . c))
 674                  '(cdr (different-atoms b c)))))
 675
 676 (ert-deftest ert-test-explain-equal-keymaps ()
 677   ;; This used to be very slow.
 678   (should (equal (make-keymap) (make-keymap)))
 679   (should (equal (make-sparse-keymap) (make-sparse-keymap))))
 680
 681 (ert-deftest ert-test-significant-plist-keys ()
 682   (should (equal (ert--significant-plist-keys '()) '()))
 683   (should (equal (ert--significant-plist-keys '(a b c d e f c g p q r nil s t))
 684                  '(a c e p s))))
 685
 686 (ert-deftest ert-test-plist-difference-explanation ()
 687   (should (equal (ert--plist-difference-explanation
 688                   '(a b c nil) '(a b))
 689                  nil))
 690   (should (equal (ert--plist-difference-explanation
 691                   '(a b c t) '(a b))
 692                  '(different-properties-for-key c (different-atoms t nil))))
 693   (should (equal (ert--plist-difference-explanation
 694                   '(a b c t) '(c nil a b))
 695                  '(different-properties-for-key c (different-atoms t nil))))
 696   (should (equal (ert--plist-difference-explanation
 697                   '(a b c (foo . bar)) '(c (foo . baz) a b))
 698                  '(different-properties-for-key c
 699                                                 (cdr
 700                                                  (different-atoms bar baz))))))
 701
 702 (ert-deftest ert-test-abbreviate-string ()
 703   (should (equal (ert--abbreviate-string "foo" 4 nil) "foo"))
 704   (should (equal (ert--abbreviate-string "foo" 3 nil) "foo"))
 705   (should (equal (ert--abbreviate-string "foo" 3 nil) "foo"))
 706   (should (equal (ert--abbreviate-string "foo" 2 nil) "fo"))
 707   (should (equal (ert--abbreviate-string "foo" 1 nil) "f"))
 708   (should (equal (ert--abbreviate-string "foo" 0 nil) ""))
 709   (should (equal (ert--abbreviate-string "bar" 4 t) "bar"))
 710   (should (equal (ert--abbreviate-string "bar" 3 t) "bar"))
 711   (should (equal (ert--abbreviate-string "bar" 3 t) "bar"))
 712   (should (equal (ert--abbreviate-string "bar" 2 t) "ar"))
 713   (should (equal (ert--abbreviate-string "bar" 1 t) "r"))
 714   (should (equal (ert--abbreviate-string "bar" 0 t) "")))
 715
 716 (ert-deftest ert-test-explain-equal-string-properties ()
 717   (should
 718    (equal (ert--explain-equal-including-properties #("foo" 0 1 (a b))
 719                                                    "foo")
 720           '(char 0 "f"
 721                  (different-properties-for-key a (different-atoms b nil))
 722                  context-before ""
 723                  context-after "oo")))
 724   (should (equal (ert--explain-equal-including-properties
 725                   #("foo" 1 3 (a b))
 726                   #("goo" 0 1 (c d)))
 727                  '(array-elt 0 (different-atoms (?f "#x66" "?f")
 728                                                 (?g "#x67" "?g")))))
 729   (should
 730    (equal (ert--explain-equal-including-properties
 731            #("foo" 0 1 (a b c d) 1 3 (a b))
 732            #("foo" 0 1 (c d a b) 1 2 (a foo)))
 733           '(char 1 "o" (different-properties-for-key a (different-atoms b foo))
 734                  context-before "f" context-after "o"))))
 735
 736 (ert-deftest ert-test-equal-including-properties ()
 737   (should (equal-including-properties "foo" "foo"))
 738   (should (ert-equal-including-properties "foo" "foo"))
 739
 740   (should (equal-including-properties #("foo" 0 3 (a b))
 741                                       (propertize "foo" 'a 'b)))
 742   (should (ert-equal-including-properties #("foo" 0 3 (a b))
 743                                           (propertize "foo" 'a 'b)))
 744
 745   (should (equal-including-properties #("foo" 0 3 (a b c d))
 746                                       (propertize "foo" 'a 'b 'c 'd)))
 747   (should (ert-equal-including-properties #("foo" 0 3 (a b c d))
 748                                           (propertize "foo" 'a 'b 'c 'd)))
 749
 750   (should-not (equal-including-properties #("foo" 0 3 (a b c e))
 751                                           (propertize "foo" 'a 'b 'c 'd)))
 752   (should-not (ert-equal-including-properties #("foo" 0 3 (a b c e))
 753                                               (propertize "foo" 'a 'b 'c 'd)))
 754
 755   ;; This is bug 6581.
 756   (should-not (equal-including-properties #("foo" 0 3 (a (t)))
 757                                           (propertize "foo" 'a (list t))))
 758   (should (ert-equal-including-properties #("foo" 0 3 (a (t)))
 759                                           (propertize "foo" 'a (list t)))))
 760
 761 (ert-deftest ert-test-stats-set-test-and-result ()
 762   (let* ((test-1 (make-ert-test :name 'test-1
 763                                 :body (lambda () nil)))
 764          (test-2 (make-ert-test :name 'test-2
 765                                 :body (lambda () nil)))
 766          (test-3 (make-ert-test :name 'test-2
 767                                 :body (lambda () nil)))
 768          (stats (ert--make-stats (list test-1 test-2) 't))
 769          (failed (make-ert-test-failed :condition nil
 770                                        :backtrace nil
 771                                        :infos nil))
 772          (skipped (make-ert-test-skipped :condition nil
 773                                          :backtrace nil
 774                                          :infos nil)))
 775     (should (eql 2 (ert-stats-total stats)))
 776     (should (eql 0 (ert-stats-completed stats)))
 777     (should (eql 0 (ert-stats-completed-expected stats)))
 778     (should (eql 0 (ert-stats-completed-unexpected stats)))
 779     (should (eql 0 (ert-stats-skipped stats)))
 780     (ert--stats-set-test-and-result stats 0 test-1 (make-ert-test-passed))
 781     (should (eql 2 (ert-stats-total stats)))
 782     (should (eql 1 (ert-stats-completed stats)))
 783     (should (eql 1 (ert-stats-completed-expected stats)))
 784     (should (eql 0 (ert-stats-completed-unexpected stats)))
 785     (should (eql 0 (ert-stats-skipped stats)))
 786     (ert--stats-set-test-and-result stats 0 test-1 failed)
 787     (should (eql 2 (ert-stats-total stats)))
 788     (should (eql 1 (ert-stats-completed stats)))
 789     (should (eql 0 (ert-stats-completed-expected stats)))
 790     (should (eql 1 (ert-stats-completed-unexpected stats)))
 791     (should (eql 0 (ert-stats-skipped stats)))
 792     (ert--stats-set-test-and-result stats 0 test-1 nil)
 793     (should (eql 2 (ert-stats-total stats)))
 794     (should (eql 0 (ert-stats-completed stats)))
 795     (should (eql 0 (ert-stats-completed-expected stats)))
 796     (should (eql 0 (ert-stats-completed-unexpected stats)))
 797     (should (eql 0 (ert-stats-skipped stats)))
 798     (ert--stats-set-test-and-result stats 0 test-3 failed)
 799     (should (eql 2 (ert-stats-total stats)))
 800     (should (eql 1 (ert-stats-completed stats)))
 801     (should (eql 0 (ert-stats-completed-expected stats)))
 802     (should (eql 1 (ert-stats-completed-unexpected stats)))
 803     (should (eql 0 (ert-stats-skipped stats)))
 804     (ert--stats-set-test-and-result stats 1 test-2 (make-ert-test-passed))
 805     (should (eql 2 (ert-stats-total stats)))
 806     (should (eql 2 (ert-stats-completed stats)))
 807     (should (eql 1 (ert-stats-completed-expected stats)))
 808     (should (eql 1 (ert-stats-completed-unexpected stats)))
 809     (should (eql 0 (ert-stats-skipped stats)))
 810     (ert--stats-set-test-and-result stats 0 test-1 (make-ert-test-passed))
 811     (should (eql 2 (ert-stats-total stats)))
 812     (should (eql 2 (ert-stats-completed stats)))
 813     (should (eql 2 (ert-stats-completed-expected stats)))
 814     (should (eql 0 (ert-stats-completed-unexpected stats)))
 815     (should (eql 0 (ert-stats-skipped stats)))
 816     (ert--stats-set-test-and-result stats 0 test-1 skipped)
 817     (should (eql 2 (ert-stats-total stats)))
 818     (should (eql 2 (ert-stats-completed stats)))
 819     (should (eql 1 (ert-stats-completed-expected stats)))
 820     (should (eql 0 (ert-stats-completed-unexpected stats)))
 821     (should (eql 1 (ert-stats-skipped stats)))))
 822
 823
 824 (provide 'ert-tests)
 825
 826 ;;; ert-tests.el ends here