diff options
Diffstat (limited to 'configs/shared/emacs/.emacs.d/elpa/flycheck-20180907.1319/flycheck-ert.el')
| -rw-r--r-- | configs/shared/emacs/.emacs.d/elpa/flycheck-20180907.1319/flycheck-ert.el | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/configs/shared/emacs/.emacs.d/elpa/flycheck-20180907.1319/flycheck-ert.el b/configs/shared/emacs/.emacs.d/elpa/flycheck-20180907.1319/flycheck-ert.el new file mode 100644 index 000000000000..b7c2bc0fe0cb --- /dev/null +++ b/configs/shared/emacs/.emacs.d/elpa/flycheck-20180907.1319/flycheck-ert.el @@ -0,0 +1,483 @@ +;;; flycheck-ert.el --- Flycheck: ERT extensions -*- lexical-binding: t; -*- + +;; Copyright (C) 2017-2018 Flycheck contributors +;; Copyright (C) 2013-2016 Sebastian Wiesner and Flycheck contributors + +;; Author: Sebastian Wiesner <swiesner@lunaryorn.com> +;; Maintainer: Clément Pit-Claudel <clement.pitclaudel@live.com> +;; fmdkdd <fmdkdd@gmail.com> +;; URL: https://github.com/flycheck/flycheck + +;; This file is not part of GNU Emacs. + +;; This program 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. + +;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>. + +;;; Commentary: + +;; Unit testing library for Flycheck, the modern on-the-fly syntax checking +;; extension for GNU Emacs. + +;; Provide various utility functions and unit test helpers to test Flycheck and +;; Flycheck extensions. + +;;; Code: + +(require 'flycheck) +(require 'ert) +(require 'macroexp) ; For macro utilities + + +;;; Compatibility + +(eval-and-compile + ;; Provide `ert-skip' and friends for Emacs 24.3 + (defconst flycheck-ert-ert-can-skip (fboundp 'ert-skip) + "Whether ERT supports test skipping.") + + (unless (fboundp 'define-error) + ;; from Emacs `subr.el' + (defun define-error (name message &optional parent) + "Define NAME as a new error signal. +MESSAGE is a string that will be output to the echo area if such an error +is signaled without being caught by a `condition-case'. +PARENT is either a signal or a list of signals from which it inherits. +Defaults to `error'." + (unless parent (setq parent 'error)) + (let ((conditions + (if (consp parent) + (apply #'append + (mapcar + (lambda (parent) + (cons parent + (or (get parent 'error-conditions) + (error "Unknown signal `%s'" parent)))) + parent)) + (cons parent (get parent 'error-conditions))))) + (put name 'error-conditions + (delete-dups (copy-sequence (cons name conditions)))) + (when message (put name 'error-message message))))) + + (unless flycheck-ert-ert-can-skip + ;; Fake skipping + + (define-error 'flycheck-ert-skipped "Test skipped") + + (defun ert-skip (data) + (signal 'flycheck-ert-skipped data)) + + (defmacro skip-unless (form) + `(unless (ignore-errors ,form) + (signal 'flycheck-ert-skipped ',form))) + + (defun ert-test-skipped-p (result) + (and (ert-test-failed-p result) + (eq (car (ert-test-failed-condition result)) + 'flycheck-ert-skipped))))) + + +;;; Internal variables + +(defvar flycheck-ert--resource-directory nil + "The directory to get resources from in this test suite.") + + +;;; Resource management macros + +(defmacro flycheck-ert-with-temp-buffer (&rest body) + "Eval BODY within a temporary buffer. + +Like `with-temp-buffer', but resets the modification state of the +temporary buffer to make sure that it is properly killed even if +it has a backing file and is modified." + (declare (indent 0)) + `(with-temp-buffer + (unwind-protect + ,(macroexp-progn body) + ;; Reset modification state of the buffer, and unlink it from its backing + ;; file, if any, because Emacs refuses to kill modified buffers with + ;; backing files, even if they are temporary. + (set-buffer-modified-p nil) + (set-visited-file-name nil 'no-query)))) + +(defmacro flycheck-ert-with-file-buffer (file-name &rest body) + "Create a buffer from FILE-NAME and eval BODY. + +BODY is evaluated with `current-buffer' being a buffer with the +contents FILE-NAME." + (declare (indent 1)) + `(let ((file-name ,file-name)) + (unless (file-exists-p file-name) + (error "%s does not exist" file-name)) + (flycheck-ert-with-temp-buffer + (insert-file-contents file-name 'visit) + (set-visited-file-name file-name 'no-query) + (cd (file-name-directory file-name)) + ;; Mark the buffer as not modified, because we just loaded the file up to + ;; now. + (set-buffer-modified-p nil) + ,@body))) + +(defmacro flycheck-ert-with-help-buffer (&rest body) + "Execute BODY and kill the help buffer afterwards. + +Use this macro to test functions that create a Help buffer." + (declare (indent 0)) + `(unwind-protect + ,(macroexp-progn body) + (when (buffer-live-p (get-buffer (help-buffer))) + (kill-buffer (help-buffer))))) + +(defmacro flycheck-ert-with-global-mode (&rest body) + "Execute BODY with Global Flycheck Mode enabled. + +After BODY, restore the old state of Global Flycheck Mode." + (declare (indent 0)) + `(let ((old-state global-flycheck-mode)) + (unwind-protect + (progn + (global-flycheck-mode 1) + ,@body) + (global-flycheck-mode (if old-state 1 -1))))) + +(defmacro flycheck-ert-with-env (env &rest body) + "Add ENV to `process-environment' in BODY. + +Execute BODY with a `process-environment' which contains all +variables from ENV added. + +ENV is an alist, where each cons cell `(VAR . VALUE)' is a +environment variable VAR to be added to `process-environment' +with VALUE." + (declare (indent 1)) + `(let ((process-environment (copy-sequence process-environment))) + (pcase-dolist (`(,var . ,value) ,env) + (setenv var value)) + ,@body)) + + +;;; Test resources +(defun flycheck-ert-resource-filename (resource-file) + "Determine the absolute file name of a RESOURCE-FILE. + +Relative file names are expanded against +`flycheck-ert--resource-directory'." + (expand-file-name resource-file flycheck-ert--resource-directory)) + +(defmacro flycheck-ert-with-resource-buffer (resource-file &rest body) + "Create a temp buffer from a RESOURCE-FILE and execute BODY. + +The absolute file name of RESOURCE-FILE is determined with +`flycheck-ert-resource-filename'." + (declare (indent 1)) + `(flycheck-ert-with-file-buffer + (flycheck-ert-resource-filename ,resource-file) + ,@body)) + + +;;; Test suite initialization + +(defun flycheck-ert-initialize (resource-dir) + "Initialize a test suite with RESOURCE-DIR. + +RESOURCE-DIR is the directory, `flycheck-ert-resource-filename' +should use to lookup resource files." + (when flycheck-ert--resource-directory + (error "Test suite already initialized")) + (let ((tests (ert-select-tests t t))) + ;; Select all tests + (unless tests + (error "No tests defined. \ +Call `flycheck-ert-initialize' after defining all tests!")) + + (setq flycheck-ert--resource-directory resource-dir) + + ;; Emacs 24.3 don't support skipped tests, so we add poor man's test + ;; skipping: We mark skipped tests as expected failures by adjusting the + ;; expected result of all test cases. Not particularly pretty, but works :) + (unless flycheck-ert-ert-can-skip + (dolist (test tests) + (let ((result (ert-test-expected-result-type test))) + (setf (ert-test-expected-result-type test) + `(or ,result (satisfies ert-test-skipped-p)))))))) + + +;;; Test case definitions +(defmacro flycheck-ert-def-checker-test (checker language name + &rest keys-and-body) + "Define a test case for a syntax CHECKER for LANGUAGE. + +CHECKER is a symbol or a list of symbols denoting syntax checkers +being tested by the test. The test case is skipped, if any of +these checkers cannot be used. LANGUAGE is a symbol or a list of +symbols denoting the programming languages supported by the +syntax checkers. This is currently only used for tagging the +test appropriately. + +NAME is a symbol denoting the local name of the test. The test +itself is ultimately named +`flycheck-define-checker/CHECKER/NAME'. If CHECKER is a list, +the first checker in the list is used for naming the test. + +Optionally, the keyword arguments `:tags' and `:expected-result' +may be given. They have the same meaning as in `ert-deftest.', +and are added to the tags and result expectations set up by this +macro. + +The remaining forms KEYS-AND-BODY denote the body of the test +case, including assertions and setup code." + (declare (indent 3)) + (unless checker + (error "No syntax checkers specified")) + (unless language + (error "No languages specified")) + (let* ((checkers (if (symbolp checker) (list checker) checker)) + (checker (car checkers)) + (languages (if (symbolp language) (list language) language)) + (language-tags (mapcar (lambda (l) (intern (format "language-%s" l))) + languages)) + (checker-tags (mapcar (lambda (c) (intern (format "checker-%s" c))) + checkers)) + (local-name (or name 'default)) + (full-name (intern (format "flycheck-define-checker/%s/%s" + checker local-name))) + (keys-and-body (ert--parse-keys-and-body keys-and-body)) + (body (cadr keys-and-body)) + (keys (car keys-and-body)) + (default-tags '(syntax-checker external-tool))) + `(ert-deftest ,full-name () + :expected-result ,(or (plist-get keys :expected-result) :passed) + :tags (append ',(append default-tags language-tags checker-tags) + ,(plist-get keys :tags)) + ,@(mapcar (lambda (c) + `(skip-unless + ;; Ignore non-command checkers + (or (not (flycheck-checker-get ',c 'command)) + (executable-find (flycheck-checker-executable ',c))))) + checkers) + ,@body))) + + +;;; Test case results + +(defun flycheck-ert-syntax-check-timed-out-p (result) + "Whether RESULT denotes a timed-out test. + +RESULT is an ERT test result object." + (and (ert-test-failed-p result) + (eq (car (ert-test-failed-condition result)) + 'flycheck-ert-syntax-check-timed-out))) + + +;;; Syntax checking in tests + +(defvar-local flycheck-ert-syntax-checker-finished nil + "Non-nil if the current checker has finished.") + +(add-hook 'flycheck-after-syntax-check-hook + (lambda () (setq flycheck-ert-syntax-checker-finished t))) + +(defconst flycheck-ert-checker-wait-time 10 + "Time to wait until a checker is finished in seconds. + +After this time has elapsed, the checker is considered to have +failed, and the test aborted with failure.") + +(define-error 'flycheck-ert-syntax-check-timed-out "Syntax check timed out.") + +(defun flycheck-ert-wait-for-syntax-checker () + "Wait until the syntax check in the current buffer is finished." + (let ((starttime (float-time))) + (while (and (not flycheck-ert-syntax-checker-finished) + (< (- (float-time) starttime) flycheck-ert-checker-wait-time)) + (sleep-for 1)) + (unless (< (- (float-time) starttime) flycheck-ert-checker-wait-time) + (flycheck-stop) + (signal 'flycheck-ert-syntax-check-timed-out nil))) + (setq flycheck-ert-syntax-checker-finished nil)) + +(defun flycheck-ert-buffer-sync () + "Like `flycheck-buffer', but synchronously." + (setq flycheck-ert-syntax-checker-finished nil) + (should (not (flycheck-running-p))) + (flycheck-mode) ; This will only start a deferred check, + (flycheck-buffer) ; so we need an explicit manual check + ;; After starting the check, the checker should either be running now, or + ;; already be finished (if it was fast). + (should (or flycheck-current-syntax-check + flycheck-ert-syntax-checker-finished)) + ;; Also there should be no deferred check pending anymore + (should-not (flycheck-deferred-check-p)) + (flycheck-ert-wait-for-syntax-checker)) + +(defun flycheck-ert-ensure-clear () + "Clear the current buffer. + +Raise an assertion error if the buffer is not clear afterwards." + (flycheck-clear) + (should (not flycheck-current-errors)) + (should (not (-any? (lambda (ov) (overlay-get ov 'flycheck-overlay)) + (overlays-in (point-min) (point-max)))))) + + +;;; Test assertions + +(defun flycheck-error-without-group (err) + "Return a copy ERR with the `group' property set to nil." + (let ((copy (copy-flycheck-error err))) + (setf (flycheck-error-group copy) nil) + copy)) + +(defun flycheck-ert-should-overlay (error) + "Test that ERROR has a proper overlay in the current buffer. + +ERROR is a Flycheck error object." + (let* ((overlay (-first (lambda (ov) + (equal (flycheck-error-without-group + (overlay-get ov 'flycheck-error)) + (flycheck-error-without-group error))) + (flycheck-overlays-in 0 (+ 1 (buffer-size))))) + (region + ;; Overlays of errors from other files are on the first line + (if (flycheck-relevant-error-other-file-p error) + (cons (point-min) + (save-excursion (goto-char (point-min)) (point-at-eol))) + (flycheck-error-region-for-mode error 'symbols))) + (level (flycheck-error-level error)) + (category (flycheck-error-level-overlay-category level)) + (face (get category 'face)) + (fringe-bitmap (flycheck-error-level-fringe-bitmap level)) + (fringe-face (flycheck-error-level-fringe-face level)) + (fringe-icon (list 'left-fringe fringe-bitmap fringe-face))) + (should overlay) + (should (overlay-get overlay 'flycheck-overlay)) + (should (= (overlay-start overlay) (car region))) + (should (= (overlay-end overlay) (cdr region))) + (should (eq (overlay-get overlay 'face) face)) + (should (equal (get-char-property 0 'display + (overlay-get overlay 'before-string)) + fringe-icon)) + (should (eq (overlay-get overlay 'category) category)) + (should (equal (flycheck-error-without-group (overlay-get overlay + 'flycheck-error)) + (flycheck-error-without-group error))))) + +(defun flycheck-ert-should-errors (&rest errors) + "Test that the current buffers has ERRORS. + +ERRORS is a list of errors expected to be present in the current +buffer. Each error is given as a list of arguments to +`flycheck-error-new-at'. + +If ERRORS are omitted, test that there are no errors at all in +the current buffer. + +With ERRORS, test that each error in ERRORS is present in the +current buffer, and that the number of errors in the current +buffer is equal to the number of given ERRORS. In other words, +check that the buffer has all ERRORS, and no other errors." + (let ((expected (mapcar (apply-partially #'apply #'flycheck-error-new-at) + errors))) + (should (equal (mapcar #'flycheck-error-without-group expected) + (mapcar #'flycheck-error-without-group + flycheck-current-errors))) + ;; Check that related errors are the same + (cl-mapcar (lambda (err1 err2) + (should (equal (mapcar #'flycheck-error-without-group + (flycheck-related-errors err1 expected)) + (mapcar #'flycheck-error-without-group + (flycheck-related-errors err2))))) + expected flycheck-current-errors) + (mapc #'flycheck-ert-should-overlay expected)) + (should (= (length errors) + (length (flycheck-overlays-in (point-min) (point-max)))))) + +(define-error 'flycheck-ert-suspicious-checker "Suspicious state from checker") + +(defun flycheck-ert-should-syntax-check (resource-file modes &rest errors) + "Test a syntax check in RESOURCE-FILE with MODES. + +RESOURCE-FILE is the file to check. MODES is a single major mode +symbol or a list thereof, specifying the major modes to syntax +check with. If more than one major mode is specified, the test +is run for each mode separately, so if you give three major +modes, the entire test will run three times. ERRORS is the list +of expected errors, as in `flycheck-ert-should-errors'. If +omitted, the syntax check must not emit any errors. The errors +are cleared after each test. + +The syntax checker is selected via standard syntax checker +selection. To test a specific checker, you need to set +`flycheck-checker' or `flycheck-disabled-checkers' accordingly +before using this predicate, depending on whether you want to use +manual or automatic checker selection. + +During the syntax check, configuration files of syntax checkers +are also searched in the `config-files' sub-directory of the +resource directory." + (when (symbolp modes) + (setq modes (list modes))) + (dolist (mode modes) + (unless (fboundp mode) + (ert-skip (format "%S missing" mode))) + (flycheck-ert-with-resource-buffer resource-file + (funcall mode) + ;; Load safe file-local variables because some tests depend on them + (let ((enable-local-variables :safe) + ;; Disable all hooks at this place, to prevent 3rd party packages + ;; from interfering + (hack-local-variables-hook)) + (hack-local-variables)) + ;; Configure config file locating for unit tests + (let ((process-hook-called 0)) + (add-hook 'flycheck-process-error-functions + (lambda (_err) + (setq process-hook-called (1+ process-hook-called)) + nil) + nil :local) + (add-hook 'flycheck-status-changed-functions + (lambda (status) + (when (eq status 'suspicious) + (signal 'flycheck-ert-suspicious-checker nil)))) + (flycheck-ert-buffer-sync) + (apply #'flycheck-ert-should-errors errors) + (should (= process-hook-called (length errors)))) + (flycheck-ert-ensure-clear)))) + +(defun flycheck-ert-at-nth-error (n) + "Determine whether point is at the N'th Flycheck error. + +Return non-nil if the point is at the N'th Flycheck error in the +current buffer. Otherwise return nil." + (let* ((error (nth (1- n) flycheck-current-errors)) + (mode flycheck-highlighting-mode) + (region (flycheck-error-region-for-mode error mode))) + (and (member error (flycheck-overlay-errors-at (point))) + (= (point) (car region))))) + +(defun flycheck-ert-explain--at-nth-error (n) + "Explain a failed at-nth-error predicate at N." + (let ((errors (flycheck-overlay-errors-at (point)))) + (if (null errors) + (format "Expected to be at error %s, but no error at point %s" + n (point)) + (let ((pos (cl-position (car errors) flycheck-current-errors))) + (format "Expected to be at error %s, but point %s is at error %s" + n (point) (1+ pos)))))) + +(put 'flycheck-ert-at-nth-error 'ert-explainer + 'flycheck-ert-explain--at-nth-error) + +(provide 'flycheck-ert) + +;;; flycheck-ert.el ends here |