my-emacs-d/elpa/flycheck-20161018.1343/flycheck-buttercup.el
Gergely Polonkai 175a795998 Update packages
2016-10-19 15:54:46 +02:00

145 lines
4.8 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; flycheck-buttercup.el --- Flycheck: Extensions to Buttercup -*- lexical-binding: t; -*-
;; Copyright (C) 2016 Sebastian Wiesner and Flycheck contributors
;; Author: Sebastian Wiesner <swiesner@lunaryorn.com>
;; Keywords: lisp, tools
;; 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:
;; Extensions to Buttercup to write BDD tests for Flycheck.
;;
;; Buttercup is a BDD testing framework for Emacs, see URL
;; `https://github.com/jorgenschaefer/emacs-buttercup/'. Flycheck uses
;; Buttercup extensively for new tests.
;;
;; This library provides extensions to Buttercup to write Specs for Flycheck.
;;
;; * Custom matchers
;;
;; (expect 'foo :to-be-local) - Is `foo' a local variable in the current buffer?
;;; Code:
(require 'buttercup)
(require 'flycheck)
(require 'seq)
;;; Buttercup helpers
(defun flycheck-buttercup-format-error-list (errors)
"Format ERRORS into a human-readable string."
(mapconcat (lambda (e) (flycheck-error-format e 'with-file-name))
errors "\n"))
;;; Data matchers
(buttercup-define-matcher :to-be-empty-string (s)
(if (equal s "")
(cons t (format "Expected %S not be an empty string" s))
(cons nil (format "Expected %S to be an empty string" s))))
(buttercup-define-matcher :to-match-with-group (re s index match)
(let* ((matches? (string-match re s))
(result (and matches? (match-string index s))))
(if (and matches? (equal result match))
(cons t (format "Expected %S not to match %S with %S in group %s"
re s match index))
(cons nil (format "Expected %S to match %S with %S in group %s, %s"
re s match index
(if matches?
(format "but got %S" result)
"but did not match"))))))
;;; Emacs feature matchers
(buttercup-define-matcher :to-be-live (buffer)
(let ((buffer (get-buffer buffer)))
(if (buffer-live-p buffer)
(cons t (format "Expected %S not to be a live buffer, but it is"
buffer))
(cons nil (format "Expected %S to be a live buffer, but it is not"
buffer)))))
(buttercup-define-matcher :to-be-visible (buffer)
(let ((buffer (get-buffer buffer)))
(cond
((and buffer (get-buffer-window buffer))
(cons t (format "Expected %S not to be a visible buffer, but it is"
buffer)))
((not (bufferp buffer))
(cons nil
(format "Expected %S to be a visible buffer, but it is not a buffer"
buffer)))
(t (cons
nil
(format "Expected %S to be a visible buffer, but it is not visible"
buffer))))))
(buttercup-define-matcher :to-be-local (symbol)
(if (local-variable-p symbol)
(cons t (format "Expected %S not to be a local variable, but it is"
symbol))
(cons nil (format "Expected %S to be a local variable, but it is not"
symbol))))
(buttercup-define-matcher :to-contain-match (buffer re)
(if (not (get-buffer buffer))
(cons nil (format "Expected %S to contain a match of %s, \
but is not a buffer" buffer re))
(with-current-buffer buffer
(save-excursion
(goto-char (point-min))
(if (re-search-forward re nil 'noerror)
(cons t (format "Expected %S to contain a match \
for %s, but it did not" buffer re))
(cons nil (format "Expected %S not to contain a match for \
%s but it did not." buffer re)))))))
;;; Flycheck matchers
(buttercup-define-matcher :to-be-equal-flycheck-errors (a b)
(let ((a-formatted (flycheck-buttercup-format-error-list a))
(b-formatted (flycheck-buttercup-format-error-list b)))
(if (equal a b)
(cons t (format "Expected
%s
not to be equal to
%s" a-formatted b-formatted))
(cons nil (format "Expected
%s
to be equal to
%s" a-formatted b-formatted)))))
(provide 'flycheck-buttercup)
;; Disable byte compilation for this library, to prevent package.el choking on a
;; missing `buttercup' library. See
;; https://github.com/flycheck/flycheck/issues/860
;; Local Variables:
;; no-byte-compile: t
;; End:
;;; flycheck-buttercup.el ends here