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;;; gyp-tests.el - unit tests for gyp-mode. ;; Copyright (c) 2012 Google Inc. All rights reserved. ;; Use of this source code is governed by a BSD-style license that can be ;; found in the LICENSE file. ;; The recommended way to run these tests is to run them from the command-line, ;; with the run-unit-tests.sh script. (require 'cl) (require 'ert) (require 'gyp) (defconst samples (directory-files "testdata" t ".gyp$") "List of golden samples to check") (defun fontify (filename) (with-temp-buffer (insert-file-contents-literally filename) (gyp-mode) (font-lock-fontify-buffer) (buffer-string))) (defun read-golden-sample (filename) (with-temp-buffer (insert-file-contents-literally (concat filename ".fontified")) (read (current-buffer)))) (defun equivalent-face (face) "For the purposes of face comparison, we're not interested in the differences between certain faces. For example, the difference between font-lock-comment-delimiter and font-lock-comment-face." (case face ((font-lock-comment-delimiter-face) font-lock-comment-face) (t face))) (defun text-face-properties (s) "Extract the text properties from s" (let ((result (list t))) (dotimes (i (length s)) (setq result (cons (equivalent-face (get-text-property i 'face s)) result))) (nreverse result))) (ert-deftest test-golden-samples () "Check that fontification produces the same results as the golden samples" (dolist (sample samples) (let ((golden (read-golden-sample sample)) (fontified (fontify sample))) (should (equal golden fontified)) (should (equal (text-face-properties golden) (text-face-properties fontified)))))) (defun create-golden-sample (filename) "Create a golden sample by fontifying filename and writing out the printable representation of the fontified buffer (with text properties) to the FILENAME.fontified" (with-temp-file (concat filename ".fontified") (print (fontify filename) (current-buffer)))) (defun create-golden-samples () "Recreate the golden samples" (dolist (sample samples) (create-golden-sample sample)))