summaryrefslogtreecommitdiffstats
path: root/third_party/python/gyp/tools/emacs/gyp-tests.el
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/python/gyp/tools/emacs/gyp-tests.el')
-rw-r--r--third_party/python/gyp/tools/emacs/gyp-tests.el63
1 files changed, 63 insertions, 0 deletions
diff --git a/third_party/python/gyp/tools/emacs/gyp-tests.el b/third_party/python/gyp/tools/emacs/gyp-tests.el
new file mode 100644
index 0000000000..11b8497886
--- /dev/null
+++ b/third_party/python/gyp/tools/emacs/gyp-tests.el
@@ -0,0 +1,63 @@
+;;; 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)))