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