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Diffstat (limited to 'lib/tools/emacs/erlang-test.el')
| -rw-r--r-- | lib/tools/emacs/erlang-test.el | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/lib/tools/emacs/erlang-test.el b/lib/tools/emacs/erlang-test.el new file mode 100644 index 0000000000..a5aab04953 --- /dev/null +++ b/lib/tools/emacs/erlang-test.el @@ -0,0 +1,107 @@ +;;; erlang-test.el -*- lexical-binding: t; coding: utf-8-unix -*- + +;;; Unit tests for erlang.el. + +;; Author: Johan Claesson +;; Created: 2016-05-07 +;; Keywords: erlang, languages + +;; %CopyrightBegin% +;; +;; Copyright Ericsson AB 2016. All Rights Reserved. +;; +;; Licensed under the Apache License, Version 2.0 (the "License"); +;; you may not use this file except in compliance with the License. +;; You may obtain a copy of the License at +;; +;; http://www.apache.org/licenses/LICENSE-2.0 +;; +;; Unless required by applicable law or agreed to in writing, software +;; distributed under the License is distributed on an "AS IS" BASIS, +;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +;; See the License for the specific language governing permissions and +;; limitations under the License. +;; +;; %CopyrightEnd% + + +;;; Commentary: + +;; This library require GNU Emacs 25 or later. + +;;; Code: + +(require 'ert) +(require 'cl-lib) + +(defvar erlang-test-code + '((nil . "-module(erlang_test).") + (nil . "-import(lists, [map/2]).") + (nil . "-compile(export_all).") + ("SYMBOL" . "-define(SYMBOL, value).") + ("MACRO" . "-define(MACRO(X), X + X).") + ("struct" . "-record(struct, {until,maps,are,everywhere}).") + ("function". "function() -> #struct{}.")) + "Alist of erlang test code. +Each entry have the format (TAGNAME . ERLANG_CODE). If TAGNAME +is nil there is no definitions in the ERLANG_CODE. The +ERLANG_CODE is a single line of erlang code. These lines will be +concatenated to form an erlang file to test on.") + + +(ert-deftest erlang-test-tags () + (let* ((dir (make-temp-file "erlang-test" t)) + (erlang-file (expand-file-name "erlang_test.erl" dir)) + (tags-file (expand-file-name "TAGS" dir)) + tags-file-name tags-table-list erlang-buffer) + (unwind-protect + (progn + (erlang-test-create-erlang-file erlang-file) + (erlang-test-compile-tags erlang-file tags-file) + (setq erlang-buffer (find-file-noselect erlang-file)) + (with-current-buffer erlang-buffer + (setq-local tags-file-name tags-file)) + ;; PENDING - setting global tags-file-name is a workaround + ;; for GNU Emacs bug23164. + (setq tags-file-name tags-file) + (erlang-test-xref-find-definitions erlang-file erlang-buffer)) + (when (buffer-live-p erlang-buffer) + (kill-buffer erlang-buffer)) + (let ((tags-buffer (find-buffer-visiting tags-file))) + (when (buffer-live-p tags-buffer) + (kill-buffer tags-buffer))) + (when (file-exists-p dir) + (delete-directory dir t))))) + +(defun erlang-test-create-erlang-file (erlang-file) + (with-temp-file erlang-file + (cl-loop for (_ . code) in erlang-test-code + do (insert code "\n")))) + +(defun erlang-test-compile-tags (erlang-file tags-file) + (should (zerop (call-process "etags" nil nil nil + "-o" tags-file + erlang-file)))) + +(defun erlang-test-xref-find-definitions (erlang-file erlang-buffer) + (cl-loop for (tagname . code) in erlang-test-code + for line = 1 then (1+ line) + do (when tagname + (switch-to-buffer erlang-buffer) + (xref-find-definitions tagname) + (erlang-test-verify-pos erlang-file line) + (xref-find-definitions (concat "erlang_test:" tagname)) + (erlang-test-verify-pos erlang-file line))) + (xref-find-definitions "erlang_test:") + (erlang-test-verify-pos erlang-file 1)) + +(defun erlang-test-verify-pos (expected-file expected-line) + (should (string-equal (file-truename expected-file) + (file-truename (buffer-file-name)))) + (should (eq expected-line (line-number-at-pos))) + (should (= (point-at-bol) (point)))) + + +(provide 'erlang-test) + +;;; erlang-test.el ends here |