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authorDan Gudmundsson <[email protected]>2016-05-20 09:19:54 +0200
committerDan Gudmundsson <[email protected]>2016-05-20 09:19:54 +0200
commita02721920321d999a79dfd81494186b3ab3d3d81 (patch)
tree3bbc87bceec51a556dfccbedeb13c7d23418afcf /lib/tools/emacs/erlang-test.el
parent0bc0e3e51a4229245c4111667eec9133a1a8984c (diff)
parent39d33793479fd001dd06505575dd3294fe1d8ce4 (diff)
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Merge branch 'dgud/tools/emacs-xref/PR-1051'
* dgud/tools/emacs-xref/PR-1051: Add xref support in erlang.el Conflicts: lib/tools/emacs/erlang.el
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+;;; 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