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+;;; bindings.el --- tests for variable bindings
+
+;; Copyright (C) 2012 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(defvar binding-test-buffer-A (get-buffer-create "A"))
+(defvar binding-test-buffer-B (get-buffer-create "B"))
+
+(defvar binding-test-always-local 'always)
+(make-variable-buffer-local 'binding-test-always-local)
+
+(defvar binding-test-some-local 'some)
+(with-current-buffer binding-test-buffer-A
+ (set (make-local-variable 'binding-test-some-local) 'local))
+
+(ert-deftest binding-test-manual ()
+ "A test case from the elisp manual."
+ (save-excursion
+ (set-buffer binding-test-buffer-A)
+ (let ((binding-test-some-local 'something-else))
+ (should (eq binding-test-some-local 'something-else))
+ (set-buffer binding-test-buffer-B)
+ (should (eq binding-test-some-local 'some)))
+ (should (eq binding-test-some-local 'some))
+ (set-buffer binding-test-buffer-A)
+ (should (eq binding-test-some-local 'local))))
+
+(ert-deftest binding-test-setq-default ()
+ "Test that a setq-default has no effect when there is a local binding."
+ (save-excursion
+ (set-buffer binding-test-buffer-B)
+ ;; This variable is not local in this buffer.
+ (let ((binding-test-some-local 'something-else))
+ (setq-default binding-test-some-local 'new-default))
+ (should (eq binding-test-some-local 'some))))
+
+(ert-deftest binding-test-makunbound ()
+ "Tests of makunbound, from the manual."
+ (save-excursion
+ (set-buffer binding-test-buffer-B)
+ (should (boundp 'binding-test-some-local))
+ (let ((binding-test-some-local 'outer))
+ (let ((binding-test-some-local 'inner))
+ (makunbound 'binding-test-some-local)
+ (should (not (boundp 'binding-test-some-local))))
+ (should (and (boundp 'binding-test-some-local)
+ (eq binding-test-some-local 'outer))))))
+
+(ert-deftest binding-test-defvar-bool ()
+ "Test DEFVAR_BOOL"
+ (let ((display-hourglass 5))
+ (should (eq display-hourglass t))))
+
+(ert-deftest binding-test-defvar-int ()
+ "Test DEFVAR_INT"
+ (should-error (setq gc-cons-threshold 5.0) :type 'wrong-type-argument))
+
+(ert-deftest binding-test-set-constant-t ()
+ "Test setting the constant t"
+ (should-error (setq t 'bob) :type 'setting-constant))
+
+(ert-deftest binding-test-set-constant-nil ()
+ "Test setting the constant nil"
+ (should-error (setq nil 'bob) :type 'setting-constant))
+
+(ert-deftest binding-test-set-constant-keyword ()
+ "Test setting a keyword constant"
+ (should-error (setq :keyword 'bob) :type 'setting-constant))
+
+(ert-deftest binding-test-set-constant-nil ()
+ "Test setting a keyword to itself"
+ (should (setq :keyword :keyword)))
+
+;; More tests to write -
+;; kill-local-variable
+;; defconst; can modify
+;; defvar and defconst modify the local binding [ doesn't matter for us ]
+;; various kinds of special internal forwarding objects
+;; a couple examples in manual, not enough
+;; frame-local vars
+;; variable aliases
+
+;;; bindings.el ends here