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emacs/test/lisp/files-x-tests.el
Michael Albinus 6647e05174 Implement connection-local variables
* doc/lispref/variables.texi (Connection Local Variables): New section.

* etc/NEWS: Mention connection-local variables.

* lisp/files-x.el (enable-connection-local-variables)
(connection-local-variables-alist, connection-local-class-alist)
(connection-local-criteria-alist): New defvars.
(connection-local-get-classes)
(connection-local-get-class-variables): New defsubst.
(connection-local-set-classes)
(connection-local-set-class-variables)
(hack-connection-local-variables)
(hack-connection-local-variables-apply): New defuns.
(with-connection-local-classes): New defmacro.

* lisp/net/tramp.el (tramp-set-connection-local-variables): New defun.

* lisp/net/tramp-adb.el (tramp-adb-maybe-open-connection):
* lisp/net/tramp-gvfs.el (tramp-gvfs-maybe-open-connection):
* lisp/net/lisp/net/tramp-sh.el (tramp-maybe-open-connection):
* lisp/net/tramp-smb.el (tramp-smb-maybe-open-connection): Use it.

* test/lisp/files-x-tests.el: New file.
2016-11-14 13:56:58 +01:00

298 lines
12 KiB
EmacsLisp

;;; files-x-tests.el --- tests for files-x.el.
;; Copyright (C) 2016 Free Software Foundation, Inc.
;; Author: Michael Albinus <michael.albinus@gmx.de>
;; 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:
(require 'ert)
(require 'files-x)
(defvar files-x-test--criteria1 "my-user@my-remote-host")
(defvar files-x-test--criteria2
(lambda (identification)
(string-match "another-user@my-remote-host" identification)))
(defvar files-x-test--criteria3 nil)
(defvar files-x-test--variables1
'((remote-shell-file-name . "/bin/bash")
(remote-shell-command-switch . "-c")
(remote-shell-interactive-switch . "-i")
(remote-shell-login-switch . "-l")))
(defvar files-x-test--variables2
'((remote-shell-file-name . "/bin/ksh")))
(defvar files-x-test--variables3
'((remote-null-device . "/dev/null")))
(defvar files-x-test--variables4
'((remote-null-device . "null")))
(ert-deftest files-x-test-connection-local-set-class-variables ()
"Test setting connection-local class variables."
;; Declare (CLASS VARIABLES) objects.
(let (connection-local-class-alist connection-local-criteria-alist)
(connection-local-set-class-variables 'remote-bash files-x-test--variables1)
(should
(equal
(connection-local-get-class-variables 'remote-bash)
files-x-test--variables1))
(connection-local-set-class-variables 'remote-ksh files-x-test--variables2)
(should
(equal
(connection-local-get-class-variables 'remote-ksh)
files-x-test--variables2))
(connection-local-set-class-variables
'remote-nullfile files-x-test--variables3)
(should
(equal
(connection-local-get-class-variables 'remote-nullfile)
files-x-test--variables3))
;; A redefinition overwrites existing values.
(connection-local-set-class-variables
'remote-nullfile files-x-test--variables4)
(should
(equal
(connection-local-get-class-variables 'remote-nullfile)
files-x-test--variables4))))
(ert-deftest files-x-test-connection-local-set-classes ()
"Test setting connection-local classes."
;; Declare (CRITERIA CLASSES) objects.
(let (connection-local-class-alist connection-local-criteria-alist)
(connection-local-set-class-variables 'remote-bash files-x-test--variables1)
(connection-local-set-class-variables 'remote-ksh files-x-test--variables2)
(connection-local-set-class-variables
'remote-nullfile files-x-test--variables3)
(connection-local-set-classes
files-x-test--criteria1 'remote-bash 'remote-ksh)
(should
(equal
(connection-local-get-classes files-x-test--criteria1)
'(remote-bash remote-ksh)))
(connection-local-set-classes files-x-test--criteria2 'remote-ksh)
(should
(equal
(connection-local-get-classes files-x-test--criteria2)
'(remote-ksh)))
;; A further call adds classes.
(connection-local-set-classes files-x-test--criteria2 'remote-nullfile)
(should
(equal
(connection-local-get-classes files-x-test--criteria2)
'(remote-ksh remote-nullfile)))
;; Adding existing classes doesn't matter.
(connection-local-set-classes
files-x-test--criteria2 'remote-bash 'remote-nullfile)
(should
(equal
(connection-local-get-classes files-x-test--criteria2)
'(remote-ksh remote-nullfile remote-bash)))
;; An empty variable list is accepted (but makes no sense).
(connection-local-set-classes files-x-test--criteria3)
(should-not (connection-local-get-classes files-x-test--criteria3))
;; Using a nil criteria also works. Duplicate classes are trashed.
(connection-local-set-classes
files-x-test--criteria3 'remote-bash 'remote-ksh 'remote-ksh 'remote-bash)
(should
(equal
(connection-local-get-classes files-x-test--criteria3)
'(remote-bash remote-ksh)))
;; A criteria other than nil, regexp or lambda function is wrong.
(should-error (connection-local-set-classes 'dummy))))
(ert-deftest files-x-test-hack-connection-local-variables-apply ()
"Test setting connection-local variables."
(let (connection-local-class-alist connection-local-criteria-alist)
(connection-local-set-class-variables 'remote-bash files-x-test--variables1)
(connection-local-set-class-variables 'remote-ksh files-x-test--variables2)
(connection-local-set-class-variables
'remote-nullfile files-x-test--variables3)
(connection-local-set-classes
files-x-test--criteria1 'remote-bash 'remote-ksh)
(connection-local-set-classes
files-x-test--criteria2 'remote-ksh 'remote-nullfile)
;; Apply the variables.
(with-temp-buffer
(let ((enable-connection-local-variables t)
(default-directory "/sudo:my-user@my-remote-host:"))
(should-not connection-local-variables-alist)
(should-not (local-variable-p 'remote-shell-file-name))
(should-not (boundp 'remote-shell-file-name))
(hack-connection-local-variables-apply)
;; All connection-local variables are set. They apply in
;; reverse order in `connection-local-variables-alist'. The
;; settings from `remote-ksh' are not contained, because they
;; declare same variables as in `remote-bash'.
(should
(equal connection-local-variables-alist
(nreverse (copy-tree files-x-test--variables1))))
;; The variables exist also as local variables.
(should (local-variable-p 'remote-shell-file-name))
;; The proper variable value is set.
(should
(string-equal (symbol-value 'remote-shell-file-name) "/bin/bash"))))
;; The second test case.
(with-temp-buffer
(let ((enable-connection-local-variables t)
(default-directory "/ssh:another-user@my-remote-host:"))
(should-not connection-local-variables-alist)
(should-not (local-variable-p 'remote-shell-file-name))
(should-not (boundp 'remote-shell-file-name))
(hack-connection-local-variables-apply)
;; All connection-local variables are set. They apply in
;; reverse order in `connection-local-variables-alist'.
(should
(equal connection-local-variables-alist
(append
(nreverse (copy-tree files-x-test--variables3))
(nreverse (copy-tree files-x-test--variables2)))))
;; The variables exist also as local variables.
(should (local-variable-p 'remote-shell-file-name))
;; The proper variable value is set.
(should
(string-equal (symbol-value 'remote-shell-file-name) "/bin/ksh"))))
;; The third test case. Both `files-x-test--criteria1' and
;; `files-x-test--criteria3' apply, but there are no double
;; entries.
(connection-local-set-classes
files-x-test--criteria3 'remote-bash 'remote-ksh)
(with-temp-buffer
(let ((enable-connection-local-variables t)
(default-directory "/sudo:my-user@my-remote-host:"))
(should-not connection-local-variables-alist)
(should-not (local-variable-p 'remote-shell-file-name))
(should-not (boundp 'remote-shell-file-name))
(hack-connection-local-variables-apply)
;; All connection-local variables are set. They apply in
;; reverse order in `connection-local-variables-alist'. The
;; settings from `remote-ksh' are not contained, because they
;; declare same variables as in `remote-bash'.
(should
(equal connection-local-variables-alist
(nreverse (copy-tree files-x-test--variables1))))
;; The variables exist also as local variables.
(should (local-variable-p 'remote-shell-file-name))
;; The proper variable value is set.
(should
(string-equal (symbol-value 'remote-shell-file-name) "/bin/bash"))))
;; When `enable-connection-local-variables' is nil, nothing happens.
(with-temp-buffer
(let ((enable-connection-local-variables nil)
(default-directory "/ssh:another-user@my-remote-host:"))
(should-not connection-local-variables-alist)
(should-not (local-variable-p 'remote-shell-file-name))
(should-not (boundp 'remote-shell-file-name))
(hack-connection-local-variables-apply)
(should-not connection-local-variables-alist)
(should-not (local-variable-p 'remote-shell-file-name))
(should-not (boundp 'remote-shell-file-name))))))
(ert-deftest files-x-test-with-connection-local-classes ()
"Test setting connection-local variables."
(let (connection-local-class-alist connection-local-criteria-alist)
(connection-local-set-class-variables 'remote-bash files-x-test--variables1)
(connection-local-set-class-variables 'remote-ksh files-x-test--variables2)
(connection-local-set-class-variables
'remote-nullfile files-x-test--variables3)
(connection-local-set-classes
files-x-test--criteria3 'remote-ksh 'remote-nullfile)
(with-temp-buffer
(let ((enable-connection-local-variables t)
(default-directory "/sudo:my-user@my-remote-host:"))
(hack-connection-local-variables-apply)
;; All connection-local variables are set. They apply in
;; reverse order in `connection-local-variables-alist'.
(should
(equal connection-local-variables-alist
(append
(nreverse (copy-tree files-x-test--variables3))
(nreverse (copy-tree files-x-test--variables2)))))
;; The variables exist also as local variables.
(should (local-variable-p 'remote-shell-file-name))
(should (local-variable-p 'remote-null-device))
;; The proper variable values are set.
(should
(string-equal (symbol-value 'remote-shell-file-name) "/bin/ksh"))
(should
(string-equal (symbol-value 'remote-null-device) "/dev/null"))
;; A candidate connection-local variable is not bound yet.
(should-not (local-variable-p 'remote-shell-command-switch))
;; Use the macro.
(with-connection-local-classes '(remote-bash remote-ksh)
;; All connection-local variables are set. They apply in
;; reverse order in `connection-local-variables-alist'.
;; This variable keeps only the variables to be set inside
;; the macro.
(should
(equal connection-local-variables-alist
(nreverse (copy-tree files-x-test--variables1))))
;; The variables exist also as local variables.
(should (local-variable-p 'remote-shell-file-name))
(should (local-variable-p 'remote-shell-command-switch))
;; The proper variable values are set. The settings from
;; `remote-bash' overwrite the same variables as in
;; `remote-ksh'.
(should
(string-equal (symbol-value 'remote-shell-file-name) "/bin/bash"))
(should
(string-equal (symbol-value 'remote-shell-command-switch) "-c")))
;; Everything is rewound. The old variable values are reset.
(should
(equal connection-local-variables-alist
(append
(nreverse (copy-tree files-x-test--variables3))
(nreverse (copy-tree files-x-test--variables2)))))
;; The variables exist also as local variables.
(should (local-variable-p 'remote-shell-file-name))
(should (local-variable-p 'remote-null-device))
;; The proper variable values are set. The settings from
;; `remote-ksh' are back.
(should
(string-equal (symbol-value 'remote-shell-file-name) "/bin/ksh"))
(should
(string-equal (symbol-value 'remote-null-device) "/dev/null"))
;; The variable set temporarily is not unbound, again.
(should-not (local-variable-p 'remote-shell-command-switch))))))
(provide 'files-x-tests)
;;; files-x-tests.el ends here