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;;; em-alias-tests.el --- em-alias test suite -*- lexical-binding:t -*-
;; Copyright (C) 2022-2026 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Tests for Eshell's alias module.
;;; Code:
(require 'ert)
(require 'ert-x)
(require 'esh-mode)
(require 'eshell)
(require 'em-alias)
(require 'eshell-tests-helpers
(ert-resource-file "eshell-tests-helpers"))
;;; Tests:
(ert-deftest em-alias-test/simple-alias ()
"Test a simple alias with no arguments"
(with-temp-eshell
(eshell-insert-command "alias say-hi 'echo hi'")
(eshell-match-command-output "say-hi" "hi\n")
(eshell-match-command-output "say-hi bye" "hi\n")))
(ert-deftest em-alias-test/alias-arg-vars ()
"Test alias with $0, $1, ... variables"
(with-temp-eshell
(eshell-insert-command "alias show-args 'printnl $0 \"$1 $2\"'")
(eshell-match-command-output "show-args one two" "show-args\none two\n")))
(ert-deftest em-alias-test/alias-arg-vars-indices ()
"Test alias with $1, $2, ... variables using indices"
(with-temp-eshell
(eshell-insert-command "alias funny-sum '+ $1[0] $2[1]'")
(eshell-match-command-output "funny-sum (list 1 2) (list 3 4)"
"5\n")))
(ert-deftest em-alias-test/alias-arg-vars-split-indices ()
"Test alias with $0, $1, ... variables using split indices"
(with-temp-eshell
(eshell-insert-command "alias my-prefix 'echo $0[- 0]'")
(eshell-match-command-output "my-prefix"
"my\n")
(eshell-insert-command "alias funny-sum '+ $1[: 0] $2[: 1]'")
(eshell-match-command-output "funny-sum 1:2 3:4"
"5\n")))
(ert-deftest em-alias-test/alias-all-args-var ()
"Test alias with the $* variable"
(with-temp-eshell
(eshell-insert-command "alias show-all-args 'printnl $*'")
(eshell-match-command-output "show-all-args" "\\`\\'")
(eshell-match-command-output "show-all-args a" "a\n")
(eshell-match-command-output "show-all-args a b c" "a\nb\nc\n")))
(ert-deftest em-alias-test/alias-all-args-var-splice ()
"Test alias with splicing the $* variable"
(with-temp-eshell
(eshell-insert-command "alias show-all-args 'echo args: $@*'")
(eshell-match-command-output "show-all-args" "args:\n")
(eshell-match-command-output "show-all-args a" "(\"args:\" \"a\")\n")
(eshell-match-command-output "show-all-args a b c"
"(\"args:\" \"a\" \"b\" \"c\")\n")))
(ert-deftest em-alias-test/alias-all-args-var-indices ()
"Test alias with the $* variable using indices"
(with-temp-eshell
(eshell-insert-command "alias add-pair '+ $*[0] $*[1]'")
(eshell-match-command-output "add-pair 1 2" "3\n")))
(ert-deftest em-alias-test/alias-all-args-var-split-indices ()
"Test alias with the $* variable using split indices"
(with-temp-eshell
(eshell-insert-command "alias add-funny-pair '+ $*[0][: 0] $*[1][: 1]'")
(eshell-match-command-output "add-funny-pair 1:2 3:4" "5\n")))
(ert-deftest em-alias-test/alias-list-is-sorted ()
"Test that the alias list is sorted on insert"
(with-temp-eshell
(eshell-insert-command "alias aaa 'aaa'")
(eshell-insert-command "alias ccc 'ccc'")
(eshell-insert-command "alias bbb 'bbb'")
(eshell-match-command-output
"alias" "alias aaa aaa\nalias bbb bbb\nalias ccc ccc\n")))
(ert-deftest em-alias-test/alias-load-preserves-order ()
"Test that loading the alias list from disk preserves the ordering"
(let ((aliases (concat "alias aaa echo aaa\n"
"alias ccc echo ccc\n"
"alias bbb echo bbb\n")))
(ert-with-temp-file aliasfile
(with-temp-buffer
(insert aliases)
(write-file aliasfile))
(with-temp-eshell
(setq eshell-aliases-file aliasfile)
(eshell-read-aliases-list)
(eshell-match-command-output "alias" (regexp-quote aliases))))))
(ert-deftest em-alias-test/alias-save-sorted ()
"Test that saving the alias file to disk saves in sorted order"
(ert-with-temp-file aliasfile
(with-temp-eshell
(setq eshell-aliases-file aliasfile)
(eshell-insert-command "alias aaa 'aaa'")
(eshell-insert-command "alias ccc 'ccc'")
(eshell-insert-command "alias bbb 'bbb'")
(should (equal (with-temp-buffer
(insert-file-contents aliasfile)
(buffer-string))
"alias aaa aaa\nalias bbb bbb\nalias ccc ccc\n")))))
;; em-alias-tests.el ends here
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