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;;; esh-arg-tests.el --- esh-arg test suite -*- lexical-binding:t -*-
;; Copyright (C) 2022-2024 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 argument handling.
;;; Code:
(require 'ert)
(require 'esh-mode)
(require 'eshell)
(require 'eshell-tests-helpers
(expand-file-name "eshell-tests-helpers"
(file-name-directory (or load-file-name
default-directory))))
(defvar eshell-test-value nil)
;;; Tests:
(ert-deftest esh-arg-test/escape/nonspecial ()
"Test that \"\\c\" and \"c\" are equivalent when \"c\" is not a
special character."
(with-temp-eshell
(eshell-match-command-output "echo he\\llo"
"hello\n")))
(ert-deftest esh-arg-test/escape/nonspecial-unicode ()
"Test that \"\\c\" and \"c\" are equivalent when \"c\" is a
unicode character (unicode characters are nonspecial by
definition)."
(with-temp-eshell
(eshell-match-command-output "echo Vid\\éos"
"Vidéos\n")))
(ert-deftest esh-arg-test/escape/special ()
"Test that the backslash is not preserved for escaped special
chars."
(with-temp-eshell
(eshell-match-command-output "echo he\\\\llo"
;; Backslashes are doubled for regexp.
"he\\\\llo\n")))
(ert-deftest esh-arg-test/escape/newline ()
"Test that an escaped newline is equivalent to the empty string.
When newlines are *nonspecial*, an escaped newline should be
treated as just a newline."
(with-temp-eshell
(eshell-match-command-output "echo hi\\\nthere"
"hithere\n")))
(ert-deftest esh-arg-test/escape/newline-conditional ()
"Test invocation of an if/else statement using line continuations."
(let ((eshell-test-value t))
(eshell-command-result-equal
"if $eshell-test-value \\\n{echo yes} \\\n{echo no}"
"yes"))
(let ((eshell-test-value nil))
(eshell-command-result-equal
"if $eshell-test-value \\\n{echo yes} \\\n{echo no}"
"no")))
(ert-deftest esh-arg-test/escape-quoted/nonspecial ()
"Test that the backslash is preserved for escaped nonspecial
chars."
(with-temp-eshell
(eshell-match-command-output "echo \"h\\i\""
;; Backslashes are doubled for regexp.
"h\\\\i\n")))
(ert-deftest esh-arg-test/escape-quoted/special ()
"Test that the backslash is not preserved for escaped special
chars."
(with-temp-eshell
(eshell-match-command-output "echo \"\\\"hi\\\\\""
;; Backslashes are doubled for regexp.
"\\\"hi\\\\\n")))
(ert-deftest esh-arg-test/escape-quoted/newline ()
"Test that an escaped newline is equivalent to the empty string.
When newlines are *nonspecial*, an escaped newline should be
treated literally, as a backslash and a newline."
(with-temp-eshell
(eshell-match-command-output "echo \"hi\\\nthere\""
"hithere\n")))
(ert-deftest esh-arg-test/special-reference/default ()
"Test that \"#<buf>\" refers to the buffer \"buf\"."
(with-temp-buffer
(rename-buffer "my-buffer" t)
(eshell-command-result-equal
(format "echo #<%s>" (buffer-name))
(current-buffer))))
(ert-deftest esh-arg-test/special-reference/buffer ()
"Test that \"#<buffer buf>\" refers to the buffer \"buf\"."
(with-temp-buffer
(rename-buffer "my-buffer" t)
(eshell-command-result-equal
(format "echo #<buffer %s>" (buffer-name))
(current-buffer))))
(ert-deftest esh-arg-test/special-reference/marker ()
"Test that \"#<marker N buf>\" refers to a marker in the buffer \"buf\"."
(with-temp-buffer
(rename-buffer "my-buffer" t)
(insert "hello")
(let ((marker (make-marker)))
(set-marker marker 1 (current-buffer))
(eshell-command-result-equal
(format "echo #<marker 1 %s>" (buffer-name))
marker))))
(ert-deftest esh-arg-test/special-reference/quoted ()
"Test that '#<buffer \"foo bar\">' refers to the buffer \"foo bar\"."
(with-temp-buffer
(rename-buffer "foo bar" t)
(eshell-command-result-equal
(format "echo #<buffer \"%s\">" (buffer-name))
(current-buffer))
(eshell-command-result-equal
(format "echo #<buffer '%s'>" (buffer-name))
(current-buffer))))
(ert-deftest esh-arg-test/special-reference/nested ()
"Test that nested special references work correctly."
(with-temp-buffer
(rename-buffer "my-buffer" t)
(insert "hello")
(let ((marker (make-marker)))
(set-marker marker 1 (current-buffer))
(eshell-command-result-equal
(format "echo #<marker 1 #<%s>>" (buffer-name))
marker)
(eshell-command-result-equal
(format "echo #<marker 1 #<buffer %s>>" (buffer-name))
marker))))
(ert-deftest esh-arg-test/special-reference/var-expansion ()
"Test that variable expansion inside special references works."
(with-temp-buffer
(rename-buffer "my-buffer" t)
(let ((eshell-test-value (buffer-name)))
(eshell-command-result-equal
"echo #<buffer $eshell-test-value>"
(current-buffer))
(eshell-command-result-equal
"echo #<buffer \"$eshell-test-value\">"
(current-buffer)))))
(ert-deftest esh-arg-test/special-reference/lisp-form ()
"Test that Lisp forms inside special references work."
(with-temp-eshell
(let ((marker (make-marker))
eshell-test-value)
(set-marker marker 1 (current-buffer))
(eshell-insert-command
"setq eshell-test-value #<marker 1 (current-buffer)>")
(should (equal eshell-test-value marker))
(eshell-insert-command
"setq eshell-test-value #<marker 1 #<buffer (buffer-name)>>")
(should (equal eshell-test-value marker)))))
(ert-deftest esh-arg-test/special-reference/special-characters ()
"Test that \"#<...>\" works correctly when escaping special characters."
(with-temp-buffer
(rename-buffer "<my buffer>" t)
(let ((escaped-bufname (replace-regexp-in-string
(rx (group (or "\\" "<" ">" space))) "\\\\\\1"
(buffer-name))))
(eshell-command-result-equal
(format "echo #<%s>" escaped-bufname)
(current-buffer))
(eshell-command-result-equal
(format "echo #<buffer %s>" escaped-bufname)
(current-buffer)))))
;; esh-arg-tests.el ends here
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