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;;; em-glob-tests.el --- em-glob 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 glob expansion.
;;; Code:
(require 'ert)
(require 'em-glob)
(require 'eshell-tests-helpers
(expand-file-name "eshell-tests-helpers"
(file-name-directory (or load-file-name
default-directory))))
(defvar eshell-prefer-lisp-functions)
(defmacro with-fake-files (files &rest body)
"Evaluate BODY forms, pretending that FILES exist on the filesystem.
FILES is a list of file names that should be reported as
appropriate by `file-name-all-completions'. Any file name
component ending in \"symlink\" is treated as a symbolic link."
(declare (indent 1))
`(cl-letf (((symbol-function 'file-name-all-completions)
(lambda (file directory)
(cl-assert (string= file ""))
(setq directory (expand-file-name directory))
`("./" "../"
,@(delete-dups
(remq nil
(mapcar
(lambda (file)
(setq file (expand-file-name file))
(when (string-prefix-p directory file)
(replace-regexp-in-string
"/.*" "/"
(substring file (length directory)))))
,files))))))
((symbol-function 'file-symlink-p)
(lambda (file)
(string-suffix-p "symlink" file))))
,@body))
;;; Tests:
(ert-deftest em-glob-test/expand/splice-results ()
"Test that globs are spliced into the argument list when
`eshell-glob-splice-results' is non-nil."
(let ((eshell-prefer-lisp-functions t)
(eshell-glob-splice-results t))
(with-fake-files '("a.el" "b.el" "c.txt")
;; Ensure the default expansion splices the glob.
(eshell-command-result-equal "list *.el" '("a.el" "b.el"))
(eshell-command-result-equal "list *.txt" '("c.txt"))
(eshell-command-result-equal "list *.no" '("*.no")))))
(ert-deftest em-glob-test/expand/no-splice-results ()
"Test that globs are treated as lists when
`eshell-glob-splice-results' is nil."
(let ((eshell-prefer-lisp-functions t)
(eshell-glob-splice-results nil))
(with-fake-files '("a.el" "b.el" "c.txt")
;; Ensure the default expansion splices the glob.
(eshell-command-result-equal "list *.el" '(("a.el" "b.el")))
(eshell-command-result-equal "list *.txt" '(("c.txt")))
;; The no-matches case is special here: the glob is just the
;; string, not the list of results.
(eshell-command-result-equal "list *.no" '("*.no")))))
(ert-deftest em-glob-test/expand/explicitly-splice-results ()
"Test explicitly splicing globs works the same no matter the
value of `eshell-glob-splice-results'."
(let ((eshell-prefer-lisp-functions t))
(dolist (eshell-glob-splice-results '(nil t))
(ert-info ((format "eshell-glob-splice-results: %s"
eshell-glob-splice-results))
(with-fake-files '("a.el" "b.el" "c.txt")
(eshell-command-result-equal "list $@{listify *.el}"
'("a.el" "b.el"))
(eshell-command-result-equal "list $@{listify *.txt}"
'("c.txt"))
(eshell-command-result-equal "list $@{listify *.no}"
'("*.no")))))))
(ert-deftest em-glob-test/expand/explicitly-listify-results ()
"Test explicitly listifying globs works the same no matter the
value of `eshell-glob-splice-results'."
(let ((eshell-prefer-lisp-functions t))
(dolist (eshell-glob-splice-results '(nil t))
(ert-info ((format "eshell-glob-splice-results: %s"
eshell-glob-splice-results))
(with-fake-files '("a.el" "b.el" "c.txt")
(eshell-command-result-equal "list ${listify *.el}"
'(("a.el" "b.el")))
(eshell-command-result-equal "list ${listify *.txt}"
'(("c.txt")))
(eshell-command-result-equal "list ${listify *.no}"
'(("*.no"))))))))
(ert-deftest em-glob-test/match-any-string ()
"Test that \"*\" pattern matches any string."
(with-fake-files '("a.el" "b.el" "c.txt" "dir/a.el")
(should (equal (eshell-extended-glob "*.el")
'("a.el" "b.el")))))
(ert-deftest em-glob-test/match-any-directory ()
"Test that \"*/\" pattern matches any directory."
(with-fake-files '("a.el" "b.el" "dir/a.el" "dir/sub/a.el" "symlink/")
(should (equal (eshell-extended-glob "*/")
'("dir/" "symlink/")))))
(ert-deftest em-glob-test/match-any-character ()
"Test that \"?\" pattern matches any character."
(with-fake-files '("a.el" "b.el" "ccc.el" "d.txt" "dir/a.el")
(should (equal (eshell-extended-glob "?.el")
'("a.el" "b.el")))))
(ert-deftest em-glob-test/match-recursive ()
"Test that \"**/\" recursively matches directories."
(with-fake-files '("a.el" "b.el" "ccc.el" "d.txt" "dir/a.el" "dir/sub/a.el"
"dir/symlink/a.el" "symlink/a.el" "symlink/sub/a.el")
(should (equal (eshell-extended-glob "**/a.el")
'("a.el" "dir/a.el" "dir/sub/a.el")))
(should (equal (eshell-extended-glob "**/")
'("dir/" "dir/sub/")))))
(ert-deftest em-glob-test/match-recursive-follow-symlinks ()
"Test that \"***/\" recursively matches directories, following symlinks."
(with-fake-files '("a.el" "b.el" "ccc.el" "d.txt" "dir/a.el" "dir/sub/a.el"
"dir/symlink/a.el" "symlink/a.el" "symlink/sub/a.el")
(should (equal (eshell-extended-glob "***/a.el")
'("a.el" "dir/a.el" "dir/sub/a.el" "dir/symlink/a.el"
"symlink/a.el" "symlink/sub/a.el")))
(should (equal (eshell-extended-glob "***/")
'("dir/" "dir/sub/" "dir/symlink/" "symlink/"
"symlink/sub/")))))
(ert-deftest em-glob-test/match-recursive-mixed ()
"Test combination of \"**/\" and \"***/\"."
(with-fake-files '("dir/a.el" "dir/sub/a.el" "dir/sub2/a.el"
"dir/symlink/a.el" "dir/sub/symlink/a.el" "symlink/a.el"
"symlink/sub/a.el" "symlink/sub/symlink/a.el")
(should (equal (eshell-extended-glob "**/sub/***/a.el")
'("dir/sub/a.el" "dir/sub/symlink/a.el")))
(should (equal (eshell-extended-glob "***/sub/**/a.el")
'("dir/sub/a.el" "symlink/sub/a.el")))))
(ert-deftest em-glob-test/match-character-set-individual ()
"Test \"[...]\" for individual characters."
(with-fake-files '("a.el" "b.el" "c.el" "d.el" "dir/a.el")
(should (equal (eshell-extended-glob "[ab].el")
'("a.el" "b.el")))
(should (equal (eshell-extended-glob "[^ab].el")
'("c.el" "d.el")))))
(ert-deftest em-glob-test/match-character-set-range ()
"Test \"[...]\" for character ranges."
(with-fake-files '("a.el" "b.el" "c.el" "d.el" "dir/a.el")
(should (equal (eshell-extended-glob "[a-c].el")
'("a.el" "b.el" "c.el")))
(should (equal (eshell-extended-glob "[^a-c].el")
'("d.el")))))
(ert-deftest em-glob-test/match-character-set-class ()
"Test \"[...]\" for character classes."
(with-fake-files '("1.el" "a.el" "b.el" "c.el" "dir/a.el")
(should (equal (eshell-extended-glob "[[:alpha:]].el")
'("a.el" "b.el" "c.el")))
(should (equal (eshell-extended-glob "[^[:alpha:]].el")
'("1.el")))))
(ert-deftest em-glob-test/match-character-set-mixed ()
"Test \"[...]\" with multiple kinds of members at once."
(with-fake-files '("1.el" "a.el" "b.el" "c.el" "d.el" "dir/a.el")
(should (equal (eshell-extended-glob "[ac-d[:digit:]].el")
'("1.el" "a.el" "c.el" "d.el")))
(should (equal (eshell-extended-glob "[^ac-d[:digit:]].el")
'("b.el")))))
(ert-deftest em-glob-test/match-group-alternative ()
"Test \"(x|y)\" matches either \"x\" or \"y\"."
(with-fake-files '("em-alias.el" "em-banner.el" "esh-arg.el" "misc.el"
"test/em-xtra.el")
(should (equal (eshell-extended-glob "e(m|sh)-*.el")
'("em-alias.el" "em-banner.el" "esh-arg.el")))))
(ert-deftest em-glob-test/match-n-or-more-characters ()
"Test that \"x#\" and \"x#\" match zero or more instances of \"x\"."
(with-fake-files '("h.el" "ha.el" "hi.el" "hii.el" "dir/hi.el")
(should (equal (eshell-extended-glob "hi#.el")
'("h.el" "hi.el" "hii.el")))
(should (equal (eshell-extended-glob "hi##.el")
'("hi.el" "hii.el")))))
(ert-deftest em-glob-test/match-n-or-more-groups ()
"Test that \"(x)#\" and \"(x)#\" match zero or more instances of \"(x)\"."
(with-fake-files '("h.el" "ha.el" "hi.el" "hii.el" "dir/hi.el")
(should (equal (eshell-extended-glob "hi#.el")
'("h.el" "hi.el" "hii.el")))
(should (equal (eshell-extended-glob "hi##.el")
'("hi.el" "hii.el")))))
(ert-deftest em-glob-test/match-n-or-more-character-sets ()
"Test that \"[x]#\" and \"[x]#\" match zero or more instances of \"[x]\"."
(with-fake-files '("w.el" "wh.el" "wha.el" "whi.el" "whaha.el" "dir/wha.el")
(should (equal (eshell-extended-glob "w[ah]#.el")
'("w.el" "wh.el" "wha.el" "whaha.el")))
(should (equal (eshell-extended-glob "w[ah]##.el")
'("wh.el" "wha.el" "whaha.el")))))
(ert-deftest em-glob-test/match-x-but-not-y ()
"Test that \"x~y\" matches \"x\" but not \"y\"."
(with-fake-files '("1" "12" "123" "42" "dir/1")
(should (equal (eshell-extended-glob "[[:digit:]]##~4?")
'("1" "12" "123")))))
(ert-deftest em-glob-test/match-dot-files ()
"Test that dot files are matched correctly."
(with-fake-files '("foo.el" ".emacs")
(should (equal (eshell-extended-glob ".*")
'("../" "./" ".emacs")))
(let (eshell-glob-include-dot-dot)
(should (equal (eshell-extended-glob ".*")
'(".emacs"))))
(let ((eshell-glob-include-dot-files t))
(should (equal (eshell-extended-glob "*")
'("../" "./" ".emacs" "foo.el")))
(let (eshell-glob-include-dot-dot)
(should (equal (eshell-extended-glob "*")
'(".emacs" "foo.el")))))))
(ert-deftest em-glob-test/no-matches ()
"Test behavior when a glob fails to match any files."
(with-fake-files '("foo.el" "bar.el")
(should (equal (eshell-extended-glob "*.txt")
"*.txt"))
(let ((eshell-glob-splice-results t))
(should (equal (eshell-extended-glob "*.txt")
'("*.txt"))))
(let ((eshell-error-if-no-glob t))
(should-error (eshell-extended-glob "*.txt")))))
;; em-glob-tests.el ends here
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