blob: 58e902c83036fb2e67d914482a93acacd83ab227 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
;;; test-host-environment-match-localtime.el --- Tests for cj/match-localtime-to-zoneinfo -*- lexical-binding: t; -*-
;;; Commentary:
;; Sibling tests cover the predicates and `cj/detect-system-timezone'.
;; `cj/match-localtime-to-zoneinfo' (the file-comparison path that's
;; tried first by detect-system-timezone) was uncovered.
;;
;; The function hits two hard-coded paths (`/etc/localtime' and
;; `/usr/share/zoneinfo'). Stubbing `file-exists-p' / `file-directory-p'
;; via `cl-letf' on a native-comp build of Emacs triggers trampoline
;; install errors, so we let the function touch the real filesystem
;; and only assert on the contract (string-or-nil, string lives under
;; the zoneinfo directory).
;;; Code:
(require 'ert)
(require 'cl-lib)
(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
(require 'host-environment)
;;; cj/match-localtime-to-zoneinfo
(ert-deftest test-host-environment-match-localtime-returns-string-or-nil ()
"Normal: the function returns either a string (a zoneinfo-relative path)
or nil. On any reasonable Linux box `/etc/localtime' is a copy of one
of the files under `/usr/share/zoneinfo', so we expect a string here;
on systems missing either path we still want the function to not
crash, so accept nil as well."
(let ((result (cj/match-localtime-to-zoneinfo)))
(should (or (null result) (stringp result)))
(when (stringp result)
;; The returned path should have its prefix stripped — no leading
;; "/usr/share/zoneinfo/" in the result.
(should-not (string-prefix-p "/usr/share/zoneinfo/" result))
;; And the resolved file under zoneinfo should actually exist.
(should (file-exists-p (expand-file-name result "/usr/share/zoneinfo"))))))
(ert-deftest test-host-environment-match-localtime-result-matches-localtime-bytes ()
"Normal: when the function returns a path, its file content matches
`/etc/localtime' byte-for-byte (that's the function's whole job)."
(skip-unless (and (file-exists-p "/etc/localtime")
(file-directory-p "/usr/share/zoneinfo")))
(let ((result (cj/match-localtime-to-zoneinfo)))
(when (stringp result)
(let ((matched-path (expand-file-name result "/usr/share/zoneinfo"))
(read-bytes
(lambda (p)
(with-temp-buffer
(set-buffer-multibyte nil)
(insert-file-contents-literally p)
(buffer-string)))))
(should (equal (funcall read-bytes "/etc/localtime")
(funcall read-bytes matched-path)))))))
(provide 'test-host-environment-match-localtime)
;;; test-host-environment-match-localtime.el ends here
|
