blob: 7f54442ce9998b28f0cbc89e0f4f253e00fe9b29 (
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
59
60
61
62
63
64
65
|
;;; test-external-open-lib-command.el --- Tests for cj/external-open-command -*- lexical-binding: t; -*-
;;; Commentary:
;; Unit tests for `cj/external-open-command' in external-open-lib.el. The
;; function dispatches on host-environment predicates to return the
;; appropriate "open" command: xdg-open on Linux, open on macOS,
;; start on Windows. Returns nil for unsupported hosts (callers that
;; require a command should error on nil with a contextual message).
;;; Code:
(require 'ert)
(require 'cl-lib)
(require 'package)
(setq package-user-dir (expand-file-name "elpa" user-emacs-directory))
(package-initialize)
(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
(require 'external-open-lib)
(defmacro test-eoc--with-host (linux macos windows &rest body)
"Run BODY with env-*-p predicates stubbed to LINUX, MACOS, WINDOWS."
(declare (indent 3))
`(cl-letf (((symbol-function 'env-linux-p) (lambda () ,linux))
((symbol-function 'env-macos-p) (lambda () ,macos))
((symbol-function 'env-windows-p) (lambda () ,windows)))
,@body))
;;; Normal cases
(ert-deftest test-eoc-linux-returns-xdg-open ()
"Normal: Linux host returns \"xdg-open\"."
(test-eoc--with-host t nil nil
(should (string= "xdg-open" (cj/external-open-command)))))
(ert-deftest test-eoc-macos-returns-open ()
"Normal: macOS host returns \"open\"."
(test-eoc--with-host nil t nil
(should (string= "open" (cj/external-open-command)))))
(ert-deftest test-eoc-windows-returns-start ()
"Normal: Windows host returns \"start\"."
(test-eoc--with-host nil nil t
(should (string= "start" (cj/external-open-command)))))
;;; Boundary cases
(ert-deftest test-eoc-dispatch-order-linux-wins ()
"Boundary: Linux check runs first; wins when predicates disagree.
Documents the dispatch order. A real host only returns t from one
of these anyway -- but if something goes wrong, Linux takes priority."
(test-eoc--with-host t t t
(should (string= "xdg-open" (cj/external-open-command)))))
(ert-deftest test-eoc-unsupported-host-returns-nil ()
"Boundary: when no platform predicate returns non-nil, returns nil.
Callers requiring a command must handle the nil case explicitly --
this is a behavior change from the prior `cj/identify-external-open-command'
which signaled an error. The wrapper `cj/xdg-open' converts nil to a
user-error with a clear message."
(test-eoc--with-host nil nil nil
(should-not (cj/external-open-command))))
(provide 'test-external-open-lib-command)
;;; test-external-open-lib-command.el ends here
|
