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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
;;; test-duet-transfer.el --- Tests for transfer-spec + planning -*- lexical-binding: t; -*-
;; Copyright (C) 2026 Craig Jennings
;; Author: Craig Jennings <c@cjennings.net>
;; This program 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.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Tests for the endpoint matrix (route + backend selection), transfer-spec
;; assembly, and the two pure planners (conflict resolution and move
;; sequencing). Selection tests register the built-in rsync/TRAMP backends
;; into a let-bound registry so they run against a known, isolated set. The
;; planners are pure: existence and conflict-resolution decisions are injected
;; as functions, so no test touches a real file.
;;; Code:
(require 'test-bootstrap (expand-file-name "test-bootstrap.el"))
(defmacro test-duet-transfer--with-builtins (&rest body)
"Run BODY with only the built-in backends registered, isolated."
`(let ((duet--backend-registry nil))
(duet--register-builtin-backends)
,@body))
(defun test-duet-transfer--classify (path)
"Classify PATH; convenience wrapper for route tests."
(duet--classify-path path))
;;; Route determination — every matrix cell
(ert-deftest test-duet-transfer-route-local-to-local ()
(should (eq :local
(duet--transfer-route (test-duet-transfer--classify "/tmp/a")
(test-duet-transfer--classify "/tmp/b")
nil))))
(ert-deftest test-duet-transfer-route-local-to-remote ()
(should (eq :local-remote
(duet--transfer-route (test-duet-transfer--classify "/tmp/a")
(test-duet-transfer--classify "/ssh:host:/b")
nil)))
(should (eq :local-remote
(duet--transfer-route (test-duet-transfer--classify "/ssh:host:/a")
(test-duet-transfer--classify "/tmp/b")
nil))))
(ert-deftest test-duet-transfer-route-remote-same-host ()
(should (eq :remote-same-host
(duet--transfer-route (test-duet-transfer--classify "/ssh:user@host:/a")
(test-duet-transfer--classify "/ssh:user@host:/b")
nil))))
(ert-deftest test-duet-transfer-route-remote-different-host-defaults-roundtrip ()
(should (eq :remote-roundtrip
(duet--transfer-route (test-duet-transfer--classify "/ssh:hostA:/a")
(test-duet-transfer--classify "/ssh:hostB:/b")
nil))))
(ert-deftest test-duet-transfer-route-remote-different-host-direct-only-on-override ()
(should (eq :remote-direct
(duet--transfer-route (test-duet-transfer--classify "/ssh:hostA:/a")
(test-duet-transfer--classify "/ssh:hostB:/b")
'(:direct-remote-to-remote t)))))
;;; Backend selection — the matrix
(ert-deftest test-duet-transfer-selects-rsync-for-local-pair ()
(test-duet-transfer--with-builtins
(should (eq 'rsync
(duet-backend-name
(duet--select-backend (test-duet-transfer--classify "/tmp/a")
(test-duet-transfer--classify "/tmp/b")))))))
(ert-deftest test-duet-transfer-selects-rsync-for-local-ssh-pair ()
(test-duet-transfer--with-builtins
(should (eq 'rsync
(duet-backend-name
(duet--select-backend (test-duet-transfer--classify "/tmp/a")
(test-duet-transfer--classify "/ssh:host:/b")))))))
(ert-deftest test-duet-transfer-falls-back-to-tramp-for-non-ssh-method ()
"An FTP endpoint is not ssh-reachable, so rsync declines and TRAMP wins."
(test-duet-transfer--with-builtins
(should (eq 'tramp
(duet-backend-name
(duet--select-backend (test-duet-transfer--classify "/tmp/a")
(test-duet-transfer--classify "/ftp:host:/b")))))))
;;; Transfer-spec assembly
(ert-deftest test-duet-transfer-spec-local-copy-shape ()
"A local copy spec names the rsync backend, the local route, and an argv."
(test-duet-transfer--with-builtins
(let ((spec (duet--transfer-spec '("/tmp/a/file.txt") "/tmp/b" nil)))
(should (eq 'rsync (plist-get spec :backend)))
(should (eq :local (plist-get spec :route)))
(should (equal '("/tmp/a/file.txt") (plist-get spec :sources)))
(should (equal "/tmp/b" (plist-get spec :destination-directory)))
(should (equal "rsync" (car (plist-get spec :argv))))
(should (member "/tmp/a/file.txt" (plist-get spec :argv)))
(should (eq t (plist-get spec :async))))))
(ert-deftest test-duet-transfer-spec-carries-route-for-remote ()
(test-duet-transfer--with-builtins
(let ((spec (duet--transfer-spec '("/tmp/a/file.txt") "/ssh:host:/b" nil)))
(should (eq 'rsync (plist-get spec :backend)))
(should (eq :local-remote (plist-get spec :route))))))
;;; Conflict planning — pure, prompt-free
(ert-deftest test-duet-plan-conflicts-no-collisions-all-copy ()
"With nothing at the destination, every item plans a plain copy."
(let ((plan (duet--plan-conflicts '(("/a/x" . "/b/x") ("/a/y" . "/b/y"))
(lambda (_d) nil)
(lambda (_i) (error "resolver must not be called")))))
(should (cl-every (lambda (e) (eq 'copy (plist-get e :action))) plan))))
(ert-deftest test-duet-plan-conflicts-resolver-skip-and-overwrite ()
"The resolver's action is recorded for each colliding item."
(let ((plan (duet--plan-conflicts '(("/a/x" . "/b/x"))
(lambda (_d) t)
(lambda (_i) 'skip))))
(should (eq 'skip (plist-get (car plan) :action)))))
(ert-deftest test-duet-plan-conflicts-rename-computes-free-name ()
"A rename action computes a destination name the existence check reports free."
(let* ((taken '("/b/file.txt" "/b/file (1).txt"))
(plan (duet--plan-conflicts '(("/a/file.txt" . "/b/file.txt"))
(lambda (d) (member d taken))
(lambda (_i) 'rename))))
(should (eq 'rename (plist-get (car plan) :action)))
(should (equal "file (2).txt" (plist-get (car plan) :new-name)))))
(ert-deftest test-duet-plan-conflicts-apply-to-all ()
"An (action . all) resolution applies to every remaining collision unprompted."
(let ((calls 0))
(let ((plan (duet--plan-conflicts
'(("/a/x" . "/b/x") ("/a/y" . "/b/y") ("/a/z" . "/b/z"))
(lambda (_d) t)
(lambda (_i) (setq calls (1+ calls)) '(skip . all)))))
(should (= 1 calls))
(should (cl-every (lambda (e) (eq 'skip (plist-get e :action))) plan)))))
;;; Move planning — delete only after copy success
(ert-deftest test-duet-plan-move-pairs-copy-then-gated-delete ()
"Each source gets a copy step and a delete step gated on its copy success."
(let ((plan (duet--plan-move '("/a/x" "/a/y"))))
(should (= 4 (length plan)))
(dolist (step plan)
(when (eq 'delete (plist-get step :op))
(should (eq 'copy-success (plist-get step :gate)))))))
(ert-deftest test-duet-plan-move-no-ungated-delete ()
"No delete step is ever emitted without the copy-success gate."
(let ((plan (duet--plan-move '("/a/x" "/a/y" "/a/z"))))
(should-not (cl-some (lambda (s) (and (eq 'delete (plist-get s :op))
(not (plist-get s :gate))))
plan))))
(provide 'test-duet-transfer)
;;; test-duet-transfer.el ends here
|
