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;;; test-pearl-reverse-compile.el --- Tests for copy-down reverse-compile -*- 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:
;; Phase 6: `pearl--reverse-compile-issue-filter' inverts Linear's filterData
;; (json-read shaped) back to a Pearl authoring plist. Round-trips use the
;; build->encode->read bridge so the input matches production shape, and assert
;; the reversed plist compiles to the SAME Linear filter (order- and
;; canonicalization-robust). Normalize tests feed hand-built and/or trees like
;; the real probe samples. Refusal tests cover everything outside the model.
;;; Code:
(require 'test-bootstrap (expand-file-name "test-bootstrap.el"))
(require 'json)
(defun test-pearl-rc--roundtrip (plist)
"Build PLIST, json round-trip it to production shape, and reverse-compile."
(pearl--reverse-compile-issue-filter
(json-read-from-string (json-encode (pearl--build-issue-filter plist)))))
(defmacro test-pearl-rc--should-roundtrip (plist)
"Assert PLIST reverse-compiles to a plist that rebuilds the same Linear filter."
`(let ((result (test-pearl-rc--roundtrip ,plist)))
(should (eq 'ok (car result)))
(should (equal (pearl--build-issue-filter (cdr result))
(pearl--build-issue-filter ,plist)))))
;;; round-trips, per dimension
(ert-deftest test-pearl-rc-roundtrip-assignee-me ()
(test-pearl-rc--should-roundtrip '(:assignee :me)))
(ert-deftest test-pearl-rc-roundtrip-assignee-id ()
(test-pearl-rc--should-roundtrip '(:assignee-id "user-1")))
(ert-deftest test-pearl-rc-roundtrip-assignee-email-legacy ()
(test-pearl-rc--should-roundtrip '(:assignee "a@b.com")))
(ert-deftest test-pearl-rc-roundtrip-state-name ()
(test-pearl-rc--should-roundtrip '(:state "In Progress")))
(ert-deftest test-pearl-rc-roundtrip-state-name-list ()
"A multi-state :state round-trips (state.name.in with several names)."
(let ((r (test-pearl-rc--roundtrip '(:state ("Todo" "In Review")))))
(should (eq 'ok (car r)))
(should (equal (cdr r) '(:state ("Todo" "In Review"))))))
(ert-deftest test-pearl-rc-state-name-in-many-to-list ()
"state.name.in with several names reverse-compiles to a list :state."
(should (equal (test-pearl-rc--from-json
"{\"state\":{\"name\":{\"in\":[\"Todo\",\"In Review\"]}}}")
'(ok :state ("Todo" "In Review")))))
(ert-deftest test-pearl-rc-state-name-in-one-to-scalar ()
"state.name.in with one name normalizes to a scalar :state."
(should (equal (test-pearl-rc--from-json
"{\"state\":{\"name\":{\"in\":[\"Todo\"]}}}")
'(ok :state "Todo"))))
(ert-deftest test-pearl-rc-roundtrip-state-type-single ()
(let ((r (test-pearl-rc--roundtrip '(:state-type "started"))))
(should (eq 'ok (car r)))
(should (equal (cdr r) '(:state-type "started")))))
(ert-deftest test-pearl-rc-roundtrip-state-type-list ()
(let ((r (test-pearl-rc--roundtrip '(:state-type ("started" "unstarted")))))
(should (eq 'ok (car r)))
(should (equal (cdr r) '(:state-type ("started" "unstarted"))))))
(ert-deftest test-pearl-rc-roundtrip-open ()
(let ((r (test-pearl-rc--roundtrip '(:open t))))
(should (eq 'ok (car r)))
(should (equal (cdr r) '(:open t)))))
(ert-deftest test-pearl-rc-roundtrip-open-with-project ()
(test-pearl-rc--should-roundtrip '(:project "proj-9" :open t)))
(ert-deftest test-pearl-rc-roundtrip-project-team-cycle ()
(test-pearl-rc--should-roundtrip '(:project "P" :team "ENG" :cycle "C")))
(ert-deftest test-pearl-rc-roundtrip-labels-names ()
(test-pearl-rc--should-roundtrip '(:labels ("bug" "p1"))))
(ert-deftest test-pearl-rc-roundtrip-label-id ()
(test-pearl-rc--should-roundtrip '(:label-id "label-1")))
(ert-deftest test-pearl-rc-roundtrip-priority-int ()
(let ((r (test-pearl-rc--roundtrip '(:priority 2))))
(should (equal (cdr r) '(:priority 2)))))
(ert-deftest test-pearl-rc-roundtrip-priority-symbol-canonicalizes ()
"A symbol-authored priority reverse-compiles to its canonical integer."
(let ((r (test-pearl-rc--roundtrip '(:priority high))))
(should (eq 'ok (car r)))
(should (equal (cdr r) '(:priority 2)))))
(ert-deftest test-pearl-rc-roundtrip-favorite-derived-open-shapes ()
"The favorite-derived (:project ID :open t) family round-trips."
(test-pearl-rc--should-roundtrip '(:project "P" :open t))
(test-pearl-rc--should-roundtrip '(:label-id "L" :open t))
(test-pearl-rc--should-roundtrip '(:assignee-id "U" :open t)))
;;; normalize from real Linear view-filter trees (probe-shaped JSON)
(defun test-pearl-rc--from-json (json)
"Reverse-compile filterData parsed from JSON string (the production path)."
(pearl--reverse-compile-issue-filter (json-read-from-string json)))
(ert-deftest test-pearl-rc-normalize-and-tree-with-or-wrapped-isme ()
"A top-level `and' with an `or'-wrapped isMe (the real shape) normalizes."
(should (equal (test-pearl-rc--from-json
"{\"and\":[{\"project\":{\"id\":{\"in\":[\"P9\"]}}},\
{\"assignee\":{\"or\":[{\"isMe\":{\"eq\":true}}]}}]}")
'(ok :project "P9" :assignee :me))))
(ert-deftest test-pearl-rc-normalize-state-name-in-single ()
"state.name.in with one element reads as a scalar :state."
(should (equal (test-pearl-rc--from-json
"{\"and\":[{\"state\":{\"name\":{\"in\":[\"Needs Review\"]}}},\
{\"assignee\":{\"or\":[{\"id\":{\"in\":[\"u-1\"]}}]}}]}")
'(ok :state "Needs Review" :assignee-id "u-1"))))
(ert-deftest test-pearl-rc-normalize-empty-filter-refuses ()
"An empty grouping view ({} -> nil) refuses."
(should (eq 'refuse (car (test-pearl-rc--from-json "{}")))))
;;; refusals
(ert-deftest test-pearl-rc-refuses-real-or ()
"A genuine multi-branch assignee OR refuses."
(let ((r (test-pearl-rc--from-json
"{\"and\":[{\"assignee\":{\"or\":[{\"isMe\":{\"eq\":true}},\
{\"id\":{\"eq\":\"u-2\"}}]}}]}")))
(should (eq 'refuse (car r)))
(should (string-match-p "OR" (cdr r)))))
(ert-deftest test-pearl-rc-refuses-label-parent-nested ()
"The Chore-style labels.and[].or[name, parent.name] refuses."
(should (eq 'refuse
(car (test-pearl-rc--from-json
"{\"and\":[{\"labels\":{\"and\":[{\"or\":\
[{\"name\":{\"eq\":\"Chore\"}},{\"parent\":{\"name\":{\"eq\":\"Chore\"}}}]}]}}]}")))))
(ert-deftest test-pearl-rc-refuses-multi-id-labels ()
(let ((r (test-pearl-rc--from-json
"{\"labels\":{\"some\":{\"id\":{\"in\":[\"L1\",\"L2\"]}}}}")))
(should (eq 'refuse (car r)))
(should (string-match-p "several values\\|plural" (cdr r)))))
(ert-deftest test-pearl-rc-refuses-multi-value-project-in ()
(should (eq 'refuse (car (test-pearl-rc--from-json
"{\"project\":{\"id\":{\"in\":[\"P1\",\"P2\"]}}}")))))
(ert-deftest test-pearl-rc-refuses-multi-value-assignee-id ()
(should (eq 'refuse (car (test-pearl-rc--from-json
"{\"assignee\":{\"id\":{\"in\":[\"A\",\"B\"]}}}")))))
(ert-deftest test-pearl-rc-refuses-unmodeled-dimension ()
"A due-date filter (a dimension Pearl doesn't model) refuses by name."
(let ((r (test-pearl-rc--from-json "{\"dueDate\":{\"lt\":\"2026-06-01\"}}")))
(should (eq 'refuse (car r)))
(should (string-match-p "dueDate" (cdr r)))))
(ert-deftest test-pearl-rc-refuses-generic-nin ()
"A state.type.nin that is not Pearl's exact open predicate refuses."
(should (eq 'refuse (car (test-pearl-rc--from-json
"{\"state\":{\"type\":{\"nin\":[\"started\"]}}}")))))
(ert-deftest test-pearl-rc-refuses-priority-out-of-range ()
(should (eq 'refuse (car (test-pearl-rc--from-json
"{\"priority\":{\"eq\":9}}")))))
(ert-deftest test-pearl-rc-refuses-top-level-or ()
(should (eq 'refuse (car (test-pearl-rc--from-json
"{\"or\":[{\"project\":{\"id\":{\"eq\":\"P\"}}},\
{\"team\":{\"key\":{\"eq\":\"ENG\"}}}]}")))))
;;; copy-down command-side: candidate builder + finish
(ert-deftest test-pearl-linear-view-favorites-extracts-views ()
"Only view-kind favorites become copy-down candidates, as (title . id)."
(let ((favs (list (list :kind 'view :title "V1" :id "vid-1")
(list :kind 'project :title "P" :id "pid")
(list :kind 'view :title "V2" :id "vid-2"))))
(should (equal (pearl--linear-view-favorites favs)
'(("V1" . "vid-1") ("V2" . "vid-2"))))))
(ert-deftest test-pearl-save-linear-view-locally-finish-nil-filterdata-errors ()
"A nil filterData (fetch failure / no filter) errors rather than saving."
(cl-letf (((symbol-function 'customize-save-variable) (lambda (&rest _) nil)))
(should-error (pearl--save-linear-view-locally-finish "V" "vid" nil)
:type 'user-error)))
(ert-deftest test-pearl-save-linear-view-locally-finish-refuses-unrepresentable ()
"An OR-filter view refuses with a user-error and saves nothing."
(let ((pearl-local-views nil))
(cl-letf (((symbol-function 'customize-save-variable) (lambda (&rest _) nil)))
(should-error
(pearl--save-linear-view-locally-finish
"OrView" "vid"
(json-read-from-string
"{\"or\":[{\"project\":{\"id\":{\"eq\":\"P\"}}},\
{\"team\":{\"key\":{\"eq\":\"E\"}}}]}"))
:type 'user-error)
(should-not pearl-local-views))))
(ert-deftest test-pearl-save-linear-view-locally-finish-saves-fork ()
"A representable view saves a forked local view: filter reverse-compiled, no
tracking link, provenance recorded, and an independence message."
(let ((pearl-local-views nil) (pearl-accounts nil) (msg nil))
(cl-letf (((symbol-function 'customize-save-variable) (lambda (&rest _) nil))
((symbol-function 'read-string) (lambda (&rest _) "My copy"))
((symbol-function 'message)
(lambda (fmt &rest args) (setq msg (apply #'format fmt args)))))
(pearl--save-linear-view-locally-finish
"Src View" "src-vid"
(json-read-from-string "{\"and\":[{\"project\":{\"id\":{\"in\":[\"P9\"]}}}]}"))
(let ((spec (cdr (assoc "My copy" pearl-local-views))))
(should spec)
(should (equal (plist-get spec :filter) '(:project "P9")))
(should-not (plist-get spec :linear-view-id))
(should (equal (plist-get spec :copied-from-view-id) "src-vid"))
(should (string-match-p "independent local view" msg))))))
(provide 'test-pearl-reverse-compile)
;;; test-pearl-reverse-compile.el ends here
|
