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;;; test-pearl-states.el --- Tests for pearl state management -*- 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 workflow-state fetching, state name -> id resolution, and the
;; two state-update entry points. Covers the guard that skips the mutation
;; when the state name doesn't resolve, so no request fires with a null id.
;;; Code:
(require 'test-bootstrap (expand-file-name "test-bootstrap.el"))
(require 'testutil-request (expand-file-name "testutil-request.el"))
(require 'cl-lib)
;;; pearl-get-states-async
(ert-deftest test-pearl-get-states-async-parses-nodes ()
"Workflow states are unwrapped and passed to the callback."
(let ((got nil))
(testutil-linear-with-response
'((data (team (states (nodes . (((id . "s1") (name . "Todo"))
((id . "s2") (name . "Done"))))))))
(pearl-get-states-async "team-1" (lambda (states) (setq got states))))
(should (= 2 (length got)))
(should (string-equal "s1" (cdr (assoc 'id (car got)))))))
;;; pearl--get-state-id-by-name
(ert-deftest test-pearl-get-state-id-by-name-found ()
"A state whose name matches (case-insensitively) resolves to its id."
(let ((pearl--cache-states nil))
(testutil-linear-with-response
'((data (team (states (nodes . (((id . "s1") (name . "Todo"))
((id . "s2") (name . "Done"))))))))
(should (string-equal "s2" (pearl--get-state-id-by-name "done" "team-1"))))))
(ert-deftest test-pearl-get-state-id-by-name-not-found ()
"A state name absent from the team resolves to nil."
(let ((pearl--cache-states nil))
(testutil-linear-with-response
'((data (team (states (nodes . (((id . "s1") (name . "Todo"))))))))
(should (null (pearl--get-state-id-by-name "Archived" "team-1"))))))
(ert-deftest test-pearl-state-lookup-caches-per-team ()
"A second lookup for the same team is served from cache, no new request."
(let ((pearl-api-key "test-key")
(pearl--cache-states nil)
(calls 0))
(cl-letf (((symbol-function 'request)
(lambda (_url &rest args)
(setq calls (1+ calls))
(funcall (plist-get args :success)
:data '((data (team (states (nodes . (((id . "s1") (name . "Todo"))
((id . "s2") (name . "Done"))))))))))))
(should (string-equal "s2" (pearl--get-state-id-by-name "Done" "team-1")))
(should (string-equal "s1" (pearl--get-state-id-by-name "Todo" "team-1")))
(should (= 1 calls)))))
;;; pearl-update-issue-state (sync) -- nil-state-id guard
(ert-deftest test-pearl-update-issue-state-nil-state-id-skips-request ()
"When the state name doesn't resolve, no mutation request is fired."
(let ((requested nil)
(pearl-api-key "test-key"))
(cl-letf (((symbol-function 'pearl--get-state-id-by-name) (lambda (_s _t) nil))
((symbol-function 'request) (lambda (&rest _) (setq requested t))))
(pearl-update-issue-state "i-1" "Nonexistent" "team-1")
(should-not requested))))
(ert-deftest test-pearl-update-issue-state-resolved-fires-request ()
"When the state resolves, the mutation request is fired."
(let ((requested nil)
(pearl-api-key "test-key"))
(cl-letf (((symbol-function 'pearl--get-state-id-by-name) (lambda (_s _t) "s2"))
((symbol-function 'request)
(lambda (_url &rest args)
(setq requested t)
(let ((cb (plist-get args :success)))
(when cb (funcall cb :data '((data (issueUpdate (success . t))))))))))
(pearl-update-issue-state "i-1" "Done" "team-1")
(should requested))))
;;; pearl--update-issue-state-async -- nil-state-id guard
(ert-deftest test-pearl-update-issue-state-async-nil-state-id-skips-request ()
"The async update also short-circuits when the state name doesn't resolve."
(let ((requested nil)
(pearl-api-key "test-key"))
(cl-letf (((symbol-function 'pearl--get-state-id-by-name) (lambda (_s _t) nil))
((symbol-function 'request) (lambda (&rest _) (setq requested t))))
(pearl--update-issue-state-async "i-1" "Nonexistent" "team-1")
(should-not requested))))
(ert-deftest test-pearl-update-issue-state-async-success-runs ()
"The async success handler runs on a successful update."
(let ((pearl-api-key "test-key"))
(cl-letf (((symbol-function 'pearl--get-state-id-by-name) (lambda (_s _t) "s2"))
((symbol-function 'request)
(lambda (_url &rest args)
(funcall (plist-get args :success)
:data '((data (issueUpdate (success . t))))))))
(should (progn (pearl--update-issue-state-async "i-1" "Done" "team-1") t)))))
(ert-deftest test-pearl-update-issue-state-async-error-runs ()
"The async error handler runs on a transport error."
(let ((pearl-api-key "test-key"))
(cl-letf (((symbol-function 'pearl--get-state-id-by-name) (lambda (_s _t) "s2"))
((symbol-function 'request)
(lambda (_url &rest args)
(funcall (plist-get args :error)
:error-thrown "boom"
:response (make-request-response :status-code 500)
:data nil))))
(should (progn (pearl--update-issue-state-async "i-1" "Done" "team-1") t)))))
(provide 'test-pearl-states)
;;; test-pearl-states.el ends here
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