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;;; test-pearl-single-issue.el --- Tests for the single-issue source -*- 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 single-issue source: `pearl--issue-source' (id/identifier ->
;; source plist), the `#+LINEAR-SOURCE' round-trip for that plist,
;; `pearl--fetch-and-render-issue' (fetch one issue and render it like every
;; other source), and `pearl-open-issue-by-id' (the jump-by-identifier command).
;; The async fetch and the render boundary are stubbed at their seams.
;;; Code:
(require 'test-bootstrap (expand-file-name "test-bootstrap.el"))
;;; pearl--issue-source
(ert-deftest test-pearl-issue-source-builds-plist ()
"An id + identifier builds a `:type issue' source named by the identifier."
(let ((s (pearl--issue-source "u1" "ENG-7")))
(should (eq 'issue (plist-get s :type)))
(should (string= "u1" (plist-get s :id)))
(should (string= "ENG-7" (plist-get s :identifier)))
(should (string= "ENG-7" (plist-get s :name)))))
(ert-deftest test-pearl-issue-source-name-falls-back-to-id ()
"With no identifier the source name falls back to the id, never nil."
(let ((s (pearl--issue-source "u1" nil)))
(should (string= "u1" (plist-get s :name)))))
(ert-deftest test-pearl-issue-source-round-trips-through-header ()
"The issue source survives `#+LINEAR-SOURCE' serialization and read-back."
(let* ((s (pearl--issue-source "u1" "ENG-7"))
(back (car (read-from-string (pearl--linear-source-string s)))))
(should (equal s back))))
;;; pearl--fetch-and-render-issue
(ert-deftest test-pearl-fetch-and-render-issue-renders-one ()
"A fetched node renders through the shared query-result boundary as one issue,
tagged with an issue source built from the node's own id and identifier."
(let ((node '((id . "u1") (identifier . "ENG-7") (title . "A bug")))
captured)
(cl-letf (((symbol-function 'pearl--fetch-issue-async)
(lambda (_ref cb) (funcall cb node)))
((symbol-function 'pearl--render-query-result)
(lambda (result source) (setq captured (list result source)))))
(pearl--fetch-and-render-issue "ENG-7")
(should captured)
(let ((result (nth 0 captured))
(source (nth 1 captured)))
(should (equal (list node) (pearl--query-result-issues result)))
(should (eq 'issue (plist-get source :type)))
(should (string= "u1" (plist-get source :id)))
(should (string= "ENG-7" (plist-get source :identifier)))))))
(ert-deftest test-pearl-fetch-and-render-issue-missing-does-not-render ()
"A `:missing' result reports and renders nothing (no buffer rewrite)."
(let (rendered)
(cl-letf (((symbol-function 'pearl--fetch-issue-async)
(lambda (_ref cb) (funcall cb :missing)))
((symbol-function 'pearl--render-query-result)
(lambda (&rest _) (setq rendered t)))
((symbol-function 'message) (lambda (&rest _) nil)))
(pearl--fetch-and-render-issue "ENG-404")
(should-not rendered))))
(ert-deftest test-pearl-fetch-and-render-issue-error-does-not-render ()
"An `:error' result reports and renders nothing."
(let (rendered)
(cl-letf (((symbol-function 'pearl--fetch-issue-async)
(lambda (_ref cb) (funcall cb :error)))
((symbol-function 'pearl--render-query-result)
(lambda (&rest _) (setq rendered t)))
((symbol-function 'message) (lambda (&rest _) nil)))
(pearl--fetch-and-render-issue "ENG-7")
(should-not rendered))))
;;; pearl-open-issue-by-id
(ert-deftest test-pearl-open-issue-by-id-forwards-trimmed-ref ()
"The command trims the typed ref and forwards it to the fetch/render path."
(let (got)
(cl-letf (((symbol-function 'pearl--require-account-context) #'ignore)
((symbol-function 'pearl--progress) (lambda (&rest _) nil))
((symbol-function 'pearl--fetch-and-render-issue)
(lambda (ref) (setq got ref))))
(pearl-open-issue-by-id " ENG-7 ")
(should (string= "ENG-7" got)))))
(ert-deftest test-pearl-open-issue-by-id-rejects-empty ()
"An empty/whitespace identifier is a `user-error', not a fetch."
(let (fetched)
(cl-letf (((symbol-function 'pearl--require-account-context) #'ignore)
((symbol-function 'pearl--fetch-and-render-issue)
(lambda (&rest _) (setq fetched t))))
(should-error (pearl-open-issue-by-id " ") :type 'user-error)
(should-not fetched))))
(provide 'test-pearl-single-issue)
;;; test-pearl-single-issue.el ends here
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