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;;; test-wttrin--update-layout.el --- Auto-fit gating -*- lexical-binding: t; -*-
;; Copyright (C) 2024-2026 Craig Jennings
;;; Commentary:
;; Auto-fit must not size the transient "Loading..." placeholder to fill the
;; window; it runs only once real weather has rendered.
;;; Code:
(require 'ert)
(require 'cl-lib)
(require 'wttrin)
(require 'testutil-wttrin)
(ert-deftest test-wttrin--update-layout-error-skips-fit-on-placeholder ()
"Error: with auto-fit on, the loading placeholder (weather not rendered) is
not auto-fitted; the fit runs only after weather renders."
(let ((buf (get-buffer-create "*wttrin-layout-test*"))
(fit-calls 0))
(unwind-protect
(save-window-excursion
(cl-letf (((symbol-function 'wttrin--apply-fit-font)
(lambda (&rest _) (setq fit-calls (1+ fit-calls))))
((symbol-function 'wttrin--center-buffer) #'ignore))
(with-current-buffer buf (insert "Loading..."))
(set-window-buffer (selected-window) buf)
(with-current-buffer buf
(let ((wttrin-auto-fit-font t))
(setq-local wttrin--weather-rendered nil)
(wttrin--update-layout)
(should (= 0 fit-calls))
(setq-local wttrin--weather-rendered t)
(wttrin--update-layout)
(should (= 1 fit-calls))))))
(kill-buffer buf))))
(provide 'test-wttrin--update-layout)
;;; test-wttrin--update-layout.el ends here
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