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;;; test-modeline-config-vc-cache.el --- Tests for modeline VC cache -*- lexical-binding: t; -*-
;;; Commentary:
;; Tests for the custom modeline VC helper behavior. The modeline evaluates
;; often, so expensive VC calls should be cached and remote files should be
;; skipped by default.
;;; Code:
(require 'ert)
(require 'cl-lib)
(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
(require 'modeline-config)
(ert-deftest test-modeline-config-vc-info-caches-per-buffer ()
"Repeated VC info reads in one buffer should reuse the cache."
(let ((cj/modeline-vc-cache-ttl 60)
(backend-calls 0))
(with-temp-buffer
(setq buffer-file-name "/tmp/project/file.el")
(cl-letf (((symbol-function 'float-time)
(lambda (&optional _time) 100.0))
((symbol-function 'file-remote-p)
(lambda (&rest _args) nil))
((symbol-function 'vc-backend)
(lambda (_file) (cl-incf backend-calls) 'Git))
((symbol-function 'vc-working-revision)
(lambda (_file _backend) "main-revision"))
((symbol-function 'vc-git--symbolic-ref)
(lambda (_file) "main"))
((symbol-function 'vc-state)
(lambda (_file _backend) 'edited)))
(should (equal (cj/modeline-vc-info)
'(:branch "main" :state edited)))
(should (equal (cj/modeline-vc-info)
'(:branch "main" :state edited)))
(should (= backend-calls 1))))))
(ert-deftest test-modeline-config-vc-info-refreshes-after-ttl ()
"Expired VC cache entries should be refreshed."
(let ((cj/modeline-vc-cache-ttl 5)
(backend-calls 0)
(times '(100.0 106.0)))
(with-temp-buffer
(setq buffer-file-name "/tmp/project/file.el")
(cl-letf (((symbol-function 'float-time)
(lambda (&optional _time) (or (pop times) 106.0)))
((symbol-function 'file-remote-p)
(lambda (&rest _args) nil))
((symbol-function 'vc-backend)
(lambda (_file) (cl-incf backend-calls) 'Git))
((symbol-function 'vc-working-revision)
(lambda (_file _backend) "main-revision"))
((symbol-function 'vc-git--symbolic-ref)
(lambda (_file) "main"))
((symbol-function 'vc-state)
(lambda (_file _backend) 'up-to-date)))
(should (equal (cj/modeline-vc-info)
'(:branch "main" :state up-to-date)))
(should (equal (cj/modeline-vc-info)
'(:branch "main" :state up-to-date)))
(should (= backend-calls 2))))))
(ert-deftest test-modeline-config-vc-info-skips-remote-files-by-default ()
"Remote files should not call VC unless explicitly enabled."
(let ((backend-calls 0))
(with-temp-buffer
(setq buffer-file-name "/ssh:host:/tmp/project/file.el")
(cl-letf (((symbol-function 'file-remote-p)
(lambda (&rest _args) t))
((symbol-function 'vc-backend)
(lambda (_file) (cl-incf backend-calls) 'Git)))
(should-not (cj/modeline-vc-info))
(should (= backend-calls 0))))))
(ert-deftest test-modeline-config-vc-cache-clear-resets-buffer-cache ()
"Clearing the VC cache should remove buffer-local cached values."
(with-temp-buffer
(setq cj/modeline-vc-cache-key '("/tmp/project/file.el")
cj/modeline-vc-cache-time 100.0
cj/modeline-vc-cache-value '(:branch "main" :state edited))
(cj/modeline-vc-cache-clear)
(should-not cj/modeline-vc-cache-key)
(should-not cj/modeline-vc-cache-time)
(should-not cj/modeline-vc-cache-value)))
(ert-deftest test-modeline-config-vc-render-formats-branch-and-state ()
"VC rendering should keep the branch text and state face metadata."
(cl-letf (((symbol-function 'cj/modeline-string-cut-middle)
(lambda (str) str)))
(let ((rendered (cj/modeline-vc-render '(:branch "feature/cache"
:state edited))))
(should (string-match-p "feature/cache" rendered))
(should (text-property-any 0 (length rendered)
'face 'vc-edited-state rendered))
(should (text-property-any 0 (length rendered)
'mouse-face 'mode-line-highlight rendered)))))
(provide 'test-modeline-config-vc-cache)
;;; test-modeline-config-vc-cache.el ends here
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