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;;; test-config-utilities--recompile-emacs-home.el --- Tests for cj/--recompile-emacs-home -*- lexical-binding: t; -*-
;;; Commentary:
;; Tests for `cj/--recompile-emacs-home'. The internal takes DIR and
;; an optional NATIVE-P flag, deletes every .elc/.eln file under DIR,
;; removes the eln (native) or elc (byte) cache directory if present,
;; then triggers the appropriate recompile. Returns \\='native or
;; \\='byte.
;;
;; Tests run against real temp directories. Only the actual compile
;; invocations (native-compile-async, byte-recompile-directory) are
;; mocked at the boundary so the test suite doesn't spin up real
;; compilation jobs.
;;; Code:
(require 'ert)
(require 'cl-lib)
(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
(require 'config-utilities)
(defvar comp-async-report-warnings-errors)
(defun test-config-utilities--make-recompile-fixture ()
"Create a temp dir with a mix of .el / .elc / .eln files for recompile tests.
Returns the temp dir path."
(let ((dir (make-temp-file "recompile-test-" t)))
(dolist (rel '("a.el" "a.elc" "b.el" "b.eln" "sub/c.el" "sub/c.elc"))
(let ((full (expand-file-name rel dir)))
(let ((parent (file-name-directory full)))
(when (and parent (not (file-exists-p parent)))
(make-directory parent t)))
(with-temp-file full (insert ""))))
dir))
(ert-deftest test-config-utilities-recompile-native-path-returns-native ()
"Normal: NATIVE-P non-nil dispatches to native-compile-async and returns 'native."
(let* ((dir (test-config-utilities--make-recompile-fixture))
(native-called-with nil)
(byte-called nil))
(unwind-protect
(cl-letf (((symbol-function 'native-compile-async)
(lambda (target &rest _) (setq native-called-with target)))
((symbol-function 'byte-recompile-directory)
(lambda (&rest _) (setq byte-called t))))
(let ((result (cj/--recompile-emacs-home dir t)))
(should (eq result 'native))
(should (equal native-called-with dir))
(should-not byte-called)))
(delete-directory dir t))))
(ert-deftest test-config-utilities-recompile-byte-path-returns-byte ()
"Normal: NATIVE-P nil dispatches to byte-recompile-directory and returns 'byte."
(let* ((dir (test-config-utilities--make-recompile-fixture))
(byte-called-with nil)
(native-called nil))
(unwind-protect
(cl-letf (((symbol-function 'byte-recompile-directory)
(lambda (target &rest _) (setq byte-called-with target)))
((symbol-function 'native-compile-async)
(lambda (&rest _) (setq native-called t))))
(let ((result (cj/--recompile-emacs-home dir nil)))
(should (eq result 'byte))
(should (equal byte-called-with dir))
(should-not native-called)))
(delete-directory dir t))))
(ert-deftest test-config-utilities-recompile-deletes-all-compiled-files-recursively ()
"Normal: every .elc and .eln under DIR (including subdirs) is deleted before compile."
(let ((dir (test-config-utilities--make-recompile-fixture)))
(unwind-protect
(cl-letf (((symbol-function 'native-compile-async) (lambda (&rest _) nil))
((symbol-function 'byte-recompile-directory) (lambda (&rest _) nil)))
(cj/--recompile-emacs-home dir nil)
(should (file-exists-p (expand-file-name "a.el" dir)))
(should (file-exists-p (expand-file-name "b.el" dir)))
(should (file-exists-p (expand-file-name "sub/c.el" dir)))
(should-not (file-exists-p (expand-file-name "a.elc" dir)))
(should-not (file-exists-p (expand-file-name "b.eln" dir)))
(should-not (file-exists-p (expand-file-name "sub/c.elc" dir))))
(delete-directory dir t))))
(ert-deftest test-config-utilities-recompile-removes-eln-dir-on-native-path ()
"Boundary: the native path removes the eln cache directory when present."
(let ((dir (test-config-utilities--make-recompile-fixture))
(eln-dir nil))
(unwind-protect
(progn
(setq eln-dir (expand-file-name "eln" dir))
(make-directory eln-dir)
(with-temp-file (expand-file-name "stale.eln" eln-dir) (insert ""))
(cl-letf (((symbol-function 'native-compile-async) (lambda (&rest _) nil)))
(cj/--recompile-emacs-home dir t))
(should-not (file-exists-p eln-dir)))
(delete-directory dir t))))
(ert-deftest test-config-utilities-recompile-removes-elc-dir-on-byte-path ()
"Boundary: the byte path removes the elc cache directory when present."
(let ((dir (test-config-utilities--make-recompile-fixture))
(elc-dir nil))
(unwind-protect
(progn
(setq elc-dir (expand-file-name "elc" dir))
(make-directory elc-dir)
(with-temp-file (expand-file-name "stale.elc" elc-dir) (insert ""))
(cl-letf (((symbol-function 'byte-recompile-directory) (lambda (&rest _) nil)))
(cj/--recompile-emacs-home dir nil))
(should-not (file-exists-p elc-dir)))
(delete-directory dir t))))
(ert-deftest test-config-utilities-recompile-cache-dir-absent-no-error ()
"Boundary: missing eln/elc cache directory is not an error."
(let ((dir (test-config-utilities--make-recompile-fixture)))
(unwind-protect
(cl-letf (((symbol-function 'native-compile-async) (lambda (&rest _) nil)))
;; No eln/elc subdir created; should still succeed.
(should (eq 'native (cj/--recompile-emacs-home dir t))))
(delete-directory dir t))))
(provide 'test-config-utilities--recompile-emacs-home)
;;; test-config-utilities--recompile-emacs-home.el ends here
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