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guix: emacs-utils: Add emacs-header-parse.

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* guix/build/emacs-utils.scm (emacs-header-parse): New procedure.

* tests/build-emacs-utils.scm ("emacs-header-parse: fetch version",
  "emacs-header-parse: fetch keywords", "emacs-header-parse: fetch
  nonexistent author"): New tests.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Fredrik Salomonsson
2022-06-05 19:51:43 +00:00
committed by Ludovic Courtès
parent f8275916fc
commit c3afbd05bf
2 changed files with 35 additions and 1 deletions
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27
tests/build-emacs-utils.scm
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@@ -28,7 +28,7 @@
(test-begin "build-emacs-utils")
;; Only run the following tests if emacs is present.
(test-skip (if (which "emacs") 0 2))
(test-skip (if (which "emacs") 0 5))
(test-equal "emacs-batch-script: print foo from emacs"
"foo"
@@ -40,4 +40,29 @@
"Lisp error: (wrong-type-argument numberp \"three\")")))
(emacs-batch-script '(mapcar 'number-to-string (list 1 2 "three")))))
(call-with-temporary-directory
(lambda (directory)
(let ((mock-elisp-file (string-append directory "/foo.el")))
(call-with-output-file mock-elisp-file
(lambda (port)
(display ";;; foo --- mock emacs package -*- lexical-binding: t -*-
;; Created: 4 Jun 2022
;; Keywords: lisp test
;; Version: 1.0.0
;;; Commentary:
;;; Code:
;;; foo.el ends here
"
port)))
(test-equal "emacs-header-parse: fetch version"
"1.0.0"
(emacs-header-parse "version" mock-elisp-file))
(test-equal "emacs-header-parse: fetch keywords"
"lisp test"
(emacs-header-parse "keywords" mock-elisp-file))
(test-equal "emacs-header-parse: fetch nonexistent author"
"nil"
(emacs-header-parse "author" mock-elisp-file)))))
(test-end "build-emacs-utils")