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Cover struct.el

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Add some basic test coverage to struct.el.
This commit is contained in:
William Carroll 2020-01-09 13:43:37 +00:00
parent b52d210b9b
commit 1399eae319
1 changed files with 20 additions and 3 deletions
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23
configs/shared/.emacs.d/wpc/struct.el
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@ -24,9 +24,12 @@
(require 'dash)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Functions
;; Library
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defvar struct/enable-tests? t
"When t, run the test suite defined herein.")
(defmacro struct/update (type field f xs)
"Apply F to FIELD in XS, which is a struct of TYPE.
This is immutable."
@ -64,8 +67,22 @@ This is an adapter interface to `setf'."
(string/prepend (string/concat (symbol-name type) "-"))
intern)))
`(progn
(setf (,accessor xs) ,x)
xs)))
(setf (,accessor ,xs) ,x)
,xs)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Tests
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(when struct/enable-tests?
(cl-defstruct dummy name age)
(defvar test-dummy (make-dummy :name "Roofus" :age 19))
(struct/set! dummy name "Doofus" test-dummy)
(prelude/assert (string= "Doofus" (dummy-name test-dummy)))
(let ((result (struct/set dummy name "Shoofus" test-dummy)))
;; Test the immutability of `struct/set'
(prelude/assert (string= "Doofus" (dummy-name test-dummy)))
(prelude/assert (string= "Shoofus" (dummy-name result)))))
(provide 'struct)
;;; struct.el ends here