diff options
Diffstat (limited to 'test/automated/calc-tests.el')
| -rw-r--r-- | test/automated/calc-tests.el | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/test/automated/calc-tests.el b/test/automated/calc-tests.el index 331e01e4640..d5252ea62a9 100644 --- a/test/automated/calc-tests.el +++ b/test/automated/calc-tests.el @@ -27,6 +27,40 @@ (require 'cl-lib) (require 'ert) (require 'calc) +(require 'calc-ext) +(require 'calc-units) + +;; XXX The order in which calc libraries (in particular calc-units) +;; are loaded influences whether a calc integer in an expression +;; involving units is represented as a lisp integer or a calc float, +;; see bug#19582. Until this will be fixed the following function can +;; be used to compare such calc expressions. +(defun calc-tests-equal (a b) + "Like `equal' but allow for different representations of numbers. +For example: (calc-tests-equal 10 '(float 1 1)) => t. +A and B should be calc expressions." + (cond ((math-numberp a) + (and (math-numberp b) + (math-equal a b))) + ((atom a) + (equal a b)) + ((consp b) + ;; Can't be dotted or circular. + (and (= (length a) (length b)) + (equal (car a) (car b)) + (cl-every #'calc-tests-equal (cdr a) (cdr b)))))) + +(defun calc-tests-simple (fun string &rest args) + "Push STRING on the calc stack, then call FUN and return the new top. +The result is a calc (i.e., lisp) expression, not its string representation. +Also pop the entire stack afterwards. +An existing calc stack is reused, otherwise a new one is created." + (calc-eval string 'push) + (prog1 + (ignore-errors + (apply fun args) + (calc-top-n 1)) + (calc-pop 0))) (ert-deftest test-math-bignum () ;; bug#17556 @@ -34,6 +68,24 @@ (should (math-negp n)) (should (cl-notany #'cl-minusp (cdr n))))) +(ert-deftest test-calc-remove-units () + (should (calc-tests-equal (calc-tests-simple #'calc-remove-units "-1 m") -1))) + +(ert-deftest test-calc-extract-units () + (should (calc-tests-equal (calc-tests-simple #'calc-extract-units "-1 m") + '(var m var-m))) + (should (calc-tests-equal (calc-tests-simple #'calc-extract-units "-1 m*cm") + '(* (float 1 -2) (^ (var m var-m) 2))))) + +(ert-deftest test-calc-convert-units () + ;; Used to ask for `(The expression is unitless when simplified) Old Units: '. + (should (calc-tests-equal (calc-tests-simple #'calc-convert-units "-1 m" nil "cm") + '(* -100 (var cm var-cm)))) + ;; Gave wrong result. + (should (calc-tests-equal (calc-tests-simple #'calc-convert-units "-1 m" + (math-read-expr "1m") "cm") + '(* -100 (var cm var-cm))))) + (provide 'calc-tests) ;;; calc-tests.el ends here |