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Test cases now cover all of unparse.rkt

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This commit is contained in:
Jens Axel Søgaard 2012-07-03 12:59:57 +02:00
parent eb39b34a3b
commit 5411bd0f53
1 changed files with 16 additions and 4 deletions
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20
bracket/unparse.rkt
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@ -77,10 +77,10 @@
(string-append* (add-between (map/first? #t unparse (operands form)) ",")))]
[(plus-expression? form)
(format "(~a)" (unparse-sum form #t))]
[(times-expression? form)
[(times-expression? form) ; This case is for unsimplified expressions
(format "(~a)" (unparse-product form #t))]
[(or (compound-expression? form)
(set-expression? form))
[(compound-expression? form)
; Note: Set expressions are compound expressions.
(format "~a(~a)" (operator form)
(string-append* (add-between (map/first? #t unparse (operands form)) ",")))]
[else
@ -95,7 +95,7 @@
(define bi (unparse b #f #t))
(define ei (unparse e #f #t))
(format "~a^~a" bi ei)]
[else (error)]))
[else (error 'unparse-power "Internal Bracket Error: got non-power: ~a" form)]))
(module* test #f
@ -127,6 +127,8 @@
(check-equal? (unparse '(Times 2 x)) "2*x")
(check-equal? (unparse '(Times 2/3 x)) "2/3*x")
(check-equal? (unparse '(Times -2 x)) "-2*x")
; Products of products (unsimplified)
(check-equal? (unparse '(Times 2 (Times 3 x) (Times -5 y))) "2*(3*x)*(-5*y)")
; Powers
(check-equal? (unparse '(Power 2 3)) "2^3")
(check-equal? (unparse '(Power -2 3)) "(-2)^3")
@ -155,4 +157,14 @@
(check-equal? (unparse '(Power (Times -2 (Sin x)) 5)) "(-2*Sin(x))^5")
; A sum as factor
(check-equal? (unparse '(Times x (Plus -9 (Power x 2)))) "x*(-9+x^2)")
; List
(check-equal? (unparse '(List)) "{}")
(check-equal? (unparse '(List 1)) "{1}")
(check-equal? (unparse '(List 1 2)) "{1,2}")
(check-equal? (unparse '(List 1 2 3)) "{1,2,3}")
; Set
(check-equal? (unparse '(Set)) "Set()")
(check-equal? (unparse '(Set 1)) "Set(1)")
(check-equal? (unparse '(Set 1 2)) "Set(1,2)")
(check-equal? (unparse '(Set 1 2 3)) "Set(1,2,3)")
)