106 lines
3.0 KiB
Racket
Executable File
106 lines
3.0 KiB
Racket
Executable File
#lang eopl
|
|
(require tests/eopl/private/utils)
|
|
|
|
(require "data-structures.rkt") ; for expval constructors
|
|
(require "lang.rkt") ; for scan&parse
|
|
(require "interp.rkt") ; for value-of-program
|
|
|
|
;; run : String -> ExpVal
|
|
(define run
|
|
(lambda (string)
|
|
(value-of-program (scan&parse string))))
|
|
|
|
(define equal-answer?
|
|
(lambda (ans correct-ans)
|
|
(equal? ans (sloppy->expval correct-ans))))
|
|
|
|
(define sloppy->expval
|
|
(lambda (sloppy-val)
|
|
(cond
|
|
((number? sloppy-val) (num-val sloppy-val))
|
|
((boolean? sloppy-val) (bool-val sloppy-val))
|
|
(else
|
|
(eopl:error 'sloppy->expval
|
|
"Can't convert sloppy value to expval: ~s"
|
|
sloppy-val)))))
|
|
|
|
(define-syntax-rule (check-run (name str res) ...)
|
|
(begin
|
|
(cond [(eqv? 'res 'error)
|
|
(check-exn always? (lambda () (run str)))]
|
|
[else
|
|
(check equal-answer? (run str) 'res (symbol->string 'name))])
|
|
...))
|
|
|
|
|
|
;;;;;;;;;;;;;;;; tests ;;;;;;;;;;;;;;;;
|
|
|
|
(check-run
|
|
;; simple arithmetic
|
|
(positive-const "11" 11)
|
|
(negative-const "-33" -33)
|
|
(simple-arith-1 "-(44,33)" 11)
|
|
|
|
;; nested arithmetic
|
|
(nested-arith-left "-(-(44,33),22)" -11)
|
|
(nested-arith-right "-(55, -(22,11))" 44)
|
|
|
|
;; simple variables
|
|
(test-var-1 "x" 10)
|
|
(test-var-2 "-(x,1)" 9)
|
|
(test-var-3 "-(1,x)" -9)
|
|
|
|
;; simple unbound variables
|
|
(test-unbound-var-1 "foo" error)
|
|
(test-unbound-var-2 "-(x,foo)" error)
|
|
|
|
;; simple conditionals
|
|
(if-true "if zero?(0) then 3 else 4" 3)
|
|
(if-false "if zero?(1) then 3 else 4" 4)
|
|
|
|
;; test dynamic typechecking
|
|
(no-bool-to-diff-1 "-(zero?(0),1)" error)
|
|
(no-bool-to-diff-2 "-(1,zero?(0))" error)
|
|
(no-int-to-if "if 1 then 2 else 3" error)
|
|
|
|
;; make sure that the test and both arms get evaluated
|
|
;; properly.
|
|
(if-eval-test-true "if zero?(-(11,11)) then 3 else 4" 3)
|
|
(if-eval-test-false "if zero?(-(11, 12)) then 3 else 4" 4)
|
|
|
|
;; and make sure the other arm doesn't get evaluated.
|
|
(if-eval-test-true-2 "if zero?(-(11, 11)) then 3 else foo" 3)
|
|
(if-eval-test-false-2 "if zero?(-(11,12)) then foo else 4" 4)
|
|
|
|
;; simple let
|
|
(simple-let-1 "let x = 3 in x" 3)
|
|
|
|
;; make sure the body and rhs get evaluated
|
|
(eval-let-body "let x = 3 in -(x,1)" 2)
|
|
(eval-let-rhs "let x = -(4,1) in -(x,1)" 2)
|
|
|
|
;; check nested let and shadowing
|
|
(simple-nested-let "let x = 3 in let y = 4 in -(x,y)" -1)
|
|
(check-shadowing-in-body "let x = 3 in let x = 4 in x" 4)
|
|
(check-shadowing-in-rhs "let x = 3 in let x = -(x,1) in x" 2)
|
|
|
|
;; simple applications
|
|
(apply-proc-in-rator-pos "(proc(x) -(x,1) 30)" 29)
|
|
(apply-simple-proc "let f = proc (x) -(x,1) in (f 30)" 29)
|
|
(let-to-proc-1 "(proc(f)(f 30) proc(x)-(x,1))" 29)
|
|
|
|
|
|
(nested-procs "((proc (x) proc (y) -(x,y) 5) 6)" -1)
|
|
(nested-procs2 "let f = proc(x) proc (y) -(x,y) in ((f -(10,5)) 6)"
|
|
-1)
|
|
|
|
(y-combinator-1 "
|
|
let fix = proc (f)
|
|
let d = proc (x) proc (z) ((f (x x)) z)
|
|
in proc (n) ((f (d d)) n)
|
|
in let
|
|
t4m = proc (f) proc(x) if zero?(x) then 0 else -((f -(x,1)),-4)
|
|
in let times4 = (fix t4m)
|
|
in (times4 3)" 12)
|
|
)
|