136 lines
4.0 KiB
Scheme
Executable File
136 lines
4.0 KiB
Scheme
Executable File
(module tests mzscheme
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(provide test-list)
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;;;;;;;;;;;;;;;; tests ;;;;;;;;;;;;;;;;
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(define test-list
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'(
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;; simple arithmetic
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(positive-const "11" 11)
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(negative-const "-33" -33)
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(simple-arith-1 "-(44,33)" 11)
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;; nested arithmetic
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(nested-arith-left "-(-(44,33),22)" -11)
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(nested-arith-right "-(55, -(22,11))" 44)
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;; simple variables
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(test-var-1 "x" 10)
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(test-var-2 "-(x,1)" 9)
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(test-var-3 "-(1,x)" -9)
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;; simple unbound variables
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(test-unbound-var-1 "foo" error)
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(test-unbound-var-2 "-(x,foo)" error)
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;; simple conditionals
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(if-true "if zero?(0) then 3 else 4" 3)
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(if-false "if zero?(1) then 3 else 4" 4)
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;; test dynamic typechecking
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(no-bool-to-diff-1 "-(zero?(0),1)" error)
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(no-bool-to-diff-2 "-(1,zero?(0))" error)
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(no-int-to-if "if 1 then 2 else 3" error)
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;; make sure that the test and both arms get evaluated
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;; properly.
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(if-eval-test-true "if zero?(-(11,11)) then 3 else 4" 3)
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(if-eval-test-false "if zero?(-(11, 12)) then 3 else 4" 4)
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;; and make sure the other arm doesn't get evaluated.
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(if-eval-test-true-2 "if zero?(-(11, 11)) then 3 else foo" 3)
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(if-eval-test-false-2 "if zero?(-(11,12)) then foo else 4" 4)
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;; simple let
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(simple-let-1 "let x = 3 in x" 3)
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;; make sure the body and rhs get evaluated
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(eval-let-body "let x = 3 in -(x,1)" 2)
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(eval-let-rhs "let x = -(4,1) in -(x,1)" 2)
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;; check nested let and shadowing
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(simple-nested-let "let x = 3 in let y = 4 in -(x,y)" -1)
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(check-shadowing-in-body "let x = 3 in let x = 4 in x" 4)
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(check-shadowing-in-rhs "let x = 3 in let x = -(x,1) in x" 2)
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;; simple applications
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(apply-proc-in-rator-pos "(proc(x) -(x,1) 30)" 29)
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(apply-simple-proc "let f = proc (x) -(x,1) in (f 30)" 29)
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(let-to-proc-1 "(proc(f)(f 30) proc(x)-(x,1))" 29)
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(nested-procs "((proc (x) proc (y) -(x,y) 5) 6)" -1)
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(nested-procs2 "let f = proc(x) proc (y) -(x,y) in ((f -(10,5)) 6)"
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-1)
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(y-combinator-1 "
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let fix = proc (f)
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let d = proc (x) proc (z) ((f (x x)) z)
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in proc (n) ((f (d d)) n)
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in let
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t4m = proc (f) proc(x) if zero?(x) then 0 else -((f -(x,1)),-4)
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in let times4 = (fix t4m)
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in (times4 3)" 12)
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;; simple letrecs
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(simple-letrec-1 "letrec f(x) = -(x,1) in (f 33)" 32)
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(simple-letrec-2
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"letrec f(x) = if zero?(x) then 0 else -((f -(x,1)), -2) in (f 4)"
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8)
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(simple-letrec-3
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"let m = -5
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in letrec f(x) = if zero?(x) then 0 else -((f -(x,1)), m) in (f 4)"
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20)
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; (fact-of-6 "letrec
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; fact(x) = if zero?(x) then 1 else *(x, (fact sub1(x)))
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;in (fact 6)"
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; 720)
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(HO-nested-letrecs
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"letrec even(odd) = proc(x) if zero?(x) then 1 else (odd -(x,1))
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in letrec odd(x) = if zero?(x) then 0 else ((even odd) -(x,1))
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in (odd 13)" 1)
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(begin-test-1
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"begin 1; 2; 3 end"
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3)
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;; extremely primitive testing for mutable variables
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(assignment-test-1 "let x = 17
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in begin set x = 27; x end"
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27)
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(gensym-test
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"let g = let count = 0 in proc(d)
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let d = set count = -(count,-1)
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in count
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in -((g 11), (g 22))"
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-1)
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(even-odd-via-set "
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let x = 0
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in letrec even(d) = if zero?(x) then 1
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else let d = set x = -(x,1)
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in (odd d)
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odd(d) = if zero?(x) then 0
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else let d = set x = -(x,1)
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in (even d)
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in let d = set x = 13 in (odd -99)" 1)
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(example-for-book-1 "
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let f = proc (x) proc (y)
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begin
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set x = -(x,-1);
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-(x,y)
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end
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in ((f 44) 33)"
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12)
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))
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) |