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c33-tests.scm
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(load "./c33.scm")
(load "./test.scm")
; for testing stateful simulations
(define-syntax run-simulation
(syntax-rules ()
((run-simulation <body>)
(begin
(define a (make-agenda))
(define get-current-agenda (lambda() a))
<body>)
)))
(run-tests
'(
(=? '(mystery (list 'a 'b 'c 'd)) (list 'd 'c 'b 'a))
(=? '(count-pairs 316-proper-list) 3)
(=? '(count-pairs 316-pathological-1) 4)
(=? '(count-pairs 316-pathological-2) 7)
;(=? '(count-pairs 316-pathological-3) 'will-hang)
; ex 3.18
(=? '(is-cyclical (list 1 2 3)) #f)
(=? '(is-cyclical (list 1 2 2 3)) #f)
(=? '(is-cyclical l1) #t)
(=? '(is-cyclical 316-pathological-3) #t)
; ex 3.19
(=? '(is-cyclical-f (list 1 2 3)) #f)
(=? '(is-cyclical-f (list 1 2 2 3)) #f)
(=? '(is-cyclical-f l1) #t)
(=? '(is-cyclical-f 316-pathological-3) #t)
;ex 3.21
(=? '(let ((q1 (make-queue)))
(insert-queue! q1 'a))
(cons (list 'a) (list 'a)))
(=? '(show-queue (make-queue))
"Queue []")
(=? '(show-queue
(let ((q1 (make-queue)))
(insert-queue! q1 'a)
(insert-queue! q1 'b)))
"Queue (a b)")
(=? '(show-queue
(let ((q1 (make-queue)))
(insert-queue! q1 'a)
(delete-queue! q1)))
"Queue []")
;tables
(=? '(make-table)
(list 'Table))
(=? '(let ((t1 (make-table)))
(lookup 'some-key t1))
#f)
(=? '(let ((eu (make-table)))
(insert! 'poland 'warsaw eu)
(lookup 'poland eu))
'warsaw)
(=? '(let ((world (make-table)))
(insert2! 'eu 'germany 'berlin world)
(lookup2 'eu 'germany world))
'berlin)
(=? '(let ((world (make-table)))
(insert2! 'eu 'germany 'berlin world)
(lookup2 'eu 'brazil world))
#f)
(=? '(let ((world (make-table-obj)))
((world 'insert!) 'eu 'sweden 'stockholm)
((world 'lookup) 'eu 'sweden))
'stockholm)
(=? '(let ((world (make-table-obj)))
((world 'insert!) 'eu 'germany 'berlin)
((world 'lookup) 'eu 'switzerland))
#f)
(=? '(let* ((good-enuff? (lambda(x y) (< (abs (- x y)) 0.1)))
(loose-table (make-table-comp good-enuff?)))
((loose-table 'insert!) 1.0 2.0 3)
((loose-table 'lookup) 1.001 2.0009))
3)
;;unit test nested table functons
;empty key list has no effect
(=? '(let ((t (make-table)))
(v-insert! eq? t '() 'hello)
t)
(list 'Table))
;one item in list makes a key in current table
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'one) 'hello)
t)
(list 'Table (cons 'one 'hello)))
;using insert on the same key overwrites the value
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'one) 'hello)
(v-insert! eq? t (list 'one) 'hello-world)
t)
(list 'Table (cons 'one 'hello-world)))
;passing two keys gives a 2d table
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'one 'two) 'hello)
t)
(list 'Table (list 'one (cons 'two 'hello))))
;a new table is added even in previous table had a key only
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'one) 'hello)
(v-insert! eq? t (list 'one 'two) 'hello2)
t)
(let ((l (list 'one (cons 'two 'hello2))))
(set-cdr! (cdr l) 'hello)
(list 'Table l)))
; empty lookup list always returns false, no matter the table
(=? '(let ((t (make-table)))
(v-insert! eq? t '() 'hello)
(v-lookup eq? t '()))
#f)
; simple case
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'one) 'value)
(v-lookup eq? t (list 'one)))
'value)
; lookup only returns the value if it is atomic
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'world 'africa 'mozambique) 'maputo)
(v-lookup eq? t (list 'world)))
#f)
; if table is made 2-dimensional, the 1d value for a key is forgotten
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'one) 'hello)
(v-insert! eq? t (list 'one 'two) 'hello2)
(v-lookup eq? t (list 'one)))
#f)
; lookup returns the value if it atomic in deeply nested tables
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'world 'africa 'mozambique) 'maputo)
(v-lookup eq? t (list 'world 'africa 'mozambique)))
'maputo)
; insert overwrited deep table entries
(=? '(let ((t (make-table)))
(v-insert! eq? t (list 'world 'africa 'madagascar) 'antanananarivo)
(v-insert! eq? t (list 'world 'africa 'madagascar) 'antananarivo)
(v-lookup eq? t (list 'world 'africa 'madagascar)))
'antananarivo)
;; ex. 3.25
(=? '(let ((world (make-v-table-obj)))
((world 'insert!) (list 'eu 'sweden) 'stockholm)
((world 'lookup) (list 'eu 'sweden)))
'stockholm)
;; circuits
(=? '(let ((w (make-wire)))
(w 'get-signal))
0)
(=? '(let ((w (make-wire)))
((w 'set-signal!) 1)
(w 'get-signal))
1)
(=? '(run-simulation
(let* ((in (make-wire))
(out (make-wire))
(inv (inverter in out)))
(set-signal! in 0)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(and-g (and-gate in1 in2 out)))
(set-signal! in1 1)
(propagate)
(get-signal out)))
0)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(and-g (and-gate in1 in2 out)))
(set-signal! in2 1)
(propagate)
(get-signal out)))
0)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(and-g (and-gate in1 in2 out)))
(set-signal! in1 1)
(set-signal! in2 1)
(propagate)
(get-signal out)))
1)
; ex. 3.28
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(or-g (or-gate in1 in2 out)))
(propagate)
(get-signal out)))
0)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(or-g (or-gate in1 in2 out)))
(set-signal! in1 1)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(or-g (or-gate in1 in2 out)))
(set-signal! in2 1)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(or-g (or-gate in1 in2 out)))
(set-signal! in1 1)
(set-signal! in2 1)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(nand-g (nand-gate in1 in2 out)))
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(nand-g (nand-gate in1 in2 out)))
(set-signal! in1 1)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(nand-g (nand-gate in1 in2 out)))
(set-signal! in2 1)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(nand-g (nand-gate in1 in2 out)))
(set-signal! in1 1)
(set-signal! in2 1)
(propagate)
(get-signal out)))
0)
; ex. 3.29
; slow implementation, takes 2* NAND gate delay
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(or-g (or-gate-on-nand in1 in2 out)))
(propagate)
(get-signal out)))
0)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(or-g (or-gate-on-nand in1 in2 out)))
(set-signal! in1 1)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(or-g (or-gate-on-nand in1 in2 out)))
(set-signal! in2 1)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(out (make-wire))
(or-g (or-gate-on-nand in1 in2 out)))
(set-signal! in1 1)
(set-signal! in2 1)
(propagate)
(get-signal out)))
1)
(=? '(run-simulation
(let* ((a (make-wire))
(b (make-wire))
(sum (make-wire))
(carry (make-wire))
(ha (half-adder a b sum carry)))
(set-signal! a 1)
(propagate)
(list (get-signal sum) (get-signal carry))))
(list 1 0))
(=? '(run-simulation
(let* ((a (make-wire))
(b (make-wire))
(sum (make-wire))
(carry (make-wire))
(ha (half-adder a b sum carry)))
(set-signal! b 1)
(propagate)
(list (get-signal sum) (get-signal carry))))
(list 1 0))
(=? '(run-simulation
(let* ((a (make-wire))
(b (make-wire))
(sum (make-wire))
(carry (make-wire))
(ha (half-adder a b sum carry)))
(set-signal! a 1)
(set-signal! b 1)
(propagate)
(list (get-signal sum) (get-signal carry))))
(list 0 1))
(=? '(run-simulation
(let* ((a (make-wire))
(b (make-wire))
(carry-in (make-wire))
(carry-out (make-wire))
(sum (make-wire))
(fa (full-adder a b carry-in sum carry-out)))
(set-signal! a 1)
(propagate)
(list (get-signal sum) (get-signal carry-out))))
(list 1 0))
(=? '(run-simulation
(let* ((a (make-wire))
(b (make-wire))
(carry-in (make-wire))
(carry-out (make-wire))
(sum (make-wire))
(fa (full-adder a b carry-in sum carry-out)))
(set-signal! a 1)
(set-signal! b 1)
(propagate)
(list (get-signal sum) (get-signal carry-out))))
(list 0 1))
(=? '(run-simulation
(let* ((a (make-wire))
(b (make-wire))
(carry-in (make-wire))
(carry-out (make-wire))
(sum (make-wire))
(fa (full-adder a b carry-in sum carry-out)))
(set-signal! carry-in 1)
(propagate)
(list (get-signal sum) (get-signal carry-out))))
(list 1 0))
(=? '(run-simulation
(let* ((a (make-wire))
(b (make-wire))
(carry-in (make-wire))
(carry-out (make-wire))
(sum (make-wire))
(fa (full-adder a b carry-in sum carry-out)))
(set-signal! a 1)
(set-signal! b 1)
(set-signal! carry-in 1)
(propagate)
(list (get-signal sum) (get-signal carry-out))))
(list 1 1))
; ex. 3.30
(=? '(run-simulation
(let ((wires (make-wires (list 1 0 0))))
(propagate)
(get-signals wires)))
(list 1 0 0))
(=? '(run-simulation
(let ((wires (make-wires (list 1 0 0))))
(set-signals! wires (list 0 1 1))
(propagate)
(get-signals wires)))
(list 0 1 1))
(=? '(repeat 4 (lambda() 'x))
(list 'x 'x 'x 'x))
(=? '(run-simulation
(let* ((a (make-wires (list 0)))
(b (make-wires (list 1)))
(c (make-wire))
(sum (make-wires (list 0)))
(rca (ripple-carry-adder a b c sum)))
(propagate)
(get-signals sum)))
(list 1))
(=? '(run-simulation
(let* ((a (make-wires (list 0 1 1 1 0)))
(b (make-wires (list 0 0 0 1 0)))
(c (make-wire))
(sum (make-wires (list 0 0 0 0 0)))
(rca (ripple-carry-adder a b c sum)))
(propagate)
(get-signals sum)))
(list 1 0 0 0 0))
; probes
(=?o '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(sum (make-wire))
(carry (make-wire))
(ps (probe 'sum sum))
(pc (probe 'carry carry))
(ha (half-adder in1 in2 sum carry)))
(set-signal! in1 1)
(propagate)))
"sum at: 0 New value = 0\ncarry at: 0 New value = 0\nsum at: 8 New value = 1\n")
(=?o '(run-simulation
(let* ((in1 (make-wire))
(in2 (make-wire))
(sum (make-wire))
(carry (make-wire))
(ps (probe 'sum sum))
(pc (probe 'carry carry))
(ha (half-adder in1 in2 sum carry)))
(set-signal! in1 1)
(propagate)
(set-signal! in2 1)
(propagate)))
"sum at: 0 New value = 0\ncarry at: 0 New value = 0\nsum at: 8 New value = 1\ncarry at: 11 New value = 1\nsum at: 16 New value = 0\n")
; Celsius-Fahrenheit converter
(=?o '(run-simulation
(let* ((c (make-connector))
(f (make-connector)))
(celsius-fahrenheit-converter c f)
(probe-connector "fahrenheit temperature" f)
(set-value! c 25 'user)))
"Probe: fahrenheit temperature = 77\n")
(=?e '(run-simulation
(let* ((c (make-connector))
(f (make-connector)))
(celsius-fahrenheit-converter c f)
(probe-connector "fahrenheit temperature" f)
(set-value! c 25 'user)
(set-value! f 888 'user)))
'("contradiction" 77 888))
(=?o '(run-simulation
(let* ((c (make-connector))
(f (make-connector)))
(celsius-fahrenheit-converter c f)
(probe-connector "fahrenheit temperature" f)
(set-value! c 25 'user)
(forget-value! c 'user)))
"Probe: fahrenheit temperature = 77\nProbe: fahrenheit temperature = ?\n")
(=?o '(run-simulation
(let* ((c (make-connector))
(f (make-connector)))
(celsius-fahrenheit-converter c f)
(probe-connector "celsius temperature" c)
(set-value! c 25 'user)
(forget-value! c 'user)
(set-value! f 212 'user)))
"Probe: celsius temperature = 25\nProbe: celsius temperature = ?\nProbe: celsius temperature = 100\n")
; ex. 3.33
(=?o '(run-simulation
(let* ((a (make-connector))
(b (make-connector))
(avg (make-connector)))
(averager a b avg)
(probe-connector "average" avg)
(set-value! a 3 'user)
(set-value! b 0 'user)))
"Probe: average = 1.5\n")
; ex. 3.34
; The two a's represent the same wire, but (multiplier) is
; implemented in a way that requires its three connectors to be unique.
(=?o '(run-simulation
(let* ((a (make-connector))
(b (make-connector)))
(squarer34 a b)
(probe-connector "sqrt" a)
(set-value! b 25 'user)))
"") ; no cond predicate is satisfied inside the multiplier,
; information doesn't reach conn a
; ex. 3.35
(=?e '(let* ((a (make-connector))
(b (make-connector)))
(squarer a b)
(set-value! b -5 'user))
'("squarer: square less than 0:" -5))
(=?o '(run-simulation
(let* ((a (make-connector))
(b (make-connector)))
(squarer a b)
(probe-connector "sqrt" a)
(set-value! b 25 'user)))
"Probe: sqrt = 5.0\n")
(=?o '(run-simulation
(let* ((a (make-connector))
(b (make-connector)))
(squarer a b)
(probe-connector "square" b)
(set-value! a 2 'user)))
"Probe: square = 4\n")
(=?o '(run-simulation
(let* ((a (make-connector))
(b (make-connector)))
(squarer a b)
(probe-connector "square" b)
(set-value! a 2 'user)
(forget-value! a 'user)))
"Probe: square = 4\nProbe: square = ?\n")
; ex 3.36
; skipped
; ex 3.37
(=?o '(run-simulation
(let* ((c (make-connector))
(f (celsius->fahrenheit-converter c)))
(probe-connector "fahrenheit" f)
(set-value! c 25 'user)))
"Probe: fahrenheit = 77.0\n")
; (=? '(car x) "unbound variable")
))