dds/networks-tests.rkt

#lang racket

;;; Tests for dds/networks.

(require rackunit "networks.rkt")

;;; This test case sets up the following Boolean network:
;;; x1 = x1 AND NOT x2
;;; x2 = NOT x2
(test-case "Basic definitions"
  (let* ([f1 (λ (s)
               (let ([x1 (hash-ref s 'x1)]
                     [x2 (hash-ref s 'x2)])
                 (and x1 (not x2))))]
         [f2 (λ (s)
               (let ([x2 (hash-ref s 'x2)])
                 (not x2)))]
         [bn (make-network-from-functions `((x1 . ,f1) (x2 . ,f2)))])

    (test-case "One-step syncronous update"
      (let* ([s (make-state '((x1 . #t) (x2 . #f)))]
             [new-s (update bn s '(x2 x1))])
        (check-equal? (hash-ref new-s 'x1) #t)
        (check-equal? (hash-ref new-s 'x2) #t)
        (check-equal? (length (hash-keys new-s)) 2)))

    (test-case "One-step asynchronous update"
      (let* ([s (make-state '((x1 . #f) (x2 . #f)))]
             [new-s (update bn s '(x2 x1))])
        (check-equal? (hash-ref new-s 'x1) #f)
        (check-equal? (hash-ref new-s 'x2) #t)
        (check-equal? (length (hash-keys new-s)) 2)))))

(test-case "Syntactic description of Boolean networks"
  (let ([s (make-state '((x . #t) (y . #f)))]
        [f (update-function-form->update-function '(and x y))])
    (check-equal? (f s) #f))
  (let ([bn1 (network-form->network (make-hash '((a . (and a b)) (b . (not b)))))]
        [bn2 (make-network-from-forms '((a . (and a b))
                                        (b . (not b))))]
        [bn3 (nn '((a . (and a b))
                   (b . (not b))))]
        [s (st '((a . #t) (b . #t)))])
    (check-equal? ((hash-ref bn1 'a) s) #t)
    (check-equal? ((hash-ref bn2 'a) s) #t)
    (check-equal? ((hash-ref bn3 'a) s) #t)))