27 lines
1.1 KiB
Racket
27 lines
1.1 KiB
Racket
#lang racket/base
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;; Utilities for testing os-big-bang worlds.
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(require racket/match)
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(require rackunit)
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(require "os-big-bang.rkt")
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(provide check-message-handler)
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(define (flatten-transition t)
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(if (transition? t)
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(transition (transition-state t) (transition-actions t)) ;; autoflattens
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(transition t '()))) ;; wrap for convenient comparison
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;; (on-message ...) World Any World ListOf<Action> -> Void
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;; Passes the given message to the given message-handler, with the
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;; given initial-w. Compares the resulting world and list of actions
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;; to the expected world and list of actions using check-equal?.
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(define (check-message-handler mh initial-w message final-w expected-actions)
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(match-define (on-message pattern handler) mh)
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(check-true (pattern message) "Message-handler pattern did not match message provided")
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(define v (match (handler message initial-w)
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[(? transition? t) t]
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[new-w (transition new-w '())]))
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(check-equal? (flatten-transition v) (transition final-w expected-actions)
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"Produced world-and-actions did not match expected world-and-actions"))
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