Substantially closer to the declarative parser fully working, but not
yet perfect.
This commit is contained in:
parent
00e8a25144
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2 changed files with 353 additions and 340 deletions
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@ -11,7 +11,7 @@
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;; (1) rule text
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;; (2) cursor showing where in the rule text the error occurred
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;; (3) the reason for the error
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(def bad-parse-error "I did not understand:\n'%s'\n%s\n%s")
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(def bad-parse-error "I did not understand:\n '%s'\n %s\n %s")
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(def grammar
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@ -171,7 +171,11 @@
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(assert-type tree :PROPERTY-CONDITION)
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(let [property (generate (nth tree 1))
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qualifier (generate (nth tree 2))
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expression (generate (nth tree 3))]
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e (generate (nth tree 3))
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expression (cond
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(and (not (= qualifier '=)) (keyword? e)) (list 'or (list e 'cell) e)
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(and (not (= qualifier 'not=)) (keyword? e)) (list 'or (list e 'cell) e)
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:else e)]
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(case expression-type
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:DISJUNCT-EXPRESSION (generate-disjunct-property-condition tree property qualifier expression)
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:RANGE-EXPRESSION (generate-ranged-property-condition tree property expression)
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@ -207,9 +211,13 @@
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(defn generate-numeric-expression
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[tree]
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(assert-type tree :NUMERIC-EXPRESSION)
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(case (first (second tree))
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:SYMBOL (list (keyword (second (second tree))) 'cell)
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(generate (second tree))))
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(case (count tree)
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4 (let [[p operator expression] (rest tree)
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property (if (number? p) p (list p 'cell))]
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(list (generate operator) (generate property) (generate expression)))
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(case (first (second tree))
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:SYMBOL (list (keyword (second (second tree))) 'cell)
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(generate (second tree)))))
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(defn generate-neighbours-condition
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@ -270,6 +278,7 @@
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:SIMPLE-ACTION (generate-simple-action tree)
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:SYMBOL (keyword (second tree))
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:VALUE (generate (second tree))
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:OPERATOR (symbol (second tree))
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(map generate tree))
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tree))
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@ -39,6 +39,10 @@
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'(:sealevel cell))
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))
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(deftest comparative-tests
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(testing "Parsing comparatives."
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))
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(deftest lhs-generators-tests
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(testing "Generating left-hand-side fragments of rule functions from appropriate fragments of parse trees"
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(is (generate
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@ -100,418 +104,418 @@
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;; these are, in so far as possible, the same as the correctness-tests in core-tests - i.e., the two compilers
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;; compile the same language.
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(testing "Simplest possible rule"
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(let [afn (compile-rule "if state is new then state should be grassland")]
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(is (= (apply afn (list {:state :new} nil))
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{:state :grassland})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:state :forest} nil)))
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"Rule doesn't fire when condition isn't met")))
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(let [afn (compile-rule "if state is new then state should be grassland")]
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(is (= (apply afn (list {:state :new} nil))
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{:state :grassland})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:state :forest} nil)))
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"Rule doesn't fire when condition isn't met")))
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(testing "Condition conjunction rule"
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(let [afn (compile-rule "if state is new and altitude is 0 then state should be water")]
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(is (= (apply afn (list {:state :new :altitude 0} nil))
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{:state :water :altitude 0})
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"Rule fires when conditions are met")
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(is (nil? (apply afn (list {:state :new :altitude 5} nil)))
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"Rule does not fire: second condition not met")
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(is (nil? (apply afn (list {:state :forest :altitude 0} nil)))
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"Rule does not fire: first condition not met")))
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(let [afn (compile-rule "if state is new and altitude is 0 then state should be water")]
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(is (= (apply afn (list {:state :new :altitude 0} nil))
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{:state :water :altitude 0})
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"Rule fires when conditions are met")
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(is (nil? (apply afn (list {:state :new :altitude 5} nil)))
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"Rule does not fire: second condition not met")
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(is (nil? (apply afn (list {:state :forest :altitude 0} nil)))
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"Rule does not fire: first condition not met")))
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(testing "Condition disjunction rule"
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(let [afn (compile-rule "if state is new or state is waste then state should be grassland")]
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(is (= (apply afn (list {:state :new} nil))
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{:state :grassland})
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"Rule fires: first condition met")
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(is (= (apply afn (list {:state :waste} nil))
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{:state :grassland})
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"Rule fires: second condition met")
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(is (nil? (apply afn (list {:state :forest} nil)))
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"Rule does not fire: neither condition met")))
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(let [afn (compile-rule "if state is new or state is waste then state should be grassland")]
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(is (= (apply afn (list {:state :new} nil))
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{:state :grassland})
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"Rule fires: first condition met")
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(is (= (apply afn (list {:state :waste} nil))
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{:state :grassland})
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"Rule fires: second condition met")
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(is (nil? (apply afn (list {:state :forest} nil)))
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"Rule does not fire: neither condition met")))
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(testing "Simple negation rule"
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(let [afn (compile-rule "if state is not new then state should be grassland")]
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(is (nil? (apply afn (list {:state :new} nil)))
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"Rule doesn't fire when condition isn't met")
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(is (= (apply afn (list {:state :forest} nil))
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{:state :grassland})
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"Rule fires when condition is met")))
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(let [afn (compile-rule "if state is not new then state should be grassland")]
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(is (nil? (apply afn (list {:state :new} nil)))
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"Rule doesn't fire when condition isn't met")
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(is (= (apply afn (list {:state :forest} nil))
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{:state :grassland})
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"Rule fires when condition is met")))
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(testing "Can't set x or y properties"
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(is (thrown-with-msg?
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(is (thrown-with-msg?
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Exception #"The properties 'x' and 'y' of a cell are reserved and should not be set in rule actions"
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(compile-rule "if state is new then x should be 0"))
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"Exception thrown on attempt to set 'x'")
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(is (thrown-with-msg?
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"Exception thrown on attempt to set 'x'")
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(is (thrown-with-msg?
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Exception #"The properties 'x' and 'y' of a cell are reserved and should not be set in rule actions"
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(compile-rule "if state is new then y should be 0"))
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"Exception thrown on attempt to set 'y'"))
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"Exception thrown on attempt to set 'y'"))
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(testing "Simple list membership rule"
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(let [afn (compile-rule "if state is in heath or scrub or forest then state should be climax")]
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(is (= (apply afn (list {:state :heath} nil))
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{:state :climax})
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"Rule fires when condition is met")
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(is (= (apply afn (list {:state :scrub} nil))
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{:state :climax})
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"Rule fires when condition is met")
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(is (= (apply afn (list {:state :forest} nil))
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{:state :climax})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:state :grassland} nil)))
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"Rule does not fire when condition is not met")))
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(let [afn (compile-rule "if state is in heath or scrub or forest then state should be climax")]
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(is (= (apply afn (list {:state :heath} nil))
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{:state :climax})
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"Rule fires when condition is met")
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(is (= (apply afn (list {:state :scrub} nil))
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{:state :climax})
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"Rule fires when condition is met")
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(is (= (apply afn (list {:state :forest} nil))
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{:state :climax})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:state :grassland} nil)))
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"Rule does not fire when condition is not met")))
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(testing "Negated list membership rule"
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(let [afn (compile-rule "if state is not in heath or scrub or forest then state should be climax")]
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(is (nil? (apply afn (list {:state :heath} nil)))
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"Rule does not fire when condition is not met")
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(is (nil? (apply afn (list {:state :scrub} nil)))
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"Rule does not fire when condition is not met")
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(is (nil? (apply afn (list {:state :forest} nil)))
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"Rule does not fire when condition is not met")
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(is (= (apply afn (list {:state :grassland} nil))
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{:state :climax})
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"Rule fires when condition is met")))
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(let [afn (compile-rule "if state is not in heath or scrub or forest then state should be climax")]
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(is (nil? (apply afn (list {:state :heath} nil)))
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"Rule does not fire when condition is not met")
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(is (nil? (apply afn (list {:state :scrub} nil)))
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"Rule does not fire when condition is not met")
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(is (nil? (apply afn (list {:state :forest} nil)))
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"Rule does not fire when condition is not met")
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(is (= (apply afn (list {:state :grassland} nil))
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{:state :climax})
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"Rule fires when condition is met")))
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(testing "Property is more than numeric-value"
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(let [afn (compile-rule "if altitude is more than 200 then state should be snow")]
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(is (= (apply afn (list {:altitude 201} nil))
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{:state :snow :altitude 201})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:altitude 200} nil)))
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"Rule does not fire when condition is not met")))
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(let [afn (compile-rule "if altitude is more than 200 then state should be snow")]
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(is (= (apply afn (list {:altitude 201} nil))
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{:state :snow :altitude 201})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:altitude 200} nil)))
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"Rule does not fire when condition is not met")))
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;; TODO: this one is very tricky and will require a rethink of the way conditions are parsed.
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;; (testing "Property is more than property"
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;; (let [afn (compile-rule "if wolves are more than deer then deer should be 0")]
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;; (is (= (apply afn (list {:deer 2 :wolves 3} nil))
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;; {:deer 0 :wolves 3})
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;; "Rule fires when condition is met")
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;; (is (nil? (apply afn (list {:deer 3 :wolves 2} nil)))
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;; "Rule does not fire when condition is not met")))
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(testing "Property is more than property"
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(let [afn (compile-rule "if wolves are more than deer then deer should be 0")]
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(is (= (apply afn (list {:deer 2 :wolves 3} nil))
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{:deer 0 :wolves 3})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:deer 3 :wolves 2} nil)))
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"Rule does not fire when condition is not met")))
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(testing "Property is less than numeric-value"
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(let [afn (compile-rule "if altitude is less than 10 then state should be water")]
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(is (= (apply afn (list {:altitude 9} nil))
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{:state :water :altitude 9})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:altitude 10} nil)))
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"Rule does not fire when condition is not met")))
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(let [afn (compile-rule "if altitude is less than 10 then state should be water")]
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(is (= (apply afn (list {:altitude 9} nil))
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{:state :water :altitude 9})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:altitude 10} nil)))
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"Rule does not fire when condition is not met")))
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(testing "Property is less than property"
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(let [afn (compile-rule "if wolves are less than deer then deer should be deer - wolves")]
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(is (= (apply afn (list {:deer 3 :wolves 2} nil))
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{:deer 1 :wolves 2})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:deer 2 :wolves 3} nil)))
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"Rule does not fire when condition is not met")))
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(let [afn (compile-rule "if wolves are less than deer then deer should be deer - wolves")]
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(is (= (apply afn (list {:deer 3 :wolves 2} nil))
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{:deer 1 :wolves 2})
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"Rule fires when condition is met")
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(is (nil? (apply afn (list {:deer 2 :wolves 3} nil)))
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"Rule does not fire when condition is not met")))
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(testing "Number neighbours have property equal to value"
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(let [afn (compile-rule "if 3 neighbours have state equal to new then state should be water")
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world (make-world 3 3)]
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(is (= (apply afn (list {:x 0 :y 0} world))
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{:state :water :x 0 :y 0})
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"Rule fires when condition is met (in a new world all cells are new, corner cell has three neighbours)")
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(is (nil? (apply afn (list {:x 1 :y 1} world)))
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"Middle cell has eight neighbours, so rule does not fire."))
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(let [afn (compile-rule "if 3 neighbours are new then state should be water")
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world (make-world 3 3)]
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;; 'are new' and 'is new' should be the same as 'have state equal to new'
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(is (= (apply afn (list {:x 0 :y 0} world))
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{:state :water :x 0 :y 0})
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"Rule fires when condition is met (in a new world all cells are new, corner cell has three neighbours)")
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(is (nil? (apply afn (list {:x 1 :y 1} world)))
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"Middle cell has eight neighbours, so rule does not fire."))
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(let [afn (compile-rule "if 3 neighbours is new then state should be water")
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world (make-world 3 3)]
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;; 'are new' and 'is new' should be the same as 'have state equal to new'
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(is (= (apply afn (list {:x 0 :y 0} world))
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{:state :water :x 0 :y 0})
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"Rule fires when condition is met (in a new world all cells are new, corner cell has three neighbours)")
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(is (nil? (apply afn (list {:x 1 :y 1} world)))
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"Middle cell has eight neighbours, so rule does not fire.")))
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(let [afn (compile-rule "if 3 neighbours have state equal to new then state should be water")
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world (make-world 3 3)]
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(is (= (apply afn (list {:x 0 :y 0} world))
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{:state :water :x 0 :y 0})
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"Rule fires when condition is met (in a new world all cells are new, corner cell has three neighbours)")
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(is (nil? (apply afn (list {:x 1 :y 1} world)))
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"Middle cell has eight neighbours, so rule does not fire."))
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(let [afn (compile-rule "if 3 neighbours are new then state should be water")
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world (make-world 3 3)]
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;; 'are new' and 'is new' should be the same as 'have state equal to new'
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(is (= (apply afn (list {:x 0 :y 0} world))
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{:state :water :x 0 :y 0})
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"Rule fires when condition is met (in a new world all cells are new, corner cell has three neighbours)")
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(is (nil? (apply afn (list {:x 1 :y 1} world)))
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"Middle cell has eight neighbours, so rule does not fire."))
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(let [afn (compile-rule "if 3 neighbours is new then state should be water")
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world (make-world 3 3)]
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;; 'are new' and 'is new' should be the same as 'have state equal to new'
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(is (= (apply afn (list {:x 0 :y 0} world))
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{:state :water :x 0 :y 0})
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"Rule fires when condition is met (in a new world all cells are new, corner cell has three neighbours)")
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(is (nil? (apply afn (list {:x 1 :y 1} world)))
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"Middle cell has eight neighbours, so rule does not fire.")))
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(testing "Number neighbours have property more than numeric-value"
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(let [afn (compile-rule "if 3 neighbours have altitude more than 10 then state should be beach")
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world (transform-world
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(make-world 3 3)
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(list (compile-rule "if x is 2 then altitude should be 11")
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(compile-rule "if x is less than 2 then altitude should be 0")))]
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(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
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"Rule fires when condition is met (strip of altitude 11 down right hand side)")
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(is (nil? (apply afn (list {:x 2 :y 1} world)))
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"Middle cell of the strip has only two high neighbours, so rule should not fire.")))
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;; if 3 neighbours have altitude more than 10 then state should be beach
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(let [afn (compile-rule "if 3 neighbours have altitude more than 10 then state should be beach")
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world (transform-world
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(make-world 3 3)
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(list (compile-rule "if x is 2 then altitude should be 11")
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(compile-rule "if x is less than 2 then altitude should be 0")))]
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(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
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"Rule fires when condition is met (strip of altitude 11 down right hand side)")
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(is (nil? (apply afn (list {:x 2 :y 1} world)))
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"Middle cell of the strip has only two high neighbours, so rule should not fire.")))
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(testing "Number neighbours have property less than numeric-value"
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(let [afn (compile-rule "if 5 neighbours have altitude less than 10 then state should be beach")
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world (transform-world
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(make-world 3 3)
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(list (compile-rule "if x is 2 then altitude should be 11")
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(compile-rule "if x is less than 2 then altitude should be 0")))]
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(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
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"Rule fires when condition is met (strip of altitude 11 down right hand side)")
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(is (nil? (apply afn (list {:x 2 :y 1} world)))
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"Middle cell of the strip has two high neighbours, so rule should not fire.")))
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(let [afn (compile-rule "if 5 neighbours have altitude less than 10 then state should be beach")
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world (transform-world
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(make-world 3 3)
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(list (compile-rule "if x is 2 then altitude should be 11")
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(compile-rule "if x is less than 2 then altitude should be 0")))]
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(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
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"Rule fires when condition is met (strip of altitude 11 down right hand side)")
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(is (nil? (apply afn (list {:x 2 :y 1} world)))
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"Middle cell of the strip has two high neighbours, so rule should not fire.")))
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(testing "More than number neighbours have property equal to numeric-value"
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(let [afn (compile-rule "if more than 2 neighbours have altitude equal to 11 then state should be beach")
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world (transform-world
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(make-world 3 3)
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(list (compile-rule "if x is 2 then altitude should be 11")
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(compile-rule "if x is less than 2 then altitude should be 0")))]
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(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
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"Rule fires when condition is met (strip of altitude 11 down right hand side)")
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(is (nil? (apply afn (list {:x 2 :y 1} world)))
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"Middle cell of the strip has only two high neighbours, so rule should not fire.")))
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(let [afn (compile-rule "if more than 2 neighbours have altitude equal to 11 then state should be beach")
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world (transform-world
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(make-world 3 3)
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(list (compile-rule "if x is 2 then altitude should be 11")
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(compile-rule "if x is less than 2 then altitude should be 0")))]
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(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
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"Rule fires when condition is met (strip of altitude 11 down right hand side)")
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(is (nil? (apply afn (list {:x 2 :y 1} world)))
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"Middle cell of the strip has only two high neighbours, so rule should not fire.")))
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(testing "More than number neighbours have property equal to symbolic-value"
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(let [afn (compile-rule "if more than 2 neighbours have state equal to grassland then state should be beach")
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world (transform-world
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(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 2 :y 1} world)))
|
||||
"Middle cell of the strip has only two high neighbours, so rule should not fire."))
|
||||
(let [afn (compile-rule "if more than 2 neighbours are grassland then state should be beach")
|
||||
;; 'are grassland' should mean the same as 'have state equal to grassland'.
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 2 :y 1} world)))
|
||||
"Middle cell of the strip has only two high neighbours, so rule should not fire."))
|
||||
)
|
||||
(let [afn (compile-rule "if more than 2 neighbours have state equal to grassland then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 2 :y 1} world)))
|
||||
"Middle cell of the strip has only two high neighbours, so rule should not fire."))
|
||||
(let [afn (compile-rule "if more than 2 neighbours are grassland then state should be beach")
|
||||
;; 'are grassland' should mean the same as 'have state equal to grassland'.
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 2 :y 1} world)))
|
||||
"Middle cell of the strip has only two high neighbours, so rule should not fire."))
|
||||
)
|
||||
|
||||
(testing "Fewer than number neighbours have property equal to numeric-value"
|
||||
(let [afn (compile-rule "if fewer than 3 neighbours have altitude equal to 11 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 2 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (Middle cell of the strip has only two high neighbours)")
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Middle cell of world has three high neighbours, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if fewer than 3 neighbours have altitude equal to 11 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 2 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (Middle cell of the strip has only two high neighbours)")
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Middle cell of world has three high neighbours, so rule should not fire.")))
|
||||
|
||||
(testing "Fewer than number neighbours have property equal to symbolic-value"
|
||||
(let [afn (compile-rule "if fewer than 3 neighbours have state equal to grassland then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 2 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (Middle cell of the strip has only two high neighbours)")
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Middle cell of world has three high neighbours, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if fewer than 3 neighbours have state equal to grassland then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 2 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (Middle cell of the strip has only two high neighbours)")
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Middle cell of world has three high neighbours, so rule should not fire.")))
|
||||
|
||||
;; some neighbours have property equal to value
|
||||
;; some neighbours have property equal to value
|
||||
(testing "Some neighbours have property equal to numeric-value"
|
||||
(let [afn (compile-rule "if some neighbours have altitude equal to 11 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Left hand side of world has no high neighbours, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if some neighbours have altitude equal to 11 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Left hand side of world has no high neighbours, so rule should not fire.")))
|
||||
|
||||
(testing "Some neighbours have property equal to symbolic-value"
|
||||
(let [afn (compile-rule "if some neighbours have state equal to grassland then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Left hand side of world has no high neighbours, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if some neighbours have state equal to grassland then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Left hand side of world has no high neighbours, so rule should not fire.")))
|
||||
|
||||
;; more than number neighbours have property more than numeric-value
|
||||
;; more than number neighbours have property more than numeric-value
|
||||
(testing "More than number neighbours have property more than symbolic-value"
|
||||
(let [afn (compile-rule "if more than 2 neighbours have altitude more than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 2 :y 1} world)))
|
||||
"Middle cell of the strip has only two high neighbours, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if more than 2 neighbours have altitude more than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 2 :y 1} world)))
|
||||
"Middle cell of the strip has only two high neighbours, so rule should not fire.")))
|
||||
|
||||
;; fewer than number neighbours have property more than numeric-value
|
||||
;; fewer than number neighbours have property more than numeric-value
|
||||
(testing "Fewer than number neighbours have property more than numeric-value"
|
||||
(let [afn (compile-rule "if fewer than 3 neighbours have altitude more than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 2 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (Middle cell of the strip has only two high neighbours)")
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Middle cell of world has three high neighbours, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if fewer than 3 neighbours have altitude more than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 2 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (Middle cell of the strip has only two high neighbours)")
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Middle cell of world has three high neighbours, so rule should not fire.")))
|
||||
|
||||
;; some neighbours have property more than numeric-value
|
||||
;; some neighbours have property more than numeric-value
|
||||
(testing "Some neighbours have property more than numeric-value"
|
||||
(let [afn (compile-rule "if some neighbours have altitude more than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Left hand side of world has no high neighbours, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if some neighbours have altitude more than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Left hand side of world has no high neighbours, so rule should not fire.")))
|
||||
|
||||
;; more than number neighbours have property less than numeric-value
|
||||
;; more than number neighbours have property less than numeric-value
|
||||
(testing "More than number neighbours have property less than numeric-value"
|
||||
(let [afn (compile-rule "if more than 4 neighbours have altitude less than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 2 :y 1} world)))
|
||||
"Middle cell of the strip has only three low neighbours, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if more than 4 neighbours have altitude less than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 2 :y 1} world)))
|
||||
"Middle cell of the strip has only three low neighbours, so rule should not fire.")))
|
||||
|
||||
;; fewer than number neighbours have property less than numeric-value
|
||||
;; fewer than number neighbours have property less than numeric-value
|
||||
(testing "Fewer than number neighbours have property less than numeric-value"
|
||||
(let [afn (compile-rule "if fewer than 4 neighbours have altitude less than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Centre cell has five low neighbours, so rule should not fire")
|
||||
(is (= (:state (apply afn (list {:x 2 :y 1} world))) :beach)
|
||||
"Middle cell of the strip has only three low neighbours, so rule should fire.")))
|
||||
(let [afn (compile-rule "if fewer than 4 neighbours have altitude less than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is 2 then altitude should be 11")
|
||||
(compile-rule "if x is less than 2 then altitude should be 0")))]
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Centre cell has five low neighbours, so rule should not fire")
|
||||
(is (= (:state (apply afn (list {:x 2 :y 1} world))) :beach)
|
||||
"Middle cell of the strip has only three low neighbours, so rule should fire.")))
|
||||
|
||||
;; some neighbours have property less than numeric-value
|
||||
;; some neighbours have property less than numeric-value
|
||||
(testing "Some number neighbours have property less than numeric-value"
|
||||
(let [afn (compile-rule "if some neighbours have altitude less than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is less than 2 then altitude should be 11")
|
||||
(compile-rule "if x is 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 0 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Left of world is all high, so rule should not fire.")))
|
||||
(let [afn (compile-rule "if some neighbours have altitude less than 10 then state should be beach")
|
||||
world (transform-world
|
||||
(make-world 3 3)
|
||||
(list (compile-rule "if x is less than 2 then altitude should be 11")
|
||||
(compile-rule "if x is 2 then altitude should be 0")))]
|
||||
(is (= (:state (apply afn (list {:x 1 :y 1} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 0 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Left of world is all high, so rule should not fire.")))
|
||||
|
||||
|
||||
;; 'single action' already tested in 'condition' tests above
|
||||
;; action and actions
|
||||
;; 'single action' already tested in 'condition' tests above
|
||||
;; action and actions
|
||||
(testing "Conjunction of actions"
|
||||
(let [afn (compile-rule "if state is new then state should be grassland and fertility should be 0")]
|
||||
(is (= (apply afn (list {:state :new} nil))
|
||||
{:state :grassland :fertility 0})
|
||||
"Both actions are executed")))
|
||||
(let [afn (compile-rule "if state is new then state should be grassland and fertility should be 0")]
|
||||
(is (= (apply afn (list {:state :new} nil))
|
||||
{:state :grassland :fertility 0})
|
||||
"Both actions are executed")))
|
||||
|
||||
;; 'property should be symbolic-value' and 'property should be numeric-value'
|
||||
;; already tested in tests above
|
||||
;; 'property should be symbolic-value' and 'property should be numeric-value'
|
||||
;; already tested in tests above
|
||||
|
||||
;; number chance in number property should be value
|
||||
;; number chance in number property should be value
|
||||
(testing "Syntax of probability rule - action of real probability very hard to test"
|
||||
(let [afn (compile-rule "if state is forest then 5 chance in 5 state should be climax")]
|
||||
(is (= (:state (apply afn (list {:state :forest} nil))) :climax)
|
||||
"five chance in five should fire every time"))
|
||||
(let [afn (compile-rule "if state is forest then 0 chance in 5 state should be climax")]
|
||||
(is (nil? (apply afn (list {:state :forest} nil)))
|
||||
"zero chance in five should never fire")))
|
||||
(let [afn (compile-rule "if state is forest then 5 chance in 5 state should be climax")]
|
||||
(is (= (:state (apply afn (list {:state :forest} nil))) :climax)
|
||||
"five chance in five should fire every time"))
|
||||
(let [afn (compile-rule "if state is forest then 0 chance in 5 state should be climax")]
|
||||
(is (nil? (apply afn (list {:state :forest} nil)))
|
||||
"zero chance in five should never fire")))
|
||||
|
||||
;; property operator numeric-value
|
||||
;; property operator numeric-value
|
||||
(testing "Arithmetic action: addition of number"
|
||||
(let [afn (compile-rule "if state is climax then fertility should be fertility + 1")]
|
||||
(is (= (:fertility
|
||||
(apply afn (list {:state :climax :fertility 0} nil)))
|
||||
1)
|
||||
"Addition is executed")))
|
||||
(let [afn (compile-rule "if state is climax then fertility should be fertility + 1")]
|
||||
(is (= (:fertility
|
||||
(apply afn (list {:state :climax :fertility 0} nil)))
|
||||
1)
|
||||
"Addition is executed")))
|
||||
|
||||
(testing "Arithmetic action: addition of property value"
|
||||
(let [afn (compile-rule "if state is climax then fertility should be fertility + leaf-fall")]
|
||||
(is (= (:fertility
|
||||
(apply afn
|
||||
(list {:state :climax
|
||||
:fertility 0
|
||||
:leaf-fall 1} nil)))
|
||||
1)
|
||||
"Addition is executed")))
|
||||
(let [afn (compile-rule "if state is climax then fertility should be fertility + leaf-fall")]
|
||||
(is (= (:fertility
|
||||
(apply afn
|
||||
(list {:state :climax
|
||||
:fertility 0
|
||||
:leaf-fall 1} nil)))
|
||||
1)
|
||||
"Addition is executed")))
|
||||
|
||||
(testing "Arithmetic action: subtraction of number"
|
||||
(let [afn (compile-rule "if state is crop then fertility should be fertility - 1")]
|
||||
(is (= (:fertility
|
||||
(apply afn (list {:state :crop :fertility 2} nil)))
|
||||
1)
|
||||
"Action is executed")))
|
||||
(let [afn (compile-rule "if state is crop then fertility should be fertility - 1")]
|
||||
(is (= (:fertility
|
||||
(apply afn (list {:state :crop :fertility 2} nil)))
|
||||
1)
|
||||
"Action is executed")))
|
||||
|
||||
(testing "Arithmetic action: subtraction of property value"
|
||||
(let [afn (compile-rule "if wolves are more than 0 then deer should be deer - wolves")]
|
||||
(is (= (:deer
|
||||
(apply afn
|
||||
(list {:deer 3
|
||||
:wolves 2} nil)))
|
||||
1)
|
||||
"Action is executed")))
|
||||
(let [afn (compile-rule "if wolves are more than 0 then deer should be deer - wolves")]
|
||||
(is (= (:deer
|
||||
(apply afn
|
||||
(list {:deer 3
|
||||
:wolves 2} nil)))
|
||||
1)
|
||||
"Action is executed")))
|
||||
|
||||
(testing "Arithmetic action: multiplication by number"
|
||||
(let [afn (compile-rule "if deer are more than 1 then deer should be deer * 2")]
|
||||
(is (= (:deer
|
||||
(apply afn (list {:deer 2} nil)))
|
||||
4)
|
||||
"Action is executed")))
|
||||
(let [afn (compile-rule "if deer are more than 1 then deer should be deer * 2")]
|
||||
(is (= (:deer
|
||||
(apply afn (list {:deer 2} nil)))
|
||||
4)
|
||||
"Action is executed")))
|
||||
|
||||
(testing "Arithmetic action: multiplication by property value"
|
||||
(let [afn (compile-rule "if state is crop then deer should be deer * deer")]
|
||||
(is (= (:deer
|
||||
(apply afn
|
||||
(list {:state :crop :deer 2} nil)))
|
||||
4)
|
||||
"Action is executed")))
|
||||
(let [afn (compile-rule "if state is crop then deer should be deer * deer")]
|
||||
(is (= (:deer
|
||||
(apply afn
|
||||
(list {:state :crop :deer 2} nil)))
|
||||
4)
|
||||
"Action is executed")))
|
||||
|
||||
(testing "Arithmetic action: division by number"
|
||||
(let [afn (compile-rule "if wolves are more than 0 then deer should be deer / 2")]
|
||||
(is (= (:deer
|
||||
(apply afn (list {:deer 2 :wolves 1} nil)))
|
||||
1)
|
||||
"Action is executed")))
|
||||
(let [afn (compile-rule "if wolves are more than 0 then deer should be deer / 2")]
|
||||
(is (= (:deer
|
||||
(apply afn (list {:deer 2 :wolves 1} nil)))
|
||||
1)
|
||||
"Action is executed")))
|
||||
|
||||
(testing "Arithmetic action: division by property value"
|
||||
(let [afn (compile-rule "if wolves are more than 0 then deer should be deer / wolves")]
|
||||
(is (= (:deer
|
||||
(apply afn
|
||||
(list {:deer 2 :wolves 2} nil)))
|
||||
1)
|
||||
"Action is executed")))
|
||||
(let [afn (compile-rule "if wolves are more than 0 then deer should be deer / wolves")]
|
||||
(is (= (:deer
|
||||
(apply afn
|
||||
(list {:deer 2 :wolves 2} nil)))
|
||||
1)
|
||||
"Action is executed")))
|
||||
|
||||
;; simple within distance
|
||||
;; simple within distance
|
||||
(testing "Number neighbours within distance have property equal to value"
|
||||
(let [afn (compile-rule "if 8 neighbours within 2 have state equal to new then state should be water")
|
||||
world (make-world 5 5)]
|
||||
(is (= (apply afn (list {:x 0 :y 0} world))
|
||||
{:state :water :x 0 :y 0})
|
||||
"Rule fires when condition is met (in a new world all cells are new, corner cell has eight neighbours within two)")
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Middle cell has twenty-four neighbours within two, so rule does not fire.")))
|
||||
(let [afn (compile-rule "if 8 neighbours within 2 have state equal to new then state should be water")
|
||||
world (make-world 5 5)]
|
||||
(is (= (apply afn (list {:x 0 :y 0} world))
|
||||
{:state :water :x 0 :y 0})
|
||||
"Rule fires when condition is met (in a new world all cells are new, corner cell has eight neighbours within two)")
|
||||
(is (nil? (apply afn (list {:x 1 :y 1} world)))
|
||||
"Middle cell has twenty-four neighbours within two, so rule does not fire.")))
|
||||
|
||||
;; comparator within distance
|
||||
;; comparator within distance
|
||||
(testing "More than number neighbours within distance have property equal to symbolic-value"
|
||||
(let [afn (compile-rule "if more than 7 neighbours within 2 have state equal to grassland and more than 7 neighbours within 2 have state equal to water then state should be beach")
|
||||
;; 5x5 world, strip of high ground two cells wide down left hand side
|
||||
;; xxooo
|
||||
;; xxooo
|
||||
;; xxooo
|
||||
;; xxooo
|
||||
;; xxooo
|
||||
world (transform-world
|
||||
(make-world 5 5)
|
||||
(list (compile-rule "if x is less than 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is more than 1 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 2 :y 2} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Middle cell of the strip has only two high neighbours, so rule should not fire."))
|
||||
(let [afn (compile-rule "if more than 7 neighbours within 2 have state equal to grassland and more than 7 neighbours within 2 have state equal to water then state should be beach")
|
||||
;; 5x5 world, strip of high ground two cells wide down left hand side
|
||||
;; xxooo
|
||||
;; xxooo
|
||||
;; xxooo
|
||||
;; xxooo
|
||||
;; xxooo
|
||||
world (transform-world
|
||||
(make-world 5 5)
|
||||
(list (compile-rule "if x is less than 2 then altitude should be 11 and state should be grassland")
|
||||
(compile-rule "if x is more than 1 then altitude should be 0 and state should be water")))]
|
||||
(is (= (:state (apply afn (list {:x 2 :y 2} world))) :beach)
|
||||
"Rule fires when condition is met (strip of altitude 11 down right hand side)")
|
||||
(is (nil? (apply afn (list {:x 0 :y 1} world)))
|
||||
"Middle cell of the strip has only two high neighbours, so rule should not fire."))
|
||||
))
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue