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(ns com.owoga.frp.infrastructure-test
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(:require [com.owoga.frp.infrastructure :as frp]
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[clojure.test :refer [deftest is testing]]))
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(deftest test-project
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(testing "projection"
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(let [Offer (frp/->BaseRelVar 'Offer (atom #{}) '())
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OfferPrices (frp/project Offer [:price])]
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(frp/load! Offer #{{:address "123 Fake St." :price 2e5}})
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(is (= @OfferPrices #{{:price 2e5}})))))
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(deftest test-insert!
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(testing "insert!"
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(let [Offer (frp/->BaseRelVar 'Offer (atom #{}) '())]
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(frp/insert! Offer {:address "123 Fake St." :price 1.5e5})
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(is (= @Offer #{{:address "123 Fake St." :price 1.5e5}})))))
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(deftest test-defrelvar
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(testing "macro works"
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(let [Offer (frp/defrelvar Offer (fn [offers] (map #(> (:price %) 0) offers)))]
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(is (thrown-with-msg?
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Exception
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#"Constraint Exception"
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(frp/insert! Offer {:price -1}))))))
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