started the rest api

test/book/exchange_test.clj

@@ -0,0 +1,28 @@
+(ns book.exchange-test
+  (:require [midje.sweet :refer :all]
+            [book.exchange :refer :all]
+            [book.match :refer [create-buy-book
+                                create-sell-book]]
+            [clojure.core.async :refer [chan go >!! <!!]]))
+
+(facts "the exchange as an whole"
+  (fact "sell order followed by a buy order trivialities  "
+        (let [incoming-order-channel (chan)
+              trades-channel (chan)
+              new-book-order-channel (chan)
+              master-book {:sell (create-sell-book) :buy (create-buy-book)}]
+          (go (process-orders master-book incoming-order-channel trades-channel new-book-order-channel))
+          (>!! incoming-order-channel {:type :sell :quantity 10 :price 2})
+          (<!! new-book-order-channel) => {:type :sell :quantity 10 :price 2}
+          (>!! incoming-order-channel {:type :buy :quantity 20 :price 2})
+          (<!! trades-channel) => #:book.order{:book-id nil
+                                               :order-id nil
+                                               :price 2
+                                               :quantity 10
+                                               :type :sell}
+          (<!! new-book-order-channel) => {:type :buy :quantity 10 :price 2})))
+
+
+
+
+