Sell book works!

test/book/core_test.clj

@@ -3,10 +3,8 @@
             [book.core :refer :all]))
 
 
-
-
 (deftest test-match-buy-order-in-sell-book
-  (testing "Simplest case."
+  (testing "Simplest case I."
     (let [sell-book (create-book {:type :sell :quantity 10 :price 2 :book.order/id 101})
           order {:type :buy :quantity 10 :price 2 :book.order/id 102}
           [trades new-book] (match-buy-order-in-sell-book sell-book order)]
@@ -33,4 +31,47 @@
           [trades new-book] (match-buy-order-in-sell-book sell-book order)]
       (is (= new-book []))
       (is (= trades [#:book.order{:quantity 2 :price 12 :book-id 107 :order-id 109 :type :sell}
-                     #:book.order{:quantity 8 :price 13 :book-id 108 :order-id 109 :type :sell}])))))
+                     #:book.order{:quantity 8 :price 13 :book-id 108 :order-id 109 :type :sell}]))))
+
+  (testing "Simplest case V."
+    (let [sell-book (create-book {:type :sell :quantity 2 :price 12 :book.order/id 110} {:type :sell :quantity 8 :price 13 :book.order/id 111})
+          order {:type :buy :quantity 10 :price 13 :book.order/id 112}
+          [trades new-book] (match-buy-order-in-sell-book sell-book order)]
+      (is (empty? new-book))
+      (is (= trades [#:book.order{:quantity 2 :price 12 :book-id 110 :order-id 112 :type :sell}
+                     #:book.order{:quantity 8 :price 13 :book-id 111 :order-id 112 :type :sell}]))))
+
+  (testing "Simplest case VI."
+    (let [sell-book (create-book {:type :sell :quantity 2 :price 12 :book.order/id 113} {:type :sell :quantity 8 :price 13 :book.order/id 114})
+          order {:type :buy :quantity 9 :price 13 :book.order/id 115}
+          [trades new-book] (match-buy-order-in-sell-book sell-book order)]
+      (is (= new-book (create-book {:type :sell :quantity 1 :price 13 :book.order/id 114})))
+      (is (= trades [#:book.order{:quantity 2 :price 12 :book-id 113 :order-id 115 :type :sell}
+                     #:book.order{:quantity 7 :price 13 :book-id 114 :order-id 115 :type :sell}]))))
+
+  (testing "Simplest case VII."
+    (let [sell-book (create-book {:type :sell :quantity 2 :price 12 :book.order/id 116} {:type :sell :quantity 8 :price 13 :book.order/id 117})
+          order {:type :buy :quantity 21 :price 13 :book.order/id 118}
+          [trades new-book leftover-order] (match-buy-order-in-sell-book sell-book order)]
+      (is (empty? new-book))
+      (is (= trades [#:book.order{:quantity 2 :price 12 :book-id 116 :order-id 118 :type :sell}
+                     #:book.order{:quantity 8 :price 13 :book-id 117 :order-id 118 :type :sell}]))
+      (is (= leftover-order {:type :buy :quantity 11 :price 13 :book.order/id 118}))))
+
+  (testing "Simplest case IIX."
+    (let [sell-book (create-book {:type :sell :quantity 2 :price 12 :book.order/id 116} {:type :sell :quantity 8 :price 13 :book.order/id 117})
+          order {:type :buy :quantity 21 :price 10 :book.order/id 118}
+          [trades new-book leftover-order] (match-buy-order-in-sell-book sell-book order)]
+      (is (= new-book sell-book))
+      (is (= trades []))
+      (is (= leftover-order order)))))
+
+
+;
+;(deftest test-match-sell-order-in-buy-book
+;  (testing "Simplest case I."
+;    (let [sell-book (create-book {:type :sell :quantity 10 :price 2 :book.order/id 101})
+;          order {:type :buy :quantity 10 :price 2 :book.order/id 102}
+;          [trades new-book] (match-sell-order-in-buy-book sell-book order)]
+;      (is (= new-book []))
+;      (is (= trades [#:book.order{:quantity 10 :price 2 :book-id 101 :order-id 102 :type :sell}])))))