X-Git-Url: http://git.jkinsey.net/?p=adventofcode2019.git;a=blobdiff_plain;f=test%2Fadventofcode2019%2Fday14_test.clj;fp=test%2Fadventofcode2019%2Fday14_test.clj;h=1a6bd86b138a7fd01bb0949b17f3ec88a2781b44;hp=0000000000000000000000000000000000000000;hb=e26daef486624d7197207d38b601a4e505e6ef26;hpb=15f6c3bbb172e88ff9a6d393057abc40db9373bf

diff --git a/test/adventofcode2019/day14_test.clj b/test/adventofcode2019/day14_test.clj
new file mode 100644
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--- /dev/null
+++ b/test/adventofcode2019/day14_test.clj
@@ -0,0 +1,37 @@
+(ns adventofcode2019.day14-test
+  (:require [clojure.test :refer :all]
+            [adventofcode2019.day14 :refer :all]))
+
+(deftest check-make-graph
+  (is (= (make-graph ["3 ORE => 2 ABC" 
+                      "3 ABC => 1 FUEL"])
+         {"ABC"  {{"ORE" 3/2} 1}
+          "FUEL" {{"ABC" 3}   1}})))
+
+(deftest simple-exchange
+  (is (= 3 (find-lowest-exchange-rate {"FUEL" {{"ORE" 1, "ABC" 2, "DEF" 3} 1 
+                                               {"ORE" 3} 1 
+                                               {"GHI" 5/2} 1}} 
+                                      "FUEL" "ORE"))))
+
+(deftest trading-up
+  (is (= 6 (find-lowest-exchange-rate (make-graph ["3 ORE => 2 ABC"
+                                                   "3 ABC => 1 FUEL"])
+                                      "FUEL" "ORE"))))
+
+(deftest complicated-exchange
+  (is (= 2 (find-lowest-exchange-rate (make-graph ["3 ORE => 2 ABC"
+                                                   "3 ABC => 1 FUEL"
+                                                   "2 ORE => 1 CDE"
+                                                   "1 CDE => 1 FUEL"])
+                                      "FUEL" "ORE"))))
+
+(deftest very-tricky-exchange
+  (is (= 3 (find-lowest-exchange-rate (make-graph ["3 ORE => 2 ABC"
+                                                   "3 ABC => 1 FUEL"
+                                                   "4 ORE => 1 CDE"
+                                                   "1 CDE => 1 FUEL"
+                                                   "3 ORE => 2 FGH"
+                                                   "1 FGH => 1 IJK"
+                                                   "1 IJK => 1 FUEL"])
+                                      "FUEL" "ORE"))))