Add a function to encrypt a message with the gamma cipher.

test/cipher_analytical_machine/ciphers/gamma_test.clj

@@ -39,6 +39,13 @@
       [4 32 15] 33 [3 14 1 4 18 19 23 8 27 17] [6 28 2 8 3 5 13 16 21 1]
       [1 2  3 ] 3  [0 2 1 1 0 1 2 2 0]         [0 1 2 2 0 2 1 1 0])))
 
+(deftest encrypt-message-test
+  (testing "Checking that the message is encrypted as expected"
+    (are [key symbols message expected]
+        (= expected (encrypt-message key symbols message))
+      [4 32 15] "абвгґдеєжзиіїйклмнопрстуфхцчшщьюя" "гкбґопужчн" "ешвжгдймсб"
+      [1 2  3 ] "абв"  "авббабвва"  "абввавбба")))
+
 (deftest decrypt-array-test
   (testing "Checking that the message is decrypted as expected."
     (are [key module array expected]