implement keypad

tests/test_keypad.py

@@ -0,0 +1,23 @@
+import numpy as np
+
+from src.keypad import Keypad
+
+def test_keypad():
+    keypad = Keypad(
+        keypad=np.array([
+            [8, 9, 10, 11],
+            [0, 5, 2, 3],
+            [4, 1, 6,7]
+        ]), k= 3, p=4, keypad_cache=[])
+
+    assert keypad.key_entry([8, 5, 6, 11]) == [0,1,2,0]
+
+def test_shuffle():
+    p = 4  # properties_per_key
+    k = 3  # number_of_keys
+    keypad = Keypad.new_keypad(k, p)
+    print(keypad.keypad)
+    keypad.partial_shuffle()
+    print(keypad.keypad)
+    keypad.partial_shuffle()
+    print(keypad.keypad)