Added blank unit test file for optimize.py.

tests/test_optimize.py

@@ -0,0 +1,13 @@
+import unittest
+
+from src.optimize import optimize_global
+from src.utils import Statement as S, Block as B
+
+
+class TestOptimize(unittest.TestCase):
+
+    def setUp(self):
+        pass
+
+    def test_(self):
+        pass