Day 9 Completed

put example_input.txt back in repos, for unittest purposes

day9/test.py

@@ -0,0 +1,17 @@
+import unittest
+from common import OASISLine
+
+
+class Day9Tests(unittest.TestCase):
+    def test_part1(self):
+        analysis = OASISLine.parse("example_input.txt")
+        extrapolation = map(lambda o: o.reduce().extrapolate(), analysis)
+        self.assertEqual(sum(extrapolation), 114)
+
+    def test_part2(self):
+        analysis = OASISLine.parse("example_input.txt")
+        extrapolation = map(lambda o: o.reduce().extrapolate_back(), analysis)
+        self.assertEqual(sum(extrapolation), 2)
+
+if __name__ == "__main__":
+    unittest.main()