diff --git a/keke b/keke
new file mode 100644
index 0000000000000000000000000000000000000000..c3082c2632a0d88d86035f16390b4ea15957b06b
--- /dev/null
+++ b/keke
@@ -0,0 +1,9 @@
+import pytest
+from pythonsource.calculator import Calculator
+
+
+class TestCalc:
+
+    @pytest.mark.parametrize("a,b,expect", [(1, 1, 2), (-0.01, 0.02, 0.01)])
+    def test_calc(self, a, b, expect):
+        assert Calculator.add(self,a,b) == expect
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