Added .drone.yml for poetry project

tests/test_main.py

@@ -0,0 +1,17 @@
+import pytest
+from poetry_template.main import sum
+
+def test_sum():
+    a = 1
+    b = 2
+    s = 3
+
+    assert s == sum(a, b)
+
+
+def test_sum_wrong():
+    a = 1
+    b = 2
+    s_wrong = 4
+
+    assert s_wrong == sum(a, b)