diff --git a/test_sample.py b/test_sample.py
new file mode 100644
index 0000000..2cdc05d
--- /dev/null
+++ b/test_sample.py
@@ -0,0 +1,7 @@
+# content of test_sample.py
+def inc(x):
+    return x + 1
+
+
+def test_answer():
+    assert inc(3) == 5