diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..95962b1
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+pytest===7.2.0 
diff --git a/test/test_save.py b/test/test_save.py
new file mode 100644
index 0000000..2cdc05d
--- /dev/null
+++ b/test/test_save.py
@@ -0,0 +1,7 @@
+# content of test_sample.py
+def inc(x):
+    return x + 1
+
+
+def test_answer():
+    assert inc(3) == 5