diff --git a/pytest.ini b/pytest.ini
new file mode 100644
index 0000000..5ee6477
--- /dev/null
+++ b/pytest.ini
@@ -0,0 +1,2 @@
+[pytest]
+testpaths = tests
diff --git a/tests/test_result_parser.py b/tests/test_result_parser.py
new file mode 100644
index 0000000..f135e21
--- /dev/null
+++ b/tests/test_result_parser.py
@@ -0,0 +1,14 @@
+import sys
+import os
+
+# Ensure that 'src' directory is on sys.path so that we can import from src.result_parser
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+from src.result_parser import outliers_modified_z_score
+
+
+def test_outliers_modified_z_score():
+    values = [1, 2, 3, 50]
+    result = outliers_modified_z_score(values)
+    assert result == [1, 2, 3]
+