diff --git a/source/load_mod_from_source_code.py b/source/load_mod_from_source_code.py
index b2204a5..b9ce397 100644
--- a/source/load_mod_from_source_code.py
+++ b/source/load_mod_from_source_code.py
@@ -1,4 +1,4 @@
-sc = "a=b"
+sc = "a='b'"
 my_name_space = {}
 exec(sc, my_name_space)
-print(my_name_space['a'])
\ No newline at end of file
+print(my_name_space['a'])
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/tests/__init__.py
@@ -0,0 +1 @@
+
diff --git a/tests/test_examples.py b/tests/test_examples.py
new file mode 100644
index 0000000..a7825a6
--- /dev/null
+++ b/tests/test_examples.py
@@ -0,0 +1,24 @@
+import contextlib
+import io
+import runpy
+from pathlib import Path
+import unittest
+
+
+class ExampleScriptTests(unittest.TestCase):
+    def test_load_mod_from_source_code_runs(self):
+        script_path = (
+            Path(__file__).resolve().parents[1]
+            / "source"
+            / "load_mod_from_source_code.py"
+        )
+
+        output = io.StringIO()
+        with contextlib.redirect_stdout(output):
+            runpy.run_path(str(script_path))
+
+        self.assertEqual("b\n", output.getvalue())
+
+
+if __name__ == "__main__":
+    unittest.main()