diff --git a/source/load_mod_from_source_code.py b/source/load_mod_from_source_code.py
index b2204a5..f108168 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
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..582f40d
--- /dev/null
+++ b/tests/test_examples.py
@@ -0,0 +1,23 @@
+import subprocess
+import sys
+import unittest
+from pathlib import Path
+
+
+class ExampleScriptsTestCase(unittest.TestCase):
+    def test_load_mod_from_source_code_runs_successfully(self):
+        script = Path(__file__).resolve().parents[1] / "source" / "load_mod_from_source_code.py"
+
+        result = subprocess.run(
+            [sys.executable, str(script)],
+            check=True,
+            capture_output=True,
+            text=True,
+        )
+
+        self.assertEqual(result.stdout, "b\n")
+        self.assertEqual(result.stderr, "")
+
+
+if __name__ == "__main__":
+    unittest.main()