diff --git a/tests/test_runner.py b/tests/test_runner.py
new file mode 100644
index 0000000..efb2db5
--- /dev/null
+++ b/tests/test_runner.py
@@ -0,0 +1,12 @@
+from . import runner
+
+
+def test_exec(hello_world, capsys):
+    runner.exec(hello_world)
+    out, err = capsys.readouterr()
+    assert out.strip() == "Hello, World!"
+
+
+def test_eval():
+    out = runner.eval("5+5;")
+    assert out == 10.0