diff --git a/pytest/test_sim_data_func.py b/pytest/test_sim_data_func.py
new file mode 100644
index 0000000..8145bd6
--- /dev/null
+++ b/pytest/test_sim_data_func.py
@@ -0,0 +1,8 @@
+from GENetLib.sim_data_func import sim_data_func
+
+def test_sim_data_func():
+    func_continuous = sim_data_func(n=1500, m=30, ytype='Continuous', seed=123)
+    assert func_continuous['X'] is not None 
+    assert func_continuous['y'] is not None
+    assert func_continuous['z'] is not None
+    assert func_continuous['location'] is not None