diff --git a/test_network.py b/test_network.py
new file mode 100644
index 0000000..d157584
--- /dev/null
+++ b/test_network.py
@@ -0,0 +1,13 @@
+from network import sigmoid, sigmoid_deriv
+
+def test_math_functions():
+    # sigmoid test function
+    assert sigmoid(0) == 0.5
+    assert sigmoid(10) > 0.99
+    assert sigmoid(-10) < 0.01
+    
+    # sigmoid derivation test function
+    assert sigmoid_deriv(0.0) == 0.25
+    # sigmoid derivation shape test
+    assert sigmoid_deriv(10.0) < sigmoid_deriv(0.0)
+    assert sigmoid_deriv(-10.0) < sigmoid_deriv(0.0)
\ No newline at end of file