diff --git a/TF_Implementation/test/test_RBF_tf.py b/TF_Implementation/test/test_RBF_tf.py
index 9989eb2..74a5401 100644
--- a/TF_Implementation/test/test_RBF_tf.py
+++ b/TF_Implementation/test/test_RBF_tf.py
@@ -16,6 +16,14 @@ class TestRBFLayer(unittest.TestCase):
         self.assertEqual(self.rbf_layer.centers.shape, (self.n_centers, self.input_dim))
         self.assertEqual(self.rbf_layer.sigmas.shape, (self.n_centers,))
 
+    def test_call(self):
+        """ Test the call method."""
+        inputs = tf.random.normal((3, self.input_dim))
+        output = self.rbf_layer(inputs)
+
+        self.assertEqual(output.shape, (3, self.n_centers))
+        self.assertTrue(tf.reduce_all(output >= 0)) 
+        
 
 if __name__ == '__main__':
     unittest.main()