diff --git a/test.py b/test.py
index ad95b62..9caaedf 100644
--- a/test.py
+++ b/test.py
@@ -1,5 +1,13 @@
 import interpol.spline.linear.do as do
 import numpy as np
+
+import matplotlib.pyplot as plt
+
 x = np.arange(0, 4, 0.3)
 y = np.cos(x)
 ip = do.InterPolator(x, y)
+
+x_bar = np.arange(0, 4, 0.01)
+plt.plot(x_bar, np.cos(x_bar))
+plt.plot(x_bar, [ip.eval_float((i,)) for i in x_bar])
+plt.show()