Update test_sample.py

Author: Andrew-S-Rosen

tests/sample/test_sample.py

@@ -1,3 +1,4 @@
+import pytest
 import numpy as np
 from numpy.testing import assert_allclose
 
@@ -6,6 +7,7 @@
 
 def test_add():
 	assert add(1, 2) == 3
+	assert add(1.5, 2.0) == pytest.approx(3.5)
 
 def test_make_array():
 	assert_allclose(make_array(3), np.array([3, 3, 3]))