--- a
+++ b/tests/test_largest_lyauponov_exponent.py
@@ -0,0 +1,19 @@
+import numpy
+import unittest
+
+from pyeeg import LLE
+
+
+class LLETests(unittest.TestCase):
+    def test_largest_lyauponov_exponent(self):
+        data = numpy.asarray([3, 4, 1, 2, 4, 51, 4, 32, 24, 12, 3, 45])
+
+        self.assertAlmostEqual(
+            LLE(data, 2, 4, 1, 1),
+            0.18771136179353307,
+            places=12
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()