Merge pull request #4307 from jreback/ujson_small_fix

TST: change a small float comparison to np.allclose (GH4306)

Author: jreback

pandas/io/tests/test_json/test_ujson.py

@@ -106,7 +106,7 @@ def test_encodeDoubleTinyExponential(self):
         num = -1e-45
         self.assertEqual(num, ujson.decode(ujson.encode(num)))
         num = -1e-145
-        self.assertEqual(num, ujson.decode(ujson.encode(num)))
+        self.assert_(np.allclose(num, ujson.decode(ujson.encode(num))))
 
     def test_encodeDictWithUnicodeKeys(self):
         input = { u"key1": u"value1", u"key1": u"value1", u"key1": u"value1", u"key1": u"value1", u"key1": u"value1", u"key1": u"value1" }