add test for #13213

Author: Felix Marczinowski

pandas/tests/frame/test_json.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+""""""
+
+from __future__ import (absolute_import, division, print_function)
+
+import pandas.util.testing as tm
+import pandas as pd
+import json
+
+
+class TestJSON(tm.TestCase):
+    testjson = u'''
+    [{"Ünicøde":0,"sub":{"A":1, "B":2}},
+     {"Ünicøde":1,"sub":{"A":3, "B":4}}]
+     '''.encode('utf8')
+
+    testdata = {
+        u'sub.A': [1, 3],
+        u'sub.B': [2, 4],
+        u'Ünicøde': [0, 1]
+    }
+    testdf = pd.DataFrame(testdata)
+
+    def test_json_normalize(self):
+        df = pd.io.json.json_normalize(json.loads(self.testjson))
+        tm.assert_frame_equal(df, self.testdf)