test: exhibit issue with naive stamps

With pandas 0.25 we get back utc stuff.

see pandas-dev/pandas#29706

Author: zogzog

test/test_api.py

@@ -10,6 +10,22 @@
 )
 
 
+def test_naive(client, engine, tsh):
+    series_in = genserie(pd.Timestamp('2018-1-1'), 'H', 3)
+    client.update('test', series_in, 'Babar',
+                  insertion_date=utcdt(2019, 1, 1))
+    assert client.exists('test')
+
+    # now let's get it back
+    ts = client.get('test')
+    assert_df("""
+2018-01-01 00:00:00+00:00    0.0
+2018-01-01 01:00:00+00:00    1.0
+2018-01-01 02:00:00+00:00    2.0
+""", ts)
+    assert ts.index.dtype.tz.zone == 'UTC'
+
+
 def test_base(client, engine, tsh):
     assert repr(client) == "tshistory-http-client(uri='http://test-uri')"