prettify emfit and use common module

tests/emfit.py

@@ -0,0 +1,23 @@
+from my.emfit import get_datas
+
+
+def test():
+    datas = get_datas()
+    for d in datas:
+        assert d.start.tzinfo is not None
+        assert d.end.tzinfo is not None
+        assert d.sleep_start.tzinfo is not None
+        assert d.sleep_end.tzinfo is not None
+
+
+def test_tz():
+    datas = get_datas()
+
+    # this was winter time, so GMT, UTC+0
+    [s0109] = [s for s in datas if s.date.strftime('%Y%m%d') == '20190109']
+    assert s0109.end.strftime('%H:%M') == '06:42'
+
+    # TODO FIXME ugh, it's broken?...
+    # summer time, so UTC+1
+    [s0411] = [s for s in datas if s.date.strftime('%Y%m%d') == '20190411']
+    assert s0411.end.strftime('%H:%M') == '09:30'