func TestTime_FormatDate(t *testing.T) {
at := model.Time{time.Date(2016, 2, 3, 4, 5, 6, 0, time.UTC)}
actual := at.FormatDate()
expected := "2016/02/03"
if actual != expected {
t.Errorf("wrong result: expected %s, but actual %s", expected, actual)
}
}
