func (s *S) TestEncodeCoordinates(c *C) {
var tweet ts.Tweet
tweet.Coordinates = &ts.Point{ts.Latitude(10.1), ts.Longitude(-12.5)}
data := decodeJson(marshal(tweet))
coords := data["coordinates"].(map[string]interface{})
points := coords["coordinates"].([]interface{})
c.Assert(points[0], Equals, -12.5)
c.Assert(points[1], Equals, 10.1)
}
