func (t *TestSuite) TestMD5Stringer_MarshalJSON(c *C) { var b []byte var err error var e minfraud.MD5Stringer = "These pretzels are making me thirsty." b, err = e.MarshalJSON() c.Assert(err, IsNil) c.Check(string(b), Equals, `"b0804ec967f48520697662a204f5fe72"`) }