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use std::io::prelude::*;
use deserialize::{self, FromSql};
use pg::Pg;
use serialize::{self, IsNull, Output, ToSql};
use sql_types;
impl FromSql<sql_types::Bool, Pg> for bool {
fn from_sql(bytes: Option<&[u8]>) -> deserialize::Result<Self> {
match bytes {
Some(bytes) => Ok(bytes[0] != 0),
None => Ok(false),
}
}
}
impl ToSql<sql_types::Bool, Pg> for bool {
fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
out.write_all(&[*self as u8])
.map(|_| IsNull::No)
.map_err(Into::into)
}
}
#[test]
fn bool_to_sql() {
let mut bytes = Output::test();
ToSql::<sql_types::Bool, Pg>::to_sql(&true, &mut bytes).unwrap();
ToSql::<sql_types::Bool, Pg>::to_sql(&false, &mut bytes).unwrap();
assert_eq!(bytes, vec![1u8, 0u8]);
}
#[test]
fn bool_from_sql_treats_null_as_false() {
let result = <bool as FromSql<sql_types::Bool, Pg>>::from_sql(None).unwrap();
assert!(!result);
}