sqlx 0.2.5

🧰 The Rust SQL Toolkit.
Documentation 
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use sqlx::decode::Decode;
use sqlx::encode::Encode;

#[derive(PartialEq, Debug, Encode, Decode)]
struct Foo(i32);

#[test]
#[cfg(feature = "mysql")]
fn encode_mysql() {
    encode_with_db::<sqlx::MySql>();
}

#[test]
#[cfg(feature = "postgres")]
fn encode_postgres() {
    encode_with_db::<sqlx::Postgres>();
}

#[allow(dead_code)]
fn encode_with_db<DB: sqlx::Database>()
where
    Foo: Encode<DB>,
    i32: Encode<DB>,
{
    let example = Foo(0x1122_3344);

    let mut encoded = Vec::new();
    let mut encoded_orig = Vec::new();

    Encode::<DB>::encode(&example, &mut encoded);
    Encode::<DB>::encode(&example.0, &mut encoded_orig);

    assert_eq!(encoded, encoded_orig);
}

#[test]
#[cfg(feature = "mysql")]
fn decode_mysql() {
    decode_with_db::<sqlx::MySql>();
}

#[test]
#[cfg(feature = "postgres")]
fn decode_postgres() {
    decode_with_db::<sqlx::Postgres>();
}

#[allow(dead_code)]
fn decode_with_db<DB: sqlx::Database>()
where
    Foo: Decode<DB> + Encode<DB>,
{
    let example = Foo(0x1122_3344);

    let mut encoded = Vec::new();
    Encode::<DB>::encode(&example, &mut encoded);

    let decoded = Foo::decode(&encoded).unwrap();
    assert_eq!(example, decoded);
}