postgres-derive 0.3.2

Deriving plugin support for Postgres enum, domain, and composite types
Documentation 
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#[macro_use]
extern crate postgres_derive;
#[macro_use]
extern crate postgres;

use postgres::{Connection, TlsMode};
use postgres::types::WrongType;

mod util;

#[test]
fn defaults() {
    #[derive(Debug, ToSql, FromSql, PartialEq)]
    enum Foo {
        Bar,
        Baz,
    }

    let conn = Connection::connect("postgres://postgres:password@localhost", TlsMode::None)
        .unwrap();
    conn.execute("CREATE TYPE pg_temp.\"Foo\" AS ENUM ('Bar', 'Baz')", &[])
        .unwrap();

    util::test_type(
        &conn,
        "\"Foo\"",
        &[(Foo::Bar, "'Bar'"), (Foo::Baz, "'Baz'")],
    );
}

#[test]
fn name_overrides() {
    #[derive(Debug, ToSql, FromSql, PartialEq)]
    #[postgres(name = "mood")]
    enum Mood {
        #[postgres(name = "sad")]
        Sad,
        #[postgres(name = "ok")]
        Ok,
        #[postgres(name = "happy")]
        Happy,
    }

    let conn = Connection::connect("postgres://postgres:password@localhost", TlsMode::None)
        .unwrap();
    conn.execute(
        "CREATE TYPE pg_temp.mood AS ENUM ('sad', 'ok', 'happy')",
        &[],
    ).unwrap();

    util::test_type(
        &conn,
        "mood",
        &[
            (Mood::Sad, "'sad'"),
            (Mood::Ok, "'ok'"),
            (Mood::Happy, "'happy'"),
        ],
    );
}

#[test]
fn wrong_name() {
    #[derive(Debug, ToSql, FromSql, PartialEq)]
    enum Foo {
        Bar,
        Baz,
    }

    let conn = Connection::connect("postgres://postgres:password@localhost", TlsMode::None)
        .unwrap();
    conn.execute("CREATE TYPE pg_temp.foo AS ENUM ('Bar', 'Baz')", &[])
        .unwrap();

    let err = conn.execute("SELECT $1::foo", &[&Foo::Bar]).unwrap_err();
    assert!(err.as_conversion().unwrap().is::<WrongType>());
}

#[test]
fn extra_variant() {
    #[derive(Debug, ToSql, FromSql, PartialEq)]
    #[postgres(name = "foo")]
    enum Foo {
        Bar,
        Baz,
        Buz,
    }

    let conn = Connection::connect("postgres://postgres:password@localhost", TlsMode::None)
        .unwrap();
    conn.execute("CREATE TYPE pg_temp.foo AS ENUM ('Bar', 'Baz')", &[])
        .unwrap();

    let err = conn.execute("SELECT $1::foo", &[&Foo::Bar]).unwrap_err();
    assert!(err.as_conversion().unwrap().is::<WrongType>());
}

#[test]
fn missing_variant() {
    #[derive(Debug, ToSql, FromSql, PartialEq)]
    #[postgres(name = "foo")]
    enum Foo {
        Bar,
    }

    let conn = Connection::connect("postgres://postgres:password@localhost", TlsMode::None)
        .unwrap();
    conn.execute("CREATE TYPE pg_temp.foo AS ENUM ('Bar', 'Baz')", &[])
        .unwrap();

    let err = conn.execute("SELECT $1::foo", &[&Foo::Bar]).unwrap_err();
    assert!(err.as_conversion().unwrap().is::<WrongType>());
}