You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mod.rs
    path of file: ./repos/prisma-engines/schema-engine/sql-introspection-tests/tests/relations_with_compound_fk
    
    the code of the file until where you have to start completion: mod cockroachdb;
mod mssql;
mod mysql;
mod postgres;
mod sqlite;

use barrel::types;
use expect_test::expect;
use sql_introspection_tests::test_api::*;
use test_macros::test_connector;

#[test_connector(exclude(Sqlite, Mysql, CockroachDb))]
async fn compound_foreign_keys_for_one_to_one_relations(api: &mut TestApi) -> TestResult {
    api.barrel()
        .execute(move |migration| {
            migration.create_table("User", |t| {
                t.add_column("id", types::integer().increments(true));
                t.add_column("age", types::integer());

                t.add_index("user_unique", types::index(vec!["id", "age"]).unique(true));
                t.add_constraint("User_pkey", types::primary_constraint(["id"]));
            });

            migration.create_table("Post", move |t| {
                t.add_column("id", types::integer().increments(true));
                t.add_column("user_id", types::integer().nullable(true));
                t.add_column("user_age", types::integer().nullable(true));

                t.add_constraint(
                    "Post_user_id_user_age_fkey",
                    type
    
async fn a_compound_fk_pk_with_overlapping_primary_key(api: &mut TestApi) -> TestResult {
    api.barrel()
        .execute(|migration| {
            migration.create_table("a", |t| {
                t.add_column("one", types::integer().nullable(false));
                t.add_column("two", types::integer().nullable(false));

                t.set_primary_key(&["one", "two"]);
            });
            migration.create_table("b", |t| {
                t.add_column("dummy", types::integer().nullable(false));
                t.add_column("one", types::integer().nullable(false));
                t.add_column("two", types::integer().nullable(false));

                t.add_constraint(
                    "b_one_two_fkey",
                    types::foreign_constraint(&["one", "two"], "a", &["one", "two"], None, None),
                );
                t.set_primary_key(&["dummy", "one", "two"]);
            });
        })
        .await?;

    let expected = expect![[r#"
        model a {
          one Int
          two Int
          b   b[]

          @@id([one, two])
        }

        model b {
          dummy Int
          one   Int
          two   Int
          a     a   @relation(fields: [one, two], references: [one, two], onDelete: NoAction, onUpdate: NoAction)

          @@id([dummy, one, two])
        }
    "#]];

    expected.assert_eq(&api.introspect_dml().await?);

    Ok(())
}