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: postgres_test.go
    path of file: ./repos/cerbos/internal/storage/db/postgres
    
    the code of the file until where you have to start completion: // Copyright 2021-2024 Zenauth Ltd.
// SPDX-License-Identifier: Apache-2.0

package postgres_test

import (
	"context"
	
    
func createSchema(t *testing.T, url string) {
	t.Helper()

	ctx, cancelFunc := context.WithCancel(context.Background())
	defer cancelFunc()

	conn, err := pgx.Connect(ctx, url)
	require.NoError(t, err)

	defer conn.Close(ctx)

	_, err = conn.Exec(ctx, schemaSQL)
	require.NoError(t, err, "Failed to create schema")
}