public static void AddPrimaryKey()
{
var constraint = new SqlTableConstraint(ConstraintType.PrimaryKey, new[] { "id" });
var statement = new AlterTableStatement(ObjectName.Parse("test"), new AddConstraintAction(constraint));
var sql = statement.ToString();
var expected = new StringBuilder();
expected.Append("ALTER TABLE test ADD CONSTRAINT PRIMARY KEY(id)");
Assert.AreEqual(expected.ToString(), sql);
}