private static void VerifyDbExpression(SqlVersion sqlVersion, DbExpression expr, string expectedSql, out ExpressionGenerator generator)
{
generator = new ExpressionGenerator()
{
SqlVersion = sqlVersion,
SqlBuilder = new IndentedStringBuilder(),
ModelAliasManager = new ModelAliasManagerMock()
};
expr.Accept(generator);
Assert.AreEqual(expectedSql, generator.SqlBuilder.ToString());
}