public void command_with_rows_should_return_first_row_with_FirstOrDefault()
{
var table = new FakeTable(new[] { "Id" }, new[] { new object[] { "10" } });
var cmd = new FakeCommand(table);
cmd.CommandText = "MustBespecifiedForFakeCmd";
var actual = cmd.FirstOrDefault(new TentityMapper());
actual.Id.Should().Be("10");
}