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