小编Ed *_*les的帖子

如果我有一个包含列表的预期对象图，如下所示：

        var expectedExperiment = new Experiment
        {
            Number= "12345",
            AllocatedInstrument = "Instrument 1",
            Experimenters = new List<Experimenter>
            {
                new Experimenter
                {
                    Name = "Sue"
                    Role = "Scientist",
                    Id = 1,
                    Initials = "S"
                },
                new Experimenter()
                {
                    Name = "Mark",
                    Role = "Technician",
                    Id = 2,
                    Initials = "M"
                },
            }
        };

当我只想在子对象列表中包含某些属性时，如何将其与实际对象进行比较。

例如，我想编写这样的代码来比较所有父对象属性和一些子对象属性：

        actualExperiment.ShouldBeEquivalentTo(expectedExperiment, options => options
            .Including(o => o.Number)
            .Including(o => o.AllocatedInstrument)
            .Including(o => o.Experimenters.Select(e => e.Role))
            .Including(o => o.Experimenters.Select(e => e.Name)));

但我得到一个例外：

System.ArgumentException : Expression <o.Experimenters.Select(e => …