C# 为什么我在这个MSpec测试中得到一个NullReferenceException？

所以我安装了这些nuget软件包：

在这些引用中达到高潮：

我使用NCrunch。我有这个规格：

namespace GlobPatternMatching.Tests
{
    using FluentAssertions;

    using Machine.Fakes;
    using Machine.Specifications;

    [Subject(typeof(GlobMatching))]
    public class When_Given_Literal : WithSubject<GlobMatching>
    {
        private static string pattern = "path";

        private static string[] result;

        private Establish context => () =>
            {
                pattern = "path";
            };

        private Because of => () => result = Subject.GetGlobs(pattern);

        private It should_return_path_in_the_array = () =>
            {
                result[0].Should().Be("path");
            };
    }
}

TDD'ing直接向上，我得到空引用异常。调试时，我无法单步执行该方法，并且所有的spec类字段都为null

---

我不觉得我遗漏了什么，但如果你不介意看一看，找出我做错了什么，那就好了。我正在使用最新的VS2015、NCrunch等…

你不会相信问题是什么

private Establish context => () =>
{
    pattern = "path";
};

private Because of => () => result = Subject.GetGlobs(pattern);

我把

=>

改为

=

// ----------------------\/-------
private Establish context = () =>
{
    pattern = "path";
};

// ----------------\/------------    
private Because of = () => result = Subject.GetGlobs(pattern);

---

你不会相信问题是什么

private Establish context => () =>
{
    pattern = "path";
};

private Because of => () => result = Subject.GetGlobs(pattern);

我把

=>

改为

=

// ----------------------\/-------
private Establish context = () =>
{
    pattern = "path";
};

// ----------------\/------------    
private Because of = () => result = Subject.GetGlobs(pattern);