c# - NUnit 嵌套集合比较

Question

是否有类似于 CollectionAssert.AreEquivalent() 的东西可以用于嵌套集合？

下面的代码...

CollectionAssert.AreEquivalent ( 
    new Dictionary<int, Dictionary<int, string>>
    {
        { 1, new Dictionary < int, string > { { 10, "foo" }, { 11, "bar" }, { 12, "spam" } } },
        { 2, new Dictionary < int, string > { { 20, "eggs" }, { 21, "eels" } } },
        { 3, new Dictionary < int, string > { { 30, "hovercraft" } } }
    },
    new Dictionary<int, Dictionary<int, string>>
    {
        { 1, new Dictionary < int, string > { { 10, "foo" }, { 11, "bar" }, { 12, "spam" } } },
        { 2, new Dictionary < int, string > { { 20, "eggs" }, { 21, "eels" } } },
        { 3, new Dictionary < int, string > { { 30, "hovercraft" } } }
    } );

抛出这个异常...

Expected: equivalent to
    < [1, System.Collections.Generic.Dictionary`2[System.Int32,System.String]],
    [2, System.Collections.Generic.Dictionary`2[System.Int32,System.String]],
    [3, System.Collections.Generic.Dictionary`2[System.Int32,System.String]] >
But was:
    < [1, System.Collections.Generic.Dictionary`2[System.Int32,System.String]],
    [2, System.Collections.Generic.Dictionary`2[System.Int32,System.String]],
    [3, System.Collections.Generic.Dictionary`2[System.Int32,System.String]] >

以下断言通过:

CollectionAssert.AreEquivalent (
    new Dictionary < int, string > { { 10, "foo" }, { 11, "bar" }, { 12, "spam" } },
    new Dictionary < int, string > { { 10, "foo" }, { 11, "bar" }, { 12, "spam" } } );

如果我对预期的集合进行更改，断言会抛出异常，消息中包含两个集合的全部内容:

Expected: equivalent to < [10, foo], [11, bar], [12, spam] >
But was:  < [10, foo], [11, bar], [12, eggs] >

我正在使用 NUnit 2.4.7.0。

Answer 1

一个老问题，但有人刚刚在 nunit-discuss 上发布了指向它的链接...

失败是因为使用的 NUnit 版本不支持两个字典之间的相等比较，并退回到对象比较。最近的版本不会有这个问题。