How to check if a list is ordered?

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If you are using MSTest, you may want to take a look at CollectionAssert.AreEqual.

Enumerable.SequenceEqual may be another useful API to use in an assertion.

In both cases you should prepare a list that holds the expected list in the expected order, and then compare that list to the result.

Here’s an example:

var studyFeeds = Feeds.GetStudyFeeds(2120, DateTime.Today.AddDays(-200), 20);   
var expectedList = studyFeeds.OrderByDescending(x => x.Date);
Assert.IsTrue(expectedList.SequenceEqual(studyFeeds));

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