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Id
2425777
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0
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0
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CreationDate
2010-03-11T14:38:10.990
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2013-10-03T06:55:44.570
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2013-10-03T06:55:44.570
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167149
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167149
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2425721
PostTypeId
2
Score
14
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0
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text
Body
You have some options for doing it: <ol> <li>Use mocking framework and use a DateTimeService (Implement a small wrapper class and inject it to production code). The wrapper implementation will access DateTime and in the tests you'll be able to mock the wrapper class.</li> <li>Use <a href="http://site.typemock.com/typemock-isolator-product/" rel="noreferrer">Typemock Isolator</a>, it can <a href="http://blog.typemock.com/2009/05/mockingfaking-datetimenow-in-unit-tests.html" rel="noreferrer">fake DateTime.Now</a> and won't require you to change the code under test.</li> <li>Use <a href="http://research.microsoft.com/en-us/projects/moles/" rel="noreferrer">Moles</a>, it can also <a href="http://blog.dotnetwiki.org/2010/01/29/UsingMolesToTestDateTimeNowOnChannel9.aspx" rel="noreferrer">fake DateTime.Now</a> and won't require change in production code.</li> </ol> Some examples: Wrapper class using Moq: <pre><code>[Test] public void TestOfDateTime() { var mock = new Mock<IDateTime>(); mock.Setup(fake => fake.Now) .Returns(new DateTime(2000, 1, 1)); var result = new UnderTest(mock.Object).CalculateSomethingBasedOnDate(); } public class DateTimeWrapper : IDateTime { public DateTime Now { get { return DateTime.Now; } } } </code></pre> Faking DateTime directly using Isolator: <pre><code>[Test] public void TestOfDateTime() { Isolate.WhenCalled(() => DateTime.Now).WillReturn(new DateTime(2000, 1, 1)); var result = new UnderTest().CalculateSomethingBasedOnDate(); } </code></pre> Disclaimer - I work at Typemock
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