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    <p>These are all good answers, this is what I did on a different project:</p> <p><strong><em>Usage:</em></strong></p> <p><strong>Get Today's REAL date Time</strong></p> <pre><code>var today = SystemTime.Now().Date; </code></pre> <p>Instead of using DateTime.Now, you need to use <code>SystemTime.Now()</code>... It's not hard change but this solution might not be ideal for all projects.</p> <p><strong>Time Traveling (Lets go 5 years in the future)</strong></p> <pre><code>SystemTime.SetDateTime(today.AddYears(5)); </code></pre> <p><strong>Get Our Fake "today" (will be 5 years from 'today')</strong></p> <pre><code>var fakeToday = SystemTime.Now().Date; </code></pre> <p><strong>Reset the date</strong></p> <pre><code>SystemTime.ResetDateTime(); </code></pre> <hr> <pre><code>/// &lt;summary&gt; /// Used for getting DateTime.Now(), time is changeable for unit testing /// &lt;/summary&gt; public static class SystemTime { /// &lt;summary&gt; Normally this is a pass-through to DateTime.Now, but it can be overridden with SetDateTime( .. ) for testing or debugging. /// &lt;/summary&gt; public static Func&lt;DateTime&gt; Now = () =&gt; DateTime.Now; /// &lt;summary&gt; Set time to return when SystemTime.Now() is called. /// &lt;/summary&gt; public static void SetDateTime(DateTime dateTimeNow) { Now = () =&gt; dateTimeNow; } /// &lt;summary&gt; Resets SystemTime.Now() to return DateTime.Now. /// &lt;/summary&gt; public static void ResetDateTime() { Now = () =&gt; DateTime.Now; } } </code></pre>
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    1. POUnit Testing: DateTime.Now
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    1. UScrabCRUSHERclamCOLLECTOR
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    1. COThank you, I like this functional aproach. Today (two years later) I am still using a modified version of the TimeProvider class (check the accepted answer), it works really nice.
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      1. USPedro
    2. CO@crabCRUSHERclamCOLI: If you got the idea from http://ayende.com/blog/3408/dealing-with-time-in-tests , then it's A Good Thing to link to it.
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      1. USJohann Gerell
    3. COHey I think I saw the original idea there, I couldn't find the link when I posted this- Thanks! I added a little bit to the original code to make it more usable.
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