Did you ever want to compare the content of two DbContext and getting a list of all differences between both.

for example, you have one context containing :

  <Root>
    <AUTHOR>
      <AUT_ID>1</AUT_ID>
      <AUT_FIRSTNAME>Cedric</AUT_FIRSTNAME>
      <AUT_LASTNAME>Dumont</AUT_LASTNAME>
    </AUTHOR>
  </Root>

and another containing :

  <Root>
    <AUTHOR>
      <AUT_ID>1</AUT_ID>
      <AUT_FIRSTNAME>Cedric123</AUT_FIRSTNAME>
    </AUTHOR>
  </Root>

you would like to have a message telling you this:

Found at least 2 Differences : 1 / Author.FirstName Should be [Cedric] but was [Cedric123] - object with AUTID : 1_ 2 / Author.LastName Should be [Dumont] but was [(null)] - object with AUTID : 1_

then you would probably check this

PM> Install-Package CExtensions.EntityFramework -Pre

and code this

var comparisonResult = await appContext.CompareTo(expectedContext);

var errorMessage = comparisonResult.ToString();

check whole project on github - CExtensions-Net