title: Where is the Microsoft.VisualStudio.TestTools.UnitTesting namespace on VS2010?
body: <p>I converted a VS2008 solution that contains some unit testing projects to VS2010. After the conversion I tried to compile the solution, but I'm getting the following error:</p>
  
  <blockquote>
    <p>The type or namespace name 'VisualStudio' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?) </p>
  </blockquote>
  
  <p>The namespace declaration cannot be found <code>using Microsoft.VisualStudio.TestTools.UnitTesting;</code>. In addition, I couldn't find the  Microsoft.VisualStudio.QualityTools.UnitTestFramework assembly when I tried to add a new project reference.</p>
  
  <p>Does anyone know what I'm doing wrong?</p>