Update TestExplorerTests.cs
Update TestExplorerTests.cs

Fix for RunAllUnittestProject test
zooba/PTVS,int19h/PTVS,int19h/PTVS,int19h/PTVS,int19h/PTVS,int19h/PTVS,zooba/PTVS,zooba/PTVS,zooba/PTVS,zooba/PTVS,zooba/PTVS,int19h/PTVS