void CreateCmdlet()
 {
     cmdlet               = new TestableInvokeUpdateWorkingDirectoryCmdlet();
     fakeProjectService   = cmdlet.FakeProjectService;
     fakeTerminatingError = cmdlet.FakeCmdletTerminatingError;
 }
 void CreateCmdlet(string solutionFileName = @"d:\projects\MyProject\MyProject.sln")
 {
     cmdlet               = new TestableInvokeUpdateWorkingDirectoryCmdlet(solutionFileName);
     fakeProjectService   = cmdlet.FakeProjectService;
     fakeTerminatingError = cmdlet.FakeCmdletTerminatingError;
 }