Added CTest command --print-labels

This command allows a user to quickly see the list of all available
test labels.  The labels are also printed in verbose show only mode,
alongside their corresponding tests.

1 files changed, 7 insertions, 2 deletions

diff --git a/Source/CTest/cmCTestTestHandler.cxx b/Source/CTest/cmCTestTestHandler.cxx
index a4a4863..6dd348d 100644
--- a/Source/CTest/cmCTestTestHandler.cxx
+++ b/Source/CTest/cmCTestTestHandler.cxx
@@ -567,7 +567,7 @@ int cmCTestTestHandler::ProcessHandler()
 
   if (total == 0)
     {
-    if ( !this->CTest->GetShowOnly() )
+    if ( !this->CTest->GetShowOnly() && !this->CTest->ShouldPrintLabels() )
       {
       cmCTestLog(this->CTest, ERROR_MESSAGE, "No tests were found!!!"
         << std::endl);
@@ -1079,7 +1079,12 @@ void cmCTestTestHandler::ProcessDirectory(std::vector<cmStdString> &passed,
   parallel->SetPassFailVectors(&passed, &failed);
   this->TestResults.clear();
   parallel->SetTestResults(&this->TestResults);
-  if(this->CTest->GetShowOnly())
+
+  if(this->CTest->ShouldPrintLabels())
+    {
+    parallel->PrintLabels();
+    }
+  else if(this->CTest->GetShowOnly())
     {
     parallel->PrintTestList();
     }