Merge branch '4067' into 'master'

DSE-CLI: Skip Validation if no Solution is Present

See merge request af3/af3!373

org.fortiss.af3.exploration/src/org/fortiss/af3/exploration/cli/.ratings

 ExecuteDSECommandLineHandler.java 4d80dee08bbf5f66d460bcdd158aaf3c96b654ab GREEN
 TestCaseGenerationCommandLineHandler.java ccd942515f5490ff9ed6ece891f3ade206333a08 GREEN
-ValidateDSESolutionCommandLineInterface.java 47d7ffc80526e670ac149a2c18100ca6cc8ee19b GREEN
+ValidateDSESolutionCommandLineInterface.java 1b882428463c21c355d96c883af428d3fa4cce2d GREEN

org.fortiss.af3.exploration/src/org/fortiss/af3/exploration/cli/ValidateDSESolutionCommandLineInterface.java

@@ -96,6 +96,12 @@ public class ValidateDSESolutionCommandLineInterface implements ICommandLineSwit
 
 		SolutionSelectionStep solStep = (SolutionSelectionStep)currentStep;
 		SingleExplorationSolution singleSolution = solStep.getSelectedSolution();
+		if(singleSolution == null) {
+			info(AF3ExplorationActivator.getDefault(), "The DSE project " + matchingDSE.getName() +
+					" does not contain a solution that can be validated.");
+			return;
+		}
+
 		boolean isSolutionValidated = false;
 		try {
 			isSolutionValidated = validateSingleSolution(solStep);