Intent of problemMatcher.test|title=ProblemPatternParser single-pattern definitions parses a pattern defined by only a regexp|occurrence=1

All 5 exact tests in this concept. Every test is marked by where it enters the hierarchy.

mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/ 5 tests
- workbench/ 5 tests
  - contrib/ 5 tests
    
    tasks/ 5 tests
    
    test/ 5 tests
    
    common/ 5 tests
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/tasks/test/common/problemMatcher.test|title=ProblemPatternParser single-pattern definitions parses a pattern defined by only a regexp|occurrence=1 Introduced here
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/tasks/test/common/taskConfiguration.test|title=Tasks version 0.1.0 tasks: problem matcher .* regular expression|occurrence=1 Inherited taskConfiguration.test|title=Tasks version 0.1.0 tasks: problem matcher default|occurrence=1, taskConfiguration.test|title=Tasks version 0.1.0 tasks: problem matcher .* regular expression|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/tasks/test/common/taskConfiguration.test|title=Tasks version 0.1.0 tasks: problem matcher default|occurrence=1 Inherited taskConfiguration.test|title=Tasks version 0.1.0 tasks: problem matcher default|occurrence=1, taskConfiguration.test|title=Tasks version 0.1.0 tasks: problem matcher .* regular expression|occurrence=1
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/tasks/test/common/taskConfiguration.test|title=Tasks version 0.1.0 tasks: problem matcher fileLocation and filePrefix|occurrence=1 Inherited problemMatcher.ts ×3
    
    mocha:v1|namespace=vscode@05c208e9e28d8c1c723fa08f85e2b7a96092e8e5|file=vs/workbench/contrib/tasks/test/common/taskConfiguration.test|title=Tasks version 0.1.0 tasks: problem matcher owner, applyTo, severity and fileLocation|occurrence=1 Inherited problemMatcher.ts ×9