anchor.diff:  #import("../compiler/tests/dartc/test_config.dart");
   #import("../frog/tests/await/test_config.dart");
   #import("../runtime/tests/vm/test_config.dart");
  -#import("../samples/tests/samples/test_config.dart");
   #import("../tests/co19/test_config.dart");
   #import("../tests/standalone/test_config.dart");
   
  
positive.code:   'frog/tests/frog_native',
    'frog/tests/leg',
    'frog/tests/leg_only',
    'tests/benchmark_smoke',
    'tests/corelib',
    'tests/dom',
  
negative.code: 
      var conf = configurationIterator.next();
      for (String key in selectors.getKeys()) {
        if (key == 'standalone') {
          queue.addTestSuite(new StandaloneTestSuite(conf));
        } else if (key == 'co19') {
          queue.addTestSuite(new Co19TestSuite(conf));
  