Fixes from getting testrepository running with v2.

filters/subunit-ls

@@ -19,7 +19,9 @@
 from optparse import OptionParser
 import sys
 
-from testtools import StreamToExtendedDecorator, StreamResultRouter
+from testtools import (
+    CopyStreamResult, StreamToExtendedDecorator, StreamResultRouter,
+    StreamSummary)
 
 from subunit import ByteStreamToStreamResult
 from subunit.filters import run_tests_from_stream
@@ -33,23 +35,24 @@ parser = OptionParser(description=__doc__)
 parser.add_option("--times", action="store_true",
     help="list the time each test took (requires a timestamped stream)",
         default=False)
+parser.add_option("--exists", action="store_true",
+    help="list tests that are reported as existing (as well as ran)",
+        default=False)
 parser.add_option("--no-passthrough", action="store_true",
     help="Hide all non subunit input.", default=False, dest="no_passthrough")
 (options, args) = parser.parse_args()
 test = ByteStreamToStreamResult(sys.stdin, non_subunit_name="stdout")
-printer = TestIdPrintingResult(sys.stdout, options.times)
-result = StreamToExtendedDecorator(printer)
+result = TestIdPrintingResult(sys.stdout, options.times, options.exists)
 if not options.no_passthrough:
-    orig_result = result
     result = StreamResultRouter(result)
     cat = CatFiles(sys.stdout)
     result.map(cat, 'test_id', test_id=None)
-else:
-    orig_result = result
-orig_result.startTestRun()
+summary = StreamSummary()
+result = CopyStreamResult([result, summary])
+result.startTestRun()
 test.run(result)
-orig_result.stopTestRun()
-if printer.wasSuccessful():
+result.stopTestRun()
+if summary.wasSuccessful():
     exit_code = 0
 else:
     exit_code = 1