tools: expose skip output to test runner

In the TAP protocol, skips are flagged as ok. Expose more
information so we can understand if the test was skipped or not.

PR-URL: https://github.com/nodejs/io.js/pull/2130
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

tools/test.py

@@ -49,6 +49,7 @@ from datetime import datetime
 from Queue import Queue, Empty
 
 logger = logging.getLogger('testrunner')
+skip_regex = re.compile(r'# SKIP\S*\s+(.*)', re.IGNORECASE)
 
 VERBOSE = False
 
@@ -255,6 +256,11 @@ class TapProgressIndicator(SimpleProgressIndicator):
         logger.info('#' + l)
       for l in output.output.stdout.splitlines():
         logger.info('#' + l)
+    else:
+      skip = skip_regex.search(output.output.stdout)
+      if skip:
+        logger.info(
+          'ok %i - %s # skip %s' % (self._done, command, skip.group(1)))
       else:
         logger.info('ok %i - %s' % (self._done, command))