V8: Reduce test expectations by whitelisting

scripts/slave/recipes/v8.py

Index: scripts/slave/recipes/v8.py
diff --git a/scripts/slave/recipes/v8.py b/scripts/slave/recipes/v8.py
index 4c969316865efb605aedbb250ae82586c59eca5a..a564f9b54798e86e5cc8f37c1f0c241ec67e1a7e 100644
--- a/scripts/slave/recipes/v8.py
+++ b/scripts/slave/recipes/v8.py
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+from recipe_engine.post_process import Filter
+
 DEPS = [
   'archive',
   'chromium',
@@ -121,7 +123,10 @@ def GenTests(api):
         'V8 Linux',
         'swarming_collect_failure',
     ) +
-    api.step_data('Check', retcode=1)
+    api.step_data('Check', retcode=1) +
+    api.post_process(Filter('Check')) +
+    api.post_process(Filter('Test262')) +
+    api.post_process(Filter('$result'))

[iannucci1, 2016/11/01 20:21:51]

Hm... I would expect this to remove all of the steps from your expectation.
You're telling it:
  * Remove all the steps except 'Check'
  * THEN Remove all the steps except 'Test262'
  * THEN Remove all the steps except '$result'

Maybe you want `Filter('Check', 'Test262', '$result')`?

I'm surprised that it's not completely removing this expectation file, though.
I'll look into that.

[Michael Achenbach, 2016/11/01 20:25:20]

Ah, yes you're right! Will change that.

   )
 
   # Simulate a tryjob triggered by the CQ for setting up different swarming