Add test for push-to-trunk script.

Add test for push-to-trunk script.

This is a prototype attempt for testing the push-to-trunk script. There are several todos left, but it is not clear if it is worth investing time into those. The test is meant to aid in verifying modifications in the push-to-trunk script.

R=jkummerow@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=17308

[Michael Achenbach, 2013-10-21 11:48:50]

PTAL

[Jakob Kummerow, 2013-10-21 14:58:30]

LGTM with nits -- pretty much rubberstamped.

As discussed offline, I'm fine with landing this, but before investing more time
into bash testing, we should seriously consider porting the script to Python.

https://codereview.chromium.org/32283002/diff/1/tools/test-push-to-trunk.sh
File tools/test-push-to-trunk.sh (right):

https://codereview.chromium.org/32283002/diff/1/tools/test-push-to-trunk.sh#n...
tools/test-push-to-trunk.sh:2: # Copyright 2012 the V8 project authors. All
rights reserved.
nit: 2013

https://codereview.chromium.org/32283002/diff/1/tools/test-push-to-trunk.sh#n...
tools/test-push-to-trunk.sh:36: # TODO(machenbach): Represent test
exectations/mock output without an array
nit: expectations

[Michael Achenbach, 2013-10-22 06:59:41]

Committed patchset #3 manually as r17308 (presubmit successful).