Temporarily assign to Nooger. yllin, you can try to see if there's something can be improved here.

Start to study  issue 577601 .

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/factory/+/f9811615f9feb32522cf1dec6196097db0491f48

commit f9811615f9feb32522cf1dec6196097db0491f48
Author: Yilun Lin <yllin@google.com>
Date: Fri Feb 24 05:25:16 2017

goofy: Move from autotest to pytest in test_list_iterator_unittest.

BUG= chromium:677368 
TEST=make test

Change-Id: Ica7e42b4ccf783b11a735fc82ff5092ddd0d00eb
Reviewed-on: https://chromium-review.googlesource.com/446180
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Wei-Han Chen <stimim@chromium.org>

[modify] https://crrev.com/f9811615f9feb32522cf1dec6196097db0491f48/py/goofy/test_list_iterator_unittest.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/factory/+/6ae5006ed230ed3162ad4a6bca0b9ef9790945dd

commit 6ae5006ed230ed3162ad4a6bca0b9ef9790945dd
Author: Yilun Lin <yllin@google.com>
Date: Wed Mar 01 06:33:47 2017

goofy: Move from autotest to pytest in goofy_unitest

BUG= chromium:677368 
TEST=make test

Change-Id: I841cf0e3df35ad40c16557eb10ff7483b0df3ad3
Reviewed-on: https://chromium-review.googlesource.com/446263
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Wei-Han Chen <stimim@chromium.org>

[modify] https://crrev.com/6ae5006ed230ed3162ad4a6bca0b9ef9790945dd/py/goofy/goofy_unittest.py

During the fixing of goofy_unittest running time issue (b/32721371), I found there is many unnecessary complicated dependency between invocation.py and goofy.py (both of them use properties of each other), possibly due to original support of autotest.

Currently the calling path for a test is something like:
goofy -> invocation -> goofy -> autotest_prespawner/pytest_prespawner

When it is pytest_prespawner, the call is actually back to invocation again: (pytest_prespawner is invocation itself)
goofy -> invocation -> goofy -> pytest_prespawner -> invocation (spawn)

If we remove autotest_prespawner, I think we can just drop the layer of prespawner here, so it becomes:
goofy -> invocation -> invocation (spawn)

By doing this, we can define the role more clearly:
goofy: scheduling tests, and run invocation.
invocation: handle the spawn of pytest.

Then we can finally have unittest for invocation. This will further reduce the testing time for goofy_unittest. (Currently goofy_unittest takes about 45s on non-SSD machine, still pretty slow compared to other unittests in our repo), and make the code clear.

What do you think?

Totally fine. Just drop it.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/factory/+/b45b3c8e4e788d7d505935d6d897ea84820080f0

commit b45b3c8e4e788d7d505935d6d897ea84820080f0
Author: Yilun Lin <yllin@google.com>
Date: Mon Mar 20 07:44:58 2017

test_list: Replace autotest hardware_SAT with pytest stressapptest.

Deprecate autotest.
Set StressAppTest free_memory_only default to true.

BUG= chromium:677368 
TEST=make overlay-chell; check `overlay-chell/bin/factory dump-test-list`

Change-Id: Icaf13b3c40d37f8fc3ee6f6969f5be1ab70707b8
Reviewed-on: https://chromium-review.googlesource.com/456977
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Shun-Hsing Ou <shunhsingou@chromium.org>

[modify] https://crrev.com/b45b3c8e4e788d7d505935d6d897ea84820080f0/py/test/pytests/stressapptest.py
[modify] https://crrev.com/b45b3c8e4e788d7d505935d6d897ea84820080f0/py/test/test_lists/generic_rrt.py
[modify] https://crrev.com/b45b3c8e4e788d7d505935d6d897ea84820080f0/py/test/test_lists/firmware_stress_generic.py
[modify] https://crrev.com/b45b3c8e4e788d7d505935d6d897ea84820080f0/py/test/test_lists/generic_run_in.py
[modify] https://crrev.com/b45b3c8e4e788d7d505935d6d897ea84820080f0/py/test/test_lists/generic_smt.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/factory/+/3348598ee6be78df2c8524b509f9f0bee37d8faf

commit 3348598ee6be78df2c8524b509f9f0bee37d8faf
Author: Yilun Lin <yllin@google.com>
Date: Tue Mar 21 08:17:22 2017

test: Deprecate autotest.

CQ-DEPEND=CL:456724
BUG= chromium:677368 
TEST=make test

Change-Id: Ic4ee6c313b2b5714fd5651408075b0440ebfd29c
Reviewed-on: https://chromium-review.googlesource.com/456665
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Wei-Han Chen <stimim@chromium.org>

[modify] https://crrev.com/3348598ee6be78df2c8524b509f9f0bee37d8faf/py/test/factory.py
[modify] https://crrev.com/3348598ee6be78df2c8524b509f9f0bee37d8faf/py/test/test_lists/test_lists.py
[delete] https://crrev.com/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5/py/test/autotest_common.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/factory/+/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5

commit b10e8cfe0742f5b6634df1919b319aa73cd5f0c5
Author: Yilun Lin <yllin@google.com>
Date: Tue Mar 21 08:17:22 2017

goofy: Deprecate autotest.

BUG= chromium:677368 
TEST=make test

Change-Id: I2b511c7621d9de7bd559cf0327170267902e4bb6
Reviewed-on: https://chromium-review.googlesource.com/456724
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Shun-Hsing Ou <shunhsingou@chromium.org>

[modify] https://crrev.com/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5/py/goofy/goofy_remote.py
[modify] https://crrev.com/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5/py/goofy/invocation.py
[modify] https://crrev.com/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5/py/tools/factory.py
[modify] https://crrev.com/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5/py/goofy/test_environment.py
[modify] https://crrev.com/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5/py/goofy/prespawner.py
[modify] https://crrev.com/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5/py/goofy/goofy.py
[modify] https://crrev.com/b10e8cfe0742f5b6634df1919b319aa73cd5f0c5/py/tools/factory_diff.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/factory/+/88cafa7438b00cac2a07d5d90bfc4376993bd735

commit 88cafa7438b00cac2a07d5d90bfc4376993bd735
Author: Yilun Lin <yllin@google.com>
Date: Tue Mar 21 12:02:08 2017

shopfloor: Deprecate autotest.

Remove `autotest` directory in factory.tar.bz2.

BUG= chromium:677368 
TEST=make test

Change-Id: I316957fd972017421c3c1fcb62fd41cb886158b9
Reviewed-on: https://chromium-review.googlesource.com/456892
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Yilun Lin <yllin@chromium.org>

[modify] https://crrev.com/88cafa7438b00cac2a07d5d90bfc4376993bd735/py/shopfloor/shopfloor_unittest.py
[modify] https://crrev.com/88cafa7438b00cac2a07d5d90bfc4376993bd735/py/shopfloor/testdata/factory.tar.bz2
[modify] https://crrev.com/88cafa7438b00cac2a07d5d90bfc4376993bd735/py/shopfloor/factory_update_server_unittest.py
[modify] https://crrev.com/88cafa7438b00cac2a07d5d90bfc4376993bd735/py/shopfloor/factory_update_server.py