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From "Maxim Khutornenko" <ma...@apache.org>
Subject Re: Review Request 27058: Add specs to instances of Mock in Python tests.
Date Thu, 23 Oct 2014 00:20:40 GMT


> On Oct. 22, 2014, 11:24 p.m., Mark Chu-Carroll wrote:
> > src/test/python/apache/aurora/client/cli/test_command_hooks.py, line 252
> > <https://reviews.apache.org/r/27058/diff/1/?file=729290#file729290line252>
> >
> >     I don't think this needs to be a mock at all - I'm pretty sure that you can
just populate a real Response object directly. It looks like a lot of the others are like
this.
> 
> Kevin Sweeney wrote:
>     +1, and since the thrift structs work off dynamic properties, spec is useless here.
Calling the generated kwargs constructor gives you better coverage here, as you can't accidentally
create a thrift struct with a field that doesn't exist without a TypeError

That's not true. Spec works just fine with thrift objects. For example, adding 'spec=TaskConfig'
generates an error where the same test would previously pass:

AttributeError: Mock object has no attribute 'executorConfig'


- Maxim


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/27058/#review57926
-----------------------------------------------------------


On Oct. 22, 2014, 11:18 p.m., David McLaughlin wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/27058/
> -----------------------------------------------------------
> 
> (Updated Oct. 22, 2014, 11:18 p.m.)
> 
> 
> Review request for Aurora, Mark Chu-Carroll and Zameer Manji.
> 
> 
> Bugs: AURORA-248
>     https://issues.apache.org/jira/browse/AURORA-248
> 
> 
> Repository: aurora
> 
> 
> Description
> -------
> 
> Use of Mock() without a specification considered harmful. I went through and updated
as many mocks as I could. 
> 
> Any remaining can be classified as:
> 
> 1) Mocks of classes that cannot be spec'd. Almost all instances of SchedulerProxy, which
uses __getattr__ to delegate to the read or write client. 
> 2) Primitives like strings and callback functions or data objects like dicts and pystachio
structs.
> 3) Weird mocks that broke code where they really shouldn't have (off the top of my head
- in test_diff.py and commands/test_run.py) - both when they were spec'd and when they were
replaced with real thrift structs. 
> 
> 
> The remaining offenders:
> 
> $ grep -r --include="*.py" "Mock()" src/test/python 
> src/test/python/apache/aurora/admin/test_host_maintenance.py:    mock_callback = mock.Mock()
> src/test/python/apache/aurora/admin/test_host_maintenance.py:    mock_callback = mock.Mock()
> src/test/python/apache/aurora/client/api/test_api.py:    mock_proxy = Mock()
> src/test/python/apache/aurora/client/api/test_api.py:    mock_get = Mock()
> src/test/python/apache/aurora/client/api/test_api.py:    mock_task_config = Mock()
> src/test/python/apache/aurora/client/api/test_job_monitor.py:    self._scheduler = Mock()
> src/test/python/apache/aurora/client/api/test_quota_check.py:    self._scheduler = Mock()
> src/test/python/apache/aurora/client/api/test_scheduler_client.py:    client._connect_scheduler
= mock.MagicMock()
> src/test/python/apache/aurora/client/api/test_sla.py:    self._scheduler = Mock()
> src/test/python/apache/aurora/client/api/test_task_util.py:    scheduler = Mock()
> src/test/python/apache/aurora/client/cli/test_diff.py:      job = Mock()
> src/test/python/apache/aurora/client/cli/test_diff.py:      job.assignedTask.task.executorConfig.data
= Mock()
> src/test/python/apache/aurora/client/cli/test_diff.py:        patch('json.loads', return_value=Mock()))
as (_, _, subprocess_patch, _):
> src/test/python/apache/aurora/client/cli/test_diff.py:        patch('json.loads', return_value=Mock()))
as (
> src/test/python/apache/aurora/client/cli/test_diff.py:        patch('json.loads', return_value=Mock()))
as (
> src/test/python/apache/aurora/client/cli/test_inspect.py:    raw_config = Mock()
> src/test/python/apache/aurora/client/cli/test_inspect.py:    mock_task = Mock()
> src/test/python/apache/aurora/client/cli/test_inspect.py:    mock_process = Mock()
> src/test/python/apache/aurora/client/cli/test_kill.py:    mock_scheduler_proxy = Mock()
> src/test/python/apache/aurora/client/cli/test_kill.py:    mock_scheduler_proxy = Mock()
> src/test/python/apache/aurora/client/cli/test_kill.py:    mock_scheduler_proxy = Mock()
> src/test/python/apache/aurora/client/cli/test_kill.py:    mock_scheduler_proxy = Mock()
> src/test/python/apache/aurora/client/cli/util.py:    mock_scheduler_proxy = Mock()
> src/test/python/apache/aurora/client/cli/util.py:    mock_scheduler = Mock()
> src/test/python/apache/aurora/client/cli/util.py:    mock_scheduler_client = Mock()
> src/test/python/apache/aurora/client/cli/util.py:    mock_api_factory = Mock()
> src/test/python/apache/aurora/client/commands/test_diff.py:      job = Mock()
> src/test/python/apache/aurora/client/commands/test_diff.py:      job.assignedTask.task.executorConfig.data
= Mock()
> src/test/python/apache/aurora/client/commands/test_diff.py:        patch('json.loads',
return_value=Mock())) as (
> src/test/python/apache/aurora/client/commands/test_diff.py:        patch('json.loads',
return_value=Mock())) as (
> src/test/python/apache/aurora/client/commands/test_diff.py:        patch('json.loads',
return_value=Mock())) as (
> src/test/python/apache/aurora/client/commands/test_listjobs.py:    mock_options = Mock()
> src/test/python/apache/aurora/client/commands/test_listjobs.py:      job = Mock()
> src/test/python/apache/aurora/client/commands/test_maintenance.py:    mock_callback =
Mock()
> src/test/python/apache/aurora/client/commands/test_maintenance.py:      mock_wait = Mock()
> src/test/python/apache/aurora/client/commands/util.py:    mock_scheduler_proxy = Mock()
> src/test/python/apache/aurora/client/commands/util.py:    mock_api_factory = Mock()
> 
> 
> Diffs
> -----
> 
>   src/test/python/apache/aurora/admin/test_admin_util.py f5c8c69c1109d15ee3886fb863014c3285240db1

>   src/test/python/apache/aurora/client/cli/test_command_hooks.py 9fc6fe2c2063cda494437d83044557b345acacea

>   src/test/python/apache/aurora/client/cli/test_cron.py c7b71c29d44150162fec8066947623fa91815424

>   src/test/python/apache/aurora/client/cli/test_diff.py 10817695352687cdb5b0c3ed9720e3091b230e68

>   src/test/python/apache/aurora/client/cli/test_sla.py a1a3d8161ba747aa23a5e614e9ae31473d2058c1

>   src/test/python/apache/aurora/client/cli/test_status.py 4f62cf0c52e5837309cf7ad702df6d907df8f510

>   src/test/python/apache/aurora/client/cli/test_task_run.py 16fde14c03f6fd2c000e76625fad174835763f1b

>   src/test/python/apache/aurora/client/cli/util.py 3fa609a5f71525393ca0a5dbd81423005fadb583

>   src/test/python/apache/aurora/client/commands/test_cancel_update.py 13aa1fef1d94d46f2837f500606028baa694fa6e

>   src/test/python/apache/aurora/client/commands/test_create.py 4a753fb5942555854538047eb947e5465cdff607

>   src/test/python/apache/aurora/client/commands/test_diff.py c8d01456aa52fd61374b4f0960b5159da2cb235b

>   src/test/python/apache/aurora/client/commands/test_hooks.py d4d8d3cd15704353d958e1ef6b220eaa37696a4d

>   src/test/python/apache/aurora/client/commands/test_kill.py 1e13b926379147295a3a1b3d6ce79a727719dedb

>   src/test/python/apache/aurora/client/commands/test_maintenance.py 13d753f6870c9f552903b077e3c38d306ead5bc4

>   src/test/python/apache/aurora/client/commands/test_restart.py efa0849c1f11d9304e2da981dfb9c1d0ff59a15d

>   src/test/python/apache/aurora/client/commands/test_run.py 0c395f7a8106acf3d45842a6f536dfb74b71a309

>   src/test/python/apache/aurora/client/commands/test_ssh.py abb657ba397c23ddac6c6b188f70d1c4e34597a6

>   src/test/python/apache/aurora/client/commands/test_status.py 639763501348a35bff2f127e18780ac74852f51b

>   src/test/python/apache/aurora/client/commands/test_update.py 07cbe53109e8bcdd09dcac47f6353b10e095717d

> 
> Diff: https://reviews.apache.org/r/27058/diff/
> 
> 
> Testing
> -------
> 
> $ ./pants src/test/python/apache/aurora/:all
> $ build-support/python/checkstyle-check src/test/
> $ build-support/python/isort-check
> 
> 
> Thanks,
> 
> David McLaughlin
> 
>


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