linux-kernel - Re: [PATCH 2/3] kunit: tool: redo how we construct and mock LinuxSourceTree

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Date:   Wed, 6 Jul 2022 15:04:39 -0400
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     Daniel Latypov <dlatypov@...gle.com>
Cc:     davidgow@...gle.com, linux-kernel@...r.kernel.org,
        kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        skhan@...uxfoundation.org
Subject: Re: [PATCH 2/3] kunit: tool: redo how we construct and mock LinuxSourceTree

On Mon, May 16, 2022 at 3:48 PM 'Daniel Latypov' via KUnit Development
<kunit-dev@...glegroups.com> wrote:
>
> Our main function currently has an optional `linux` argument which is
> used to by our unit tests to inject a mock.
> We currently have the same code copy-pasted several times to do
>   if not linux:
>     linux = MakeRealInstance(cli_args.foo, cli_args.bar, ...)
>
> But in python, dependency injection isn't necessary or idiomatic when we
> can just use mock.patch() to mock things out.
>
> This change
> 1. adds a helper to create a LinuxSourceTree from the cli_args
> 2. drops the `linux` parameter in favor of mocking the __init__ func.
>
> Signed-off-by: Daniel Latypov <dlatypov@...gle.com>

Reviewed-by: Brendan Higgins <brendanhiggins@...gle.com>