Re: How to properly write tests for kernel functions

2015-11-05 Thread Maxim Pugachev
On Thu, Nov 5, 2015 at 10:54 PM, Greg KH  wrote:
> On Thu, Nov 05, 2015 at 11:43:36AM +0300, Maxim Pugachev wrote:
>> >> So, I'm wondering, whether there is an example or guidelines that is
>> >> worth to follow.
>> >
>> > It all depends on what you want to test.  There is no "general" way to
>> > do this as all subsystems / parts of the kernel are different.
>>
>> I'd like to add more tests in lib/test-hexdump.c. To my mind, I have 2 
>> options:
>> follow the current style, or perform a bit of reorganization. I'm
>> inclined to the
>> second one given that the addition of new tests may lead to unreadable code.
>> But I doubt which way is better in this case.
>
> It's up to you, but if you do reorganize the code, do that in a patch
> series that changes the structure before adding new tests, in order for
> them to be accepted upstream.
>
> good luck!

Greg, thank you for your answers!

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Re: How to properly write tests for kernel functions

2015-11-05 Thread Greg KH
On Thu, Nov 05, 2015 at 11:43:36AM +0300, Maxim Pugachev wrote:
> >> So, I'm wondering, whether there is an example or guidelines that is
> >> worth to follow.
> >
> > It all depends on what you want to test.  There is no "general" way to
> > do this as all subsystems / parts of the kernel are different.
> 
> I'd like to add more tests in lib/test-hexdump.c. To my mind, I have 2 
> options:
> follow the current style, or perform a bit of reorganization. I'm
> inclined to the
> second one given that the addition of new tests may lead to unreadable code.
> But I doubt which way is better in this case.

It's up to you, but if you do reorganize the code, do that in a patch
series that changes the structure before adding new tests, in order for
them to be accepted upstream.

good luck!

greg k-h

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Re: How to properly write tests for kernel functions

2015-11-05 Thread Maxim Pugachev
>> So, I'm wondering, whether there is an example or guidelines that is
>> worth to follow.
>
> It all depends on what you want to test.  There is no "general" way to
> do this as all subsystems / parts of the kernel are different.

I'd like to add more tests in lib/test-hexdump.c. To my mind, I have 2 options:
follow the current style, or perform a bit of reorganization. I'm
inclined to the
second one given that the addition of new tests may lead to unreadable code.
But I doubt which way is better in this case.

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Re: How to properly write tests for kernel functions

2015-11-04 Thread Greg KH
On Thu, Nov 05, 2015 at 12:26:01AM +0300, Maxim Pugachev wrote:
> Hi all,
> 
> I'm trying to understand is there any uniform way to write tests? For
> example, lib/ folder has a bunch of tests, but all of them use various
> technics:
> 
> - pr_warn/pr_err (i.e. printk) or WARN for assertions
> - just tens of functions that check something, or unified macros
> - no naming convention for test cases
> 
> So, I'm wondering, whether there is an example or guidelines that is
> worth to follow.

It all depends on what you want to test.  There is no "general" way to
do this as all subsystems / parts of the kernel are different.

thanks,

greg k-h

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