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Hi, I am generating code coverage reports using hpc, it works great.

Hi Ozgur,

Is this what you want? https://wiki.haskell.org/Haskell_program_coverage#Example.

That is sort of what I was getting at towards the end of my email:

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My guess is that this is somewhat possible using manually generated .tix files and merging them with the .tix file that is generated in the usual way. However this feels too adhoc, fragile and seems to be too much effort to reach a simple goal.

Maybe I am not fully understanding how it works.

Ozgur

I think you are right about it being fragile and becoming a big overhead in maintenance. Maybe one could add some sort of annotation to the sources for which you wish to check coverage and also modify HPC to handle these?

Hi Ozgur, I personally found the paper describing HPC to be quite descriptive. See especially section 3.3 - it seems like it would be possible to hack something up to remove entries containing "error" for example. That being said, I can't find any reference to the program "hpc-makemtix" aside from that paper. Maybe it got folded back into hpc? Did you make any progress with this? http://www.cs.york.ac.uk/plasma/publications/pdf/GillRuncimanHW07.pdf On Mon, Feb 23, 2015 at 9:19 PM, Ozgur Akgun wrote:

On 23 February 2015 at 20:02, Dominic Steinitz wrote:

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I think you are right about it being fragile and becoming a big overhead in maintenance. Maybe one could add some sort of annotation to the sources for which you wish to check coverage and also modify HPC to handle these?

A simple interface where the user provides a list of function names to be ignored would be a good start.

Something like:

hpc markup prog.tix --destdir=report --ignore=fail,error,impossible,undefined

It _could_ also be a good idea to have a way of ignoring literals. Flags like --ignore-num-literals and --ignore-string-literals could treat all such literals as covered or ignored.

Maybe I should put this as a feature request to the hpc maintainers. I am wondering if they maintain an issue tracker or not.

The wiki pages for hpc aren't very helpful...

(Starting from: https://wiki.haskell.org/GHC/HPC)

Ozgur

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On Mon, Feb 23, 2015 at 9:19 PM, Ozgur Akgun wrote:

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Maybe I should put this as a feature request to the hpc maintainers. I am wondering if they maintain an issue tracker or not.

I don't have any answers to your questions, but just want to let you know that hpc uses the same issue tracker as GHC. There are currently 3 open tickets https://ghc.haskell.org/trac/ghc/query?status=!closed&component=Code+Coverage. Fixes for several long standing issues https://ghc.haskell.org/trac/ghc/query?status=closed&component=Code+Coverage&milestone=7.10.1&milestone=7.12.1 will be included in 7.10 and 7.12. If you find any more bugs, or indeed have a feature request, please report them. -Thomas