Support for Path Coverage

[mbrodala]

Starting with version 2.3.0 Xdebug supports collecting branch coverage data.

This package and thus phpunit should use this new feature to gather and output branch coverage in addition to the existing sequence/line coverage.

[sebastianbergmann]

This is already being worked on in the https://github.com/sebastianbergmann/php-code-coverage/tree/feature/path-coverage branch. However, I don't think this will be finished anytime soon.

[mbrodala]

Good to know that it's already WIP, thanks. :-)

[omid1234]

@sebastianbergmann Could we expect any progress here implementing the branch coverage and Dead Code metric in PHPUnit? Please, that is so useful for us and increase the report value of the tool a lot:) Thanks in advance 👍

[sebastianbergmann]

I lack the time to work on this, sorry.

[dakorpar]

@sebastianbergmann any status update on this one?

[VincentChataignier]

@sebastianbergmann Is this issue still relevant ? Can I submit a PR about this ?
@Maks3w I think you have already worked about branch coverage. Do you have code or PR that I can pick up ?

Thanks 😃

[sebastianbergmann]

Resource consumption of Xdebug's branch coverage, time and memory usage, is quite high, even for trivial classes and methods. In light of this, I am not sure how useful support for branch coverage in this component would be.

That being said, I would, of course, consider a pull request that implements this.

However, before anyone starts working on an actual implementation: please prototype the visualisation first.

[sebastianbergmann]

This visualisation proposed by @derickr is a good start.

However, I am not sure how well this will work for real world code with hundreds or thousands (or even more) possible execution paths.

[TiMESPLiNTER]

Any updates about path coverage? Either using xdebug or phpdbg?

[adam-rocska]

Is this a sick funking joke? Since 2015 there's no progress whatsoever? Even version 9's documentations states "The Opcode Coverage, Branch Coverage, and Path Coverage software metrics are not yet supported by php-code-coverage."... shameful.