Fix float export precision

[mvorisek]

related/needed for sebastianbergmann/phpunit#4972

also add tests for NAN and microoptimize bool dump

[codecov]

Codecov Report

Merging #47 (4ba13fc) into 3.1 (77200c5) will increase coverage by 0.12%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                3.1      #47      +/-   ##
============================================
+ Coverage     96.03%   96.15%   +0.12%     
  Complexity       55       55              
============================================
  Files             1        1              
  Lines           126      130       +4     
============================================
+ Hits            121      125       +4     
  Misses            5        5              

Impacted Files	Coverage Δ
src/Exporter.php	96.15% <100.00%> (+0.12%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[mvorisek]

Hi @sebastianbergmann, can you please look into this PR? For me, the limited exported float precision is a clear bug. a) the exported precision should not depends on php.ini/local configuration, b) full precision should always be exported, otherwise two export numbers can be the same for different values.

[mvorisek]

@sebastianbergmann can I please ask you to merge this bugfix PR and tag a new release?

[sebastianbergmann]

I am sorry, but "also add tests for NAN and microoptimize bool dump" throws me off. Please propose these changes in separate pull requests.

[mvorisek]

I am sorry, but "also add tests for NAN and microoptimize bool dump" throws me off. Please propose these changes in separate pull requests.

done in #48

NAN/INF - this PR is about exporting full precision of float type and NAN/INF tests are related, is it ok to keep them in this PR?

[sebastianbergmann]

Thank you.

Versions 3.1.5 and 4.0.5 have been tagged, sebastianbergmann/phpunit#4972 can be updated.