Add matrix for testing

[cre8]

adding the matrix testing approach allows us to test it for different versions

[cre8]

@lukasjhan you are correct, it seems that version 18 is and lower is not supported. At this point we have to decide:

• should the crypto-node package include native support with a higher version number
• should it be able to use them with lower support but with the help of external libraries

I haven't looked if we can implement the whole crypto-node stuff without the subtle. Code reusage is not possible then, but on the other hand the amount of functions is small that need to be implemented

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.96%. Comparing base (63256a4) to head (7d96625).

Additional details and impacted files

@@            Coverage Diff             @@
##             next     #111      +/-   ##
==========================================
- Coverage   94.96%   94.96%   -0.01%     
==========================================
  Files          21       21              
  Lines        1530     1529       -1     
  Branches      235      235              
==========================================
- Hits         1453     1452       -1     
  Misses         72       72              
  Partials        5        5              

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[cre8]

So the good news is that the node code is working fine in nodejs v16 18 and 20 :)

But I needed to outcomment the browser test since these tests seem not to be performed as a browser test, but a node test and therefore the tests failed since node subtle is not supported with all requirements.

We should try to find a solution for the browser tests to get them up and running again before merging this

[cre8]

Found a good solution:
according to this issue jsdom is not supporting webcrypto, therefore the tests fail for node 16 and 18. For some reasons it's possible to call it in node 20, so I added a condition that the browser tests are only run in the matrix test when it's executed with at least 20.
Since we are only using the coverage of v20, we get the full coverage support for this. Since we do not have any version specific conditions like "only run this code when you are using v16, otherwise use this".

So we can also make sure the whole code base is running on node 16. I didn't check lower since from my point of view supporting 3 LTS versions should be enough.

[lukasjhan]

3 LTS looks good :)