Fix newly introduced bug when opening Zarr arrays

[meggart]

No description provided.

[felixcremer]

We should add a test for that.

[felixcremer]

I added a test for that and switched the test data to using esdc.
Surprisingly the comparison between the to_dataset results are failing, that is why I switched to doing the tests in a for loop on the different loading ways.

[meggart]

Any idea where the netcdf-related error is coming from? Is it related to this change?

[felixcremer]

I don't think it is coming from these changes, because we don't touch the Netcdf path at all. I actually wanted to ask you the same.

[meggart]

@felixcremer Looks like in the test we are trying to store a Rational in a NetCDF file, this can not work. Did this work in previous versions?

[felixcremer]

Ups. Then I broke the tests by adding to much tests. I think that didn't work in previous versions. Then I broke the tests in #50.

[felixcremer]

I fixed it and the tests pass locally. I had to do a force-push since I merged master locally.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 51.44%. Comparing base (079e030) to head (49e0947).
⚠️ Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
ext/ZarrExt.jl	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #51      +/-   ##
==========================================
+ Coverage   51.03%   51.44%   +0.40%     
==========================================
  Files          12       12              
  Lines         482      484       +2     
==========================================
+ Hits          246      249       +3     
+ Misses        236      235       -1     

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[felixcremer]

The failure on windows nightly and stable seem to be an unrelated downloading time out error which comes from Downloads.download.