Build expected metadata with the server's DANDI schema version

[candleindark]

Problem

test_update_dandiset_from_doi fills the schemaVersion and @context of its expected metadata from the DANDI_SCHEMA_VERSION of the client's dandischema, but in the served metadata under test both carry the server's. While dandi-cli and the dandi-archive instance are built against the same dandischema the two coincide and the test passes; once they differ, every parametrization fails on those two fields even when the DOI-derived metadata the test exists to check is correct. The test thus asserts something it was never meant to: that both sides run the same DANDI_SCHEMA_VERSION.

Fix

Build those two fields from the schema version reported by the server's /info/, as the test already does for the other instance-dependent fields (url, repository, manifestLocation).

Where this surfaced

dandi/dandi-schema#419 bumps DANDI_SCHEMA_VERSION to 0.8.0. In that repo's test-dandi-cli matrix, the schema_install: server job installs the branch into the API image only, leaving a released client against a 0.8.0 server. All five parametrizations then fail, while the other 1001 tests in the job pass:

{'schemaVersion': '0.8.0'} != {'schemaVersion': '0.7.0'}
{'@context': '.../releases/0.8.0/context.json'} != {'.../releases/0.7.0/context.json'}

Test plan

• pre-commit hooks pass
• CI, as a no-regression check. It cannot show the benefit, since both sides there run the same released dandischema; that is verified by re-running the server job of Consolidate Asset/Dandiset models; gate publish validation on datePublished dandi-schema#419 once this is merged.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.94%. Comparing base (0dce272) to head (293da2e).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1894      +/-   ##
==========================================
- Coverage   76.96%   76.94%   -0.02%     
==========================================
  Files          88       88              
  Lines       12882    12882              
==========================================
- Hits         9914     9912       -2     
- Misses       2968     2970       +2     

Flag	Coverage Δ
unittests	76.94% <100.00%> (-0.02%)	⬇️

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[yarikoptic]

hm, I think it does make more sense this way! Nice find! Most likely we had this test created BEFORE we exposed version of the schema used by the server. So let's proceed this way indeed.

[github-actions]

🚀 PR was released in 0.76.8 🚀