WIP Upgrade to Schemathesis v4

[juhoinkinen]

WIP

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[juhoinkinen]

In addition to upgrading to Schemathesis 4, this PR currently enables strict_validation in Connexion "to disallow any extra parameters that are not defined in your specification". I think this would be a good feature, because then typos in API requests parameters are noticed at once, not after debugging (with strict validation e.g. using theshold instead of threshold gives 400 Bad request error, without it the extra, nonfunctional parameter is just silently ignored).

However, Annif 1.4 introduced metadata_* parameters to suggest/, suggest_batch/ and learn/ API methods (#867), and to return a 400 error for requests with parameters not starting with metadata_ I made this commit: Add Custom request body validator.

But because of this, Schemathesis 4.7 (correctly) complains:

  | - API rejected schema-compliant request
  | 
  |     Valid data should have been accepted
  |     Expected: 2xx, 401, 403, 404, 409, 5xx
  | 
  | [400] Bad Request:
  | 
  |     `{"type": "about:blank", "title": "Bad Request", "detail": "Extra formData parameter(s) x-schemathesis-additional not in spec", "status": 400}`
  | 
  | Reproduce with: 
  | 
  |     curl -X POST -H 'Content-Type: application/x-www-form-urlencoded' -d 'language=&limit=10&text=&threshold=0&x-schemathesis-additional=' http://localhost/v1/projects/dummy-fi/suggest

Schemathesis should be configurable to ignore this, but I did not manage in that for now.

@osma what do you think about enabling the strict validation and the custom validator? Those could and should be done in another PR than this, if we want start using those.