Fix OAuth2 userinfo request crash when endpoint is present but None

[dpage]

Summary

• OAuth2Authentication.get_user_profile() guarded the userinfo request with 'OAUTH2_USERINFO_ENDPOINT' not in self.oauth2_config[...], which tests key presence, not truthiness. config.py's shipped OAUTH2_CONFIG template entry ships 'OAUTH2_USERINFO_ENDPOINT': None, so a config copied from that template (as documented) has the key present with a None value — the check passes, and the code proceeds to call client.get(None), raising requests.exceptions.MissingSchema: Invalid URL 'None' instead of skipping the call (for an OIDC provider that supplies claims via ID token / discovery) or logging the intended "not configured" message.
• Changed the check to test truthiness (if not self.oauth2_config[...].get('OAUTH2_USERINFO_ENDPOINT')), so an explicit None is treated the same as an absent key.

Test plan

• Added web/pgadmin/authenticate/tests/test_oauth2_userinfo_endpoint.py, exercising get_user_profile() directly with a config carrying OAUTH2_USERINFO_ENDPOINT: None, asserting the userinfo client is never called.
• Confirmed the test fails against the pre-fix not in check and passes with the fix.
• pycodestyle clean on the changed/added files.

Closes #10349

Summary by CodeRabbit

• Bug Fixes

  • Improved OAuth2 authentication handling when the user information endpoint is missing or unavailable.
  • Prevented unnecessary requests to unavailable endpoints, returning an empty profile instead.

• Tests

  • Added regression coverage for OAuth2 configurations without a user information endpoint.

[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

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Run ID: 5e40e68e-aa75-4716-9c3f-c17911e2377d

📥 Commits

Reviewing files that changed from the base of the PR and between bc58657 and 9f77a12.

📒 Files selected for processing (2)

• web/pgadmin/authenticate/oauth2.py
• web/pgadmin/authenticate/tests/test_oauth2_userinfo_endpoint.py

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Walkthrough

The OAuth2 profile lookup now treats a missing or falsy OAUTH2_USERINFO_ENDPOINT as unavailable. A regression test verifies that an explicit None value returns an empty profile without making an HTTP request.

Changes

OAuth2 user-info handling

Layer / File(s)	Summary
Guard unavailable endpoints and add regression coverage web/pgadmin/authenticate/oauth2.py, web/pgadmin/authenticate/tests/test_oauth2_userinfo_endpoint.py	The endpoint check now handles missing or falsy values. The regression test verifies that None returns {} without calling the HTTP client.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: ⚪ Minimal · up to 9f77a

This PR prevents an invalid userinfo request when the endpoint is explicitly unset and adds coverage for that behavior; no actionable merge-blocking risk remains.

Suggested reviewers: asheshv

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the OAuth2 crash caused by a userinfo endpoint set to None.
Linked Issues check	✅ Passed	The change satisfies issue #10349 by treating a missing or None OAUTH2_USERINFO_ENDPOINT as unconfigured and adding a regression test that confirms no HTTP request occurs.
Out of Scope Changes check	✅ Passed	All changes support issue #10349. The implementation change and regression test are directly related to the reported OAuth2 crash.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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