feat: add update flag methods to in-memory provider

[gruebel]

This PR

• it is very close to @aepfli implementation, just slightly aligned to the current code style

Related Issues

Fixes #620

[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 6720de68-fc36-4eaf-914b-f8547086462d

📥 Commits

Reviewing files that changed from the base of the PR and between 371aca1 and adaa01f.

📒 Files selected for processing (2)

• openfeature/provider/in_memory_provider.py
• tests/provider/test_in_memory_provider.py

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📝 Walkthrough

Walkthrough

InMemoryProvider now supports complete and individual flag updates, flag lookup, and provider configuration-change events. Tests verify flag replacement and event details for added, replaced, and removed keys.

Changes

In-memory provider updates

Layer / File(s)	Summary
Flag management API openfeature/provider/in_memory_provider.py	Adds APIs to replace all flags, replace one flag, retrieve a flag, and emit configuration-change events with affected keys.
Flag update and event tests tests/provider/test_in_memory_provider.py	Tests complete flag replacement, individual flag updates, flag lookup, changed-key reporting, and event messages.

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

Merge Risk: ⚪ Minimal · up to adaa0

This localized change adds update-flag methods to the in-memory provider, and no actionable merge-blocking risk remains beyond normal checks and review.

Suggested reviewers: aepfli

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 9 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the addition of flag update methods to the in-memory provider.
Description check	✅ Passed	The description identifies the implementation approach and links the change to issue #620, which matches the changeset.
Linked Issues check	✅ Passed	The implementation adds flag-set replacement, single-flag updates, flag retrieval, and provider configuration-change events. Full replacement reports the union of previous and new keys, satisfying iss…
Out of Scope Changes check	✅ Passed	All reported code changes support in-memory provider flag updates or their event behavior. No unrelated changes are present.

Full details: Linked Issues check

Explanation

The implementation adds flag-set replacement, single-flag updates, flag retrieval, and provider configuration-change events. Full replacement reports the union of previous and new keys, satisfying issue #620.

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✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.39%. Comparing base (371aca1) to head (adaa01f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #622      +/-   ##
==========================================
+ Coverage   98.36%   98.39%   +0.02%     
==========================================
  Files          45       45              
  Lines        2514     2561      +47     
==========================================
+ Hits         2473     2520      +47     
  Misses         41       41              

Flag	Coverage Δ
unittests	98.39% <100.00%> (+0.02%)	⬆️

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