Scope history record lookup by context key

[msallin]

Summary

SqliteDropCreateDatabaseWhenModelChanges writes the context name onto every history record and documents that a database may be shared by more than one context. The lookup, however, used SingleOrDefault() with no Context filter, so it ignored that scoping entirely.

On a history table that contains rows for more than one context the unscoped lookup matches multiple records:

• IsSameModel catches the resulting InvalidOperationException and reports a model change (unnecessary drop/recreate).
• SaveHistory does not guard it and throws.

Changes

• GetHistoryRecord now looks the record up by context.GetType().FullName, matching the key SaveHistory writes.
• Extracted the selection into a small internal HistoryRecordSelector helper so the logic is unit-testable without a database.

Tests

Added HistoryRecordSelectorTest: correct record returned for a given context, null when none match or the table is empty, and the one-record-per-context invariant surfaced as an exception if violated. Full suite green (51 tests).

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: b277f780-a056-41a4-b88f-a963b4f557a3

📥 Commits

Reviewing files that changed from the base of the PR and between e019947 and c214040.

📒 Files selected for processing (3)

• SQLite.CodeFirst.Test/UnitTests/Utility/HistoryRecordSelectorTest.cs
• SQLite.CodeFirst/Internal/Utility/HistoryRecordSelector.cs
• SQLite.CodeFirst/Public/DbInitializers/SqliteDropCreateDatabaseWhenModelChanges.cs

🚧 Files skipped from review as they are similar to previous changes (3)

• SQLite.CodeFirst/Public/DbInitializers/SqliteDropCreateDatabaseWhenModelChanges.cs
• SQLite.CodeFirst/Internal/Utility/HistoryRecordSelector.cs
• SQLite.CodeFirst.Test/UnitTests/Utility/HistoryRecordSelectorTest.cs

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📝 Walkthrough

Walkthrough

Adds an internal HistoryRecordSelector utility with a SelectForContext method that uses SingleOrDefault to find the IHistory record whose Context matches a given key. GetHistoryRecord in SqliteDropCreateDatabaseWhenModelChanges is updated to use this selector with context.GetType().FullName. Four unit tests cover the matching and edge-case behaviors.

Changes

Context-scoped history record selection

Layer / File(s)	Summary
HistoryRecordSelector implementation and integration SQLite.CodeFirst/Internal/Utility/HistoryRecordSelector.cs, SQLite.CodeFirst/Public/DbInitializers/SqliteDropCreateDatabaseWhenModelChanges.cs	Introduces an internal static HistoryRecordSelector.SelectForContext that matches IHistory records by Context via SingleOrDefault. GetHistoryRecord is updated to enumerate query results and delegate to this selector using context.GetType().FullName as the key.
Unit tests SQLite.CodeFirst.Test/UnitTests/Utility/HistoryRecordSelectorTest.cs	Adds HistoryRecordSelectorTest with a Record factory helper and four tests: match found, no match, empty list, and duplicate-context throw.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐇 A hop through the history, context in paw,
SingleOrDefault — the cleanest of law.
No more ambiguity, no double match throw,
Each context finds just its own row below.
The rabbit tests all four: match, null, empty, and boom —
Tidy and tested, there's plenty of room! 🌿

🚥 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%.	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 'Scope history record lookup by context key' clearly and concisely summarizes the main change: filtering history record lookups by context key rather than matching unscoped records.
Description check	✅ Passed	The description is well-related to the changeset, explaining the context scoping issue, the problems it causes, the implemented solution, and the added tests.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/history-record-context-scope

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[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