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Complete AL review knowledge readiness (#108)
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* Complete AL review knowledge readiness

Fill telemetry and Query coverage, strengthen thin review domains, correct audited content defects, and add deterministic cheap-model evaluation and reference-integrity safeguards.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 9825b012-e653-496a-9310-c1f4b6f8ac27

* Generalize review fixture discovery

Derive smoke cases from the leaf, domain, and paired-sample conventions so new leaves require no scoring-contract changes. Keep only exceptional selection/context overrides and fail when retrieval metadata cannot rank the selected article.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 9825b012-e653-496a-9310-c1f4b6f8ac27

* Preserve published field IDs in sample

Keep the existing Email and Contact Email field IDs unchanged, clarify that the sample represents an independent baseline, and use a local breaking-change rule for the generic smoke evaluation.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 9825b012-e653-496a-9310-c1f4b6f8ac27

* Clarify published field identity rules

State explicitly that a published field keeps its ID, name, and type while a replacement is added as a separate field under an unused ID.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 9825b012-e653-496a-9310-c1f4b6f8ac27

* Align field obsoletion sample baselines

Use Email field ID 3 as the shared baseline so the bad example demonstrates a same-ID rename while the good example retains the original field and adds a separate replacement.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 9825b012-e653-496a-9310-c1f4b6f8ac27

---------

Co-authored-by: Jesper Schulz-Wedde <jesper.schulzwedde@microsoft.com>
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microsoft/knowledge/testing/testisolation-belongs-on-the-test-runner.md Normal file
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---
bc-version: [all]
domain: testing
keywords: [testisolation, testrunner, autocommit, commit, rollback, test-order, database-state]
technologies: [al]
countries: [w1]
application-area: [all]
---
# Configure TestIsolation on the test runner
## Description
`TestIsolation` is a property of a `Subtype = TestRunner` codeunit, not of the test codeunit being executed. Its default is `Disabled`. `Codeunit` rolls back database changes after each test codeunit and `Function` after each test method, including changes that the code under test explicitly committed. Without runner isolation, an `AutoCommit` test can leave data behind and make later tests order-dependent.
## Best Practice
Run independent suites with `TestIsolation = Codeunit` or `Function`, choosing the narrowest boundary the runner supports. Pair this with the appropriate method-level `TransactionModel`: `AutoCommit` permits code under test to commit, while runner isolation still restores the database afterward. Keep isolation disabled only for an intentionally shared-state suite whose ordering and cleanup are explicit.
See sample: `testisolation-belongs-on-the-test-runner.good.al`.
## Anti Pattern
An `AutoCommit` test exercises committed writes under a test runner that omits `TestIsolation` or sets it to `Disabled`, then assumes the database is restored automatically. This article owns runner-level rollback; `transactionmodel-attribute-governs-test-transactions.md` separately owns the method attribute.
See sample: `testisolation-belongs-on-the-test-runner.bad.al`.