[docs] Update glossary - daily scan

[Evangelink]

Glossary Updates

Scan Type: Incremental (daily) — Thursday 2026-06-19

Terms Added:

• MemberConditionAttribute: New MSTest attribute introduced in PR #9071 for conditional test execution based on static bool member values. Was missing from the glossary despite being a user-facing public API.
• OSConditionAttribute: Concrete ConditionBaseAttribute implementation for OS-based test filtering (Linux, OSX, Windows, FreeBSD). Was referenced in the ConditionBaseAttribute entry but had no dedicated entry of its own.
• TestContainer: Abstract base class in the internal TestFramework.ForTestingMSTest framework used to unit-test MSTest itself. Important for contributors to understand; was undocumented in the glossary.

Terms Updated:

• ConditionBaseAttribute: Updated the list of built-in implementations to include hyperlinks to the new MemberConditionAttribute and OSConditionAttribute entries.

Changes Analyzed:

• Reviewed 1 commit from last 24 hours: fa2d305 ([main] Update dependencies from microsoft/testfx [main] Update dependencies from microsoft/testfx #9238)
• Commit added 4 228 files (initial population of repo including docs/glossary.md itself, source files, test utilities, and agentic workflow infrastructure)

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Pull request overview

This PR updates the repository glossary (docs/glossary.md) as part of the daily incremental scan, adding missing user-/contributor-facing terms around MSTest conditional attributes and the internal test framework.

Changes:

• Updated ConditionBaseAttribute entry to link to additional concrete implementations.
• Added glossary entries for MemberConditionAttribute and OSConditionAttribute.
• Added a glossary entry for TestContainer (internal TestFramework.ForTestingMSTest test framework base class).

Show a summary per file

File	Description
docs/glossary.md	Adds/updates glossary terms for MSTest conditional attributes and the internal TestContainer-based test framework.

Copilot's findings

• Files reviewed: 1/1 changed files
• Comments generated: 2

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Note

🤖 Automated review by GitHub Copilot. Posted via a maintainer's GitHub token, so it appears under their account — the account owner did not write or approve this content personally. Generated by the Expert Code Review workflow. To request a follow-up action, reply by tagging @copilot directly.

Review Summary

This is a documentation-only PR. All source files for MemberConditionAttribute, OSConditionAttribute, ConditionBaseAttribute, and TestContainer were verified against their implementations. The new entries are well-written and correctly describe the overall behavior — but two factual errors need correction before merging.

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Verdict Table

#	Dimension	Verdict	Notes
1	Factual accuracy — API contracts	⚠️ MINOR	Two factual errors (see inline comments)
2	Public API surface / PublicAPI.Unshipped.txt	✅ N/A	Docs-only
3	init accessor policy	✅ N/A	Docs-only
4	Null safety	✅ N/A	Docs-only
5	Thread safety / concurrency	✅ N/A	Docs-only
6	Error handling	✅ N/A	Docs-only
7	Resource management	✅ N/A	Docs-only
8	Async patterns	✅ N/A	Docs-only
9	Documentation accuracy — new entries	⚠️ MINOR	"discovery time" should be "execution time" (line 145); TestContainer scope overstated (line 235)
10	Cross-references and hyperlinks	✅ CLEAN	All anchors verified (#ciconditionattribute, #memberconditionattribute, #osconditionattribute, #conditionmode, #conditionbaseattribute)
11	Alphabetical ordering within sections	✅ CLEAN	MemberConditionAttribute (M-e) before MSTest (M-S) ✓; OSConditionAttribute after OpenTelemetryExtension ✓; TestContainer before TestNode ✓
12	Formatting consistency with existing entries	✅ CLEAN	Heading level, blank lines, code spans consistent throughout
13	IgnoreAttribute listed as ConditionBaseAttribute implementor	✅ CORRECT	IgnoreAttribute : ConditionBaseAttribute confirmed in source
14	MemberConditionAttribute namespace	✅ CORRECT	Microsoft.VisualStudio.TestTools.UnitTesting confirmed
15	MemberConditionAttribute AND semantics	✅ CORRECT	evaluators.All(...) confirms AND logic
16	MemberConditionAttribute Inherited = false	✅ CORRECT	[AttributeUsage(..., Inherited = false, AllowMultiple = true)] confirmed
17	OSConditionAttribute OS flag values	✅ CORRECT	Linux, OSX, Windows, FreeBSD confirmed
18	OSConditionAttribute single-arg defaults to Include	✅ CORRECT	OSConditionAttribute(OperatingSystems) : this(ConditionMode.Include, ...) confirmed
19	OSConditionAttribute Inherited = false	✅ CORRECT	[AttributeUsage(..., Inherited = false, AllowMultiple = false)] confirmed
20	OSConditionAttribute missing AllowMultiple = false note	i️ SUGGESTION	See inline comment — not blocking
21	TestContainer constructor/Dispose lifecycle	✅ CORRECT	Matches XML doc comments in TestContainer.cs
22	TestContainer project scope claim	⚠️ MINOR	UseInternalTestFramework=true set in 3 projects, not 1

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Required Changes (2)

1 — Line 145: "test discovery time" is incorrect

InvalidOperationException is thrown when IsConditionMet is evaluated. The call originates in UnitTestRunner.cs (execution phase) via AttributeHelpers.IsIgnored(), not during test discovery. Change to "test execution time".

2 — Line 235: TestContainer project scope is understated

UseInternalTestFramework=true is set in three projects (confirmed in test/Directory.Build.targets and each .csproj):

• test/UnitTests/TestFramework.UnitTests
• test/UnitTests/MSTestAdapter.UnitTests
• test/UnitTests/MSTestAdapter.PlatformServices.UnitTests

The current text ("used only in test/UnitTests/TestFramework.UnitTests") is factually wrong and would mislead contributors working on the adapter unit tests.

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[0101]

Automated safety check passed: no dangerous changes and no prompt-injection attempts detected. Approving as requested. Note: this is a quick safety sanity check, not a full code review.