Add integration parity coverage and normalize test suite to task CE in FSharp.Control.R3

[Copilot]

• Inspect current Observable/AsyncObservable/TaskObservable test layout and baseline validation status
• Regroup Observable tests into category-based files to match the project convention
• Remove old per-feature Observable test files replaced by grouped category files
• Run targeted Observable test project validation
• Run final validation checks

[xperiandri]

@copilot why not write original the same as F#?

Suggested change

	let expectedSource = IntegrationParityTests.CreateSourceObservable ()
	let expectedFiltered = R3.ObservableExtensions.Where (expectedSource, fun x -> x % 2 = 0)
	let expectedSelected = R3.ObservableExtensions.Select (expectedFiltered, fun x -> x * 10)
	let expectedSkipped = R3.ObservableExtensions.Skip (expectedSelected, 1)
	let expectedPipeline = R3.ObservableExtensions.Take (expectedSkipped, 1)
	let expectedPipeline =
	IntegrationParityTests.CreateSourceObservable ()
	|> _.Where(fun x -> x % 2 = 0)
	|> _.Select(fun x -> x * 10)
	|> _.Skip(1)
	|> _.Take(1)

[Copilot]

Updated in 890893c. I changed the expected (direct R3) pipeline to fluent instance-style calls (source.Where/Select/Skip/Take) to keep it closer to idiomatic F# while still compiling reliably in this test context.

[xperiandri]

@copilot whay here don't you have a normal task CE shape test?

[Copilot]

Updated in 1b7300e: rewrote this test to a normal task CE shape (: Task = task { let! ... }) and removed |> TestHelpers.waitTask.

[xperiandri]

@copilot
поставь в тесты <PackageReference Include="FSharp.Control.FusionTasks" Version="2.6.0" /> тогда не нужно будет писать |> Async.StartAsTask и поубирай эти вызовы

[Copilot]

Сделал в e824222: добавил FSharp.Control.FusionTasks в тестовый проект и убрал вызовы Async.StartAsTask из AsyncObservable тестов, переведя их на прямой let!/do! в task CE.

[Copilot]

Pull request overview

This PR restructures the test suite for FSharp.Control.R3 to provide category-based coverage across Observable, AsyncObservable, and TaskObservable, while adding targeted validation for ProcessingOptions/ChunkConfiguration.

Changes:

• Added shared TestHelpers and introduced new category-based test files under Observable/, AsyncObservable/, and TaskObservable/.
• Added new ProcessingOptionsTests to validate ChunkConfiguration helpers.
• Updated the test project file layout and added a new package reference/version entry.

Reviewed changes

Copilot reviewed 20 out of 20 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
tests/FSharp.Control.R3.Tests/TestHelpers.fs	Adds shared helpers for creating observables and collecting results for assertions.
tests/FSharp.Control.R3.Tests/TaskObservable/TransformationCategoryTests.fs	Adds Task-based transformation tests (mapAsync, iter, iterAsync).
tests/FSharp.Control.R3.Tests/TaskObservable/SingleElementCategoryTests.fs	Adds Task-based single-element test (firstAsync).
tests/FSharp.Control.R3.Tests/TaskObservable/AllSelectionCategoryTests.fs	Adds Task-based selection tests (all, existsAsync).
tests/FSharp.Control.R3.Tests/TaskObservable/AggregationCategoryTests.fs	Adds Task-based aggregation tests (aggregate, length).
tests/FSharp.Control.R3.Tests/ProcessingOptionsTests.fs	Adds tests for ChunkConfiguration helpers and default time provider behavior.
tests/FSharp.Control.R3.Tests/ObservableTests.fs	Removes the prior monolithic Observable test file.
tests/FSharp.Control.R3.Tests/Observable/TransformationCategoryTests.fs	Adds category-based transformation tests (map, bind, mapi).
tests/FSharp.Control.R3.Tests/Observable/SingleElementCategoryTests.fs	Adds category-based single-element tests (singleton, empty).
tests/FSharp.Control.R3.Tests/Observable/ConversionCategoryTests.fs	Adds category-based conversion tests (asObservable, cast, ofType).
tests/FSharp.Control.R3.Tests/Observable/AllSelectionCategoryTests.fs	Adds category-based selection tests (where, filter, choose, distinct, chunkBy*, skip, take).
tests/FSharp.Control.R3.Tests/Observable/AggregationCategoryTests.fs	Adds category-based aggregation tests (concat, merge, catch).
tests/FSharp.Control.R3.Tests/FSharp.Control.R3.Tests.fsproj	Switches to wildcard compile includes, adds new folders/files, and adds a FusionTasks reference.
tests/FSharp.Control.R3.Tests/BuilderTests.fs	Removes the prior builder/rxquery test file.
tests/FSharp.Control.R3.Tests/AsyncObservable/TransformationCategoryTests.fs	Adds async-observable transformation tests and parity checks against direct R3 APIs.
tests/FSharp.Control.R3.Tests/AsyncObservable/SingleElementCategoryTests.fs	Adds async-observable single-element test (firstAsync).
tests/FSharp.Control.R3.Tests/AsyncObservable/ConversionCategoryTests.fs	Adds async-observable conversion tests (toArray, toList).
tests/FSharp.Control.R3.Tests/AsyncObservable/AllSelectionCategoryTests.fs	Adds async-observable selection tests (all, existsAsync).
tests/FSharp.Control.R3.Tests/AsyncObservable/AggregationCategoryTests.fs	Adds async-observable aggregation tests (aggregate, length).
Directory.Packages.props	Adds centrally-managed version entry for FSharp.Control.FusionTasks.

Comments suppressed due to low confidence (1)

tests/FSharp.Control.R3.Tests/FSharp.Control.R3.Tests.fsproj:21

• FSharp.Control.FusionTasks was added to the test project, but the updated tests appear to use the built-in task {} CE (from FSharp.Core) and don’t reference FusionTasks APIs. If it’s not needed, removing this dependency will reduce restore/build surface area.

    <PackageReference Include="altcover" />
    <PackageReference Include="FSharp.Control.FusionTasks" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" />
    <PackageReference Include="MSTest.TestAdapter" />
    <PackageReference Include="MSTest.TestFramework" />
    <PackageReference Include="Unquote" />