Add integration test project for Actors.Generators (replaces E2E tests)

[Copilot]

Description

New test/Dapr.IntegrationTest.Actors.Generators project that replaces the E2E tests in Dapr.E2E.Test.Actors.Generators with testcontainer-based integration tests matching the existing Dapr.IntegrationTest.Actors patterns. Removes the dependency on the Dapr CLI and manual sidecar/port management.

Project structure:

• Infrastructure/ — ActorTestContext and ActorRuntimeHelper (same patterns as Dapr.IntegrationTest.Actors)
• Actors/ — IPingActor, IRemoteActor/RemoteActor (server-side), IClientActor with [GenerateActorClient] (source-generated client)
• GeneratedClientTests.cs — 8 integration tests

Test coverage (8 tests, up from 1 in E2E):

• Default state retrieval and set/get round-trip (E2E equivalent)
• [ActorMethod(Name)] attribute mapping verification
• Void method with no parameters (fire-and-forget + side-effect check)
• Multiple sequential state updates (last-write-wins)
• Actor ID isolation (independent state across actors)
• CancellationToken passthrough
• JSON serialization with special characters

The IClientActor interface exercises the source generator end-to-end:

[GenerateActorClient]
public interface IClientActor
{
    [ActorMethod(Name = "GetState")]
    Task<ClientState> GetStateAsync(CancellationToken cancellationToken = default);

    [ActorMethod(Name = "SetState")]
    Task SetStateAsync(ClientState state, CancellationToken cancellationToken = default);
    // ...
}

Code quality:

• RemoteActor uses C# primary constructor matching existing actor patterns in Dapr.IntegrationTest.Actors
• All logging uses [LoggerMessage] source-generated extension methods (via RemoteActorLogMessages partial class)

Issue reference

Checklist

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[WhitWaldo]

@copilot Please resolve the merge conflicts

[Copilot]

@copilot Please resolve the merge conflicts

Resolved in b3f8b51. The conflict was in all.sln where our new Dapr.IntegrationTest.Actors.Generators project entry overlapped with the WorkflowRetryPolicy example added on master — kept both.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.37%. Comparing base (5169561) to head (9ef744f).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1791   +/-   ##
=======================================
  Coverage   62.37%   62.37%           
=======================================
  Files         285      285           
  Lines        8421     8421           
  Branches      980      980           
=======================================
  Hits         5253     5253           
  Misses       2935     2935           
  Partials      233      233           

Flag	Coverage Δ
net10.0	62.36% <ø> (ø)

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[WhitWaldo]

Please review and correct what I identified

[Copilot]

Please review and correct what I identified

All three items addressed in 6f15733: primary constructor, [LoggerMessage] source-generated logging, and <Nullable> moved to test/Directory.Build.props.

[WhitWaldo]

@copilot Well, maybe it was a step too far to pull in the Directory.Props in the integration test directory since that's breaking some of the other integration tests now. Please roll that change back.

[Copilot]

@copilot Well, maybe it was a step too far to pull in the Directory.Props in the integration test directory since that's breaking some of the other integration tests now. Please roll that c...

Reverted in 9ef744f — moved <Nullable>enable</Nullable> back to the project csproj and restored test/Directory.Build.props to its original state.