Add Azure Functions smoke tests with Docker CI automation

[Copilot]

Implements automated smoke testing for Azure Functions isolated .NET worker to catch SDK and source generator regressions.

Implementation

Test Application (test/AzureFunctionsSmokeTests/)

• .NET 8.0 isolated worker app with HelloCities orchestration pattern
• References local source generators to validate code generation
• Configured as executable (not a unit test project) to avoid test framework dependencies

Docker Orchestration (run-smoketests.ps1)

• Builds and publishes Functions app
• Spins up Azurite storage emulator and Functions host in containers
• Triggers HTTP orchestration endpoint, polls for completion
• Validates output matches expected result
• Automatic cleanup of containers and artifacts

CI Integration (.github/workflows/azure-functions-smoke-tests.yml)

• Runs on push/PR to main and feature branches
• Executes full smoke test suite in GitHub Actions

Key Configuration

Sets WEBSITE_HOSTNAME environment variable to enable webhook generation in isolated worker:

docker run -d \
    -e AzureWebJobsStorage="$storageConnectionString" \
    -e WEBSITE_HOSTNAME="localhost:$Port" \
    $ImageName

Azurite connection string components broken out for maintainability. Error polling includes consecutive failure limit to prevent infinite loops on persistent issues.

Package Updates

Added missing versions to Directory.Packages.props:

• Microsoft.Azure.Functions.Worker.Extensions.Http (3.0.13)
• Microsoft.Azure.Functions.Worker.Sdk (1.16.2)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• 127.0.0.11
  • Triggering command: REDACTED, pid is -1 (packet block)
• https://api.github.com/repos/Azure/azure-functions-durable-extension/contents/test/SmokeTests/OOProcSmokeTests/DotNetIsolated
  • Triggering command: /usr/bin/curl curl -s REDACTED (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Azure Functions sample app with automated CI testing</issue_title>
<issue_description>Need to add an Azure Functions test case and automate it using Docker in a GitHub Actions CI. The app can be similar to this one and will be useful for tracking any regressions caused by SDK or Source Generator updates.</issue_description>

<agent_instructions>check the https://github.com/Azure/azure-functions-durable-extension/tree/dev/test/SmokeTests/OOProcSmokeTests/DotNetIsolated, and set up ci to run isolated dotnet function tests </agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Azure Functions sample app with automated CI testing #15

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