Add CI workflow and unit test coverage for DataAccessProvider.Core

[Copilot]

Adds CI automation and unit test infrastructure to establish baseline reliability for the repository.

Changes

• CI Workflow (.github/workflows/ci.yml)

  • Runs on PR and main branch pushes
  • Ubuntu + .NET 10.0.x with restore → build → test pipeline
  • Minimal permissions (contents: read)

• Test Project (tests/DataAccessProvider.Core.Tests/)

  • xUnit on net10.0
  • 21 unit tests covering:
    • Factory registration and data source routing (DataSourceFactoryTests)
    • Provider execution methods (DataSourceProviderTests)
    • Dictionary extension null/DBNull edge cases (ObjectExtensionsTests)
    • Parameter value setting (BaseDataSourceParamsTests)
  • No external dependencies (uses StaticCodeSource for isolation)

Example test demonstrating factory routing:

[Fact]
public void CreateDataSource_WithStaticCodeParams_ShouldReturnStaticCodeSource()
{
    var services = new ServiceCollection();
    services.AddTransient<StaticCodeSource>();
    var factory = new DataSourceFactory(services.BuildServiceProvider());
    var parameters = new StaticCodeParams { Content = "test" };

    var dataSource = factory.CreateDataSource(parameters);

    Assert.IsType<StaticCodeSource>(dataSource);
}

All tests execute via dotnet test DataAccessProvider.sln without requiring database connections.

Original prompt

Create reliability/CI improvements for this repository.

Repository: https://github.com/habbs19/DataAccessProvider

Goals

1. Add a GitHub Actions CI workflow that runs on pull_request and on pushes to main using ubuntu-latest and .NET SDK 10.0.x.

   • Steps: checkout, setup-dotnet, restore, build (Release), test (Release).
   • The workflow should run against DataAccessProvider.sln.

2. Add a new test project targeting net10.0 only:

   • Location: tests/DataAccessProvider.Core.Tests/
   • Framework: xUnit
   • Add package refs: Microsoft.NET.Test.Sdk, xunit, xunit.runner.visualstudio.
   • Reference the DataAccessProvider.Core project.
   • Ensure the new test project is included in DataAccessProvider.sln so dotnet test DataAccessProvider.sln executes it.

3. Add a few starter, fast unit tests that do not require external databases:

   • Test that the factory/provider registration and routing works for at least one provider type (mock/stub if needed).
   • Test one typed mapping/materialization edge case if a mapper exists in Core (e.g., null/DBNull handling). If the internal API is not easily testable without DB drivers, add tests around public helpers that are available.

Constraints

• Ubuntu runner only.
• Keep tests deterministic and not requiring network or real databases.

Acceptance Criteria

• CI workflow is present and passes on a clean checkout.
• dotnet test DataAccessProvider.sln runs and executes the new tests.
• The PR contains CI + tests project + initial tests.

This pull request was created from Copilot chat.

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