llm-pii-poc/tests/TestSupport.Shared/RealNerModelFixture.cs

using Microsoft.Extensions.Logging.Abstractions;
using Microsoft.Extensions.Options;
using PiiRedaction.Core.Configuration;
using PiiRedaction.Infrastructure.Onnx;

namespace PiiRedaction.Tests.Shared;

/// <summary>
/// Reuses a single <see cref="EnglishOnnxNerRunner"/> per fixture for performance.
/// Skips all tests in the class when the ONNX model is missing or cannot be loaded.
/// </summary>
public abstract class RealNerModelFixture
{
    protected EnglishOnnxNerRunner Runner { get; private set; } = null!;

    protected string ModelPath { get; private set; } = null!;

    [OneTimeSetUp]
    public void OneTimeSetUpRealModel()
    {
        ModelPath = RealNerModelPaths.ResolveRepoModelPath();
        if (!File.Exists(ModelPath))
        {
            Assert.Ignore(RealNerModelPaths.ModelMissingMessage);
        }

        var options = Options.Create(new PiiRedactionOptions
        {
            EnglishOnnxModelPath = ModelPath,
            OnnxModelPath = ModelPath
        });
        Runner = new EnglishOnnxNerRunner(options, NullLogger<EnglishOnnxNerRunner>.Instance);

        if (!Runner.IsModelAvailable)
        {
            Runner.Dispose();
            Assert.Ignore(RealNerModelPaths.ModelMissingMessage);
        }
    }

    [OneTimeTearDown]
    public void OneTimeTearDownRealModel()
    {
        Runner?.Dispose();
    }
}