register-referentie/services/bff/Bff.Tests/DomainClientProvideDocumentsTests.cs

using System.Net;
using System.Text;
using Bff.Api;

namespace Bff.Tests;

// S-29 (#192): the BFF reads the domain's provide-documents answer — 422 carries the refusal reason,
// 503 means the scanner was down — into a result the endpoint relays.
public class DomainClientProvideDocumentsTests
{
    private sealed class Reply(HttpStatusCode status, string? json) : HttpMessageHandler
    {
        protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken ct)
            => Task.FromResult(new HttpResponseMessage(status)
            {
                Content = new StringContent(json ?? "", Encoding.UTF8, "application/json"),
            });
    }

    [Theory]
    [InlineData(HttpStatusCode.NoContent, null, ProvideDocumentsResult.Provided)]
    [InlineData(HttpStatusCode.NotFound, null, ProvideDocumentsResult.NotFound)]
    [InlineData(HttpStatusCode.UnprocessableEntity, """{"reason":"not-a-pdf"}""", ProvideDocumentsResult.NotAPdf)]
    [InlineData(HttpStatusCode.UnprocessableEntity, """{"reason":"infected"}""", ProvideDocumentsResult.Infected)]
    [InlineData(HttpStatusCode.ServiceUnavailable, null, ProvideDocumentsResult.ScannerUnavailable)]
    public async Task Maps_the_domain_answer_to_a_result(HttpStatusCode status, string? body, ProvideDocumentsResult expected)
    {
        var client = new DomainClient(new HttpClient(new Reply(status, body)) { BaseAddress = new Uri("http://domain/") });

        Assert.Equal(expected, await client.ProvideDocumentsAsync("reg-1", "123456782", "JVBERi0=", null, null));
    }
}