29 lines
1.0 KiB
C#
29 lines
1.0 KiB
C#
using System.Net;
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using Microsoft.AspNetCore.Mvc.Testing;
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namespace Bff.Tests;
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/// <summary>
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/// S-16c (#124): the service exposes OTel HTTP-server metrics in Prometheus text format at /metrics,
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/// so Prometheus can scrape the golden signals (traffic, errors, latency) for the request path.
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/// </summary>
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public class MetricsEndpointTests(WebApplicationFactory<Program> factory)
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: IClassFixture<WebApplicationFactory<Program>>
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{
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[Fact]
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public async Task Metrics_endpoint_exposes_http_server_request_duration_after_traffic()
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{
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var client = factory.CreateClient();
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// One request produces an http.server.request.duration measurement...
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await client.GetAsync("/health");
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// ...which the /metrics scrape endpoint then exposes in Prometheus text format.
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var response = await client.GetAsync("/metrics");
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Assert.Equal(HttpStatusCode.OK, response.StatusCode);
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var body = await response.Content.ReadAsStringAsync();
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Assert.Contains("http_server_request_duration", body);
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}
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}
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