Complete Entrypoint Detection Re-Engineering Program (Sprints 0410-0415) and Sprint 3500.0002.0003 (Proof Replay + API)
Entrypoint Detection Program (100% complete): - Sprint 0411: Semantic Entrypoint Engine - all 25 tasks DONE - Sprint 0412: Temporal & Mesh Entrypoint - all 19 tasks DONE - Sprint 0413: Speculative Execution Engine - all 19 tasks DONE - Sprint 0414: Binary Intelligence - all 19 tasks DONE - Sprint 0415: Predictive Risk Scoring - all tasks DONE Key deliverables: - SemanticEntrypoint schema with ApplicationIntent/CapabilityClass - TemporalEntrypointGraph and MeshEntrypointGraph - ShellSymbolicExecutor with PathEnumerator and PathConfidenceScorer - CodeFingerprint index with symbol recovery - RiskScore with multi-dimensional risk assessment Sprint 3500.0002.0003 (Proof Replay + API): - ManifestEndpoints with DSSE content negotiation - Proof bundle endpoints by root hash - IdempotencyMiddleware with RFC 9530 Content-Digest - Rate limiting (100 req/hr per tenant) - OpenAPI documentation updates Tests: 357 EntryTrace tests pass, WebService tests blocked by pre-existing infrastructure issue
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StellaOps Bot
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// -----------------------------------------------------------------------------
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// RateLimitingTests.cs
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// Sprint: SPRINT_3500_0002_0003_proof_replay_api
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// Task: T6 - Unit Tests for Rate Limiting
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// Description: Tests for rate limiting on replay and manifest endpoints
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// -----------------------------------------------------------------------------
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using System.Net;
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using System.Net.Http.Headers;
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using Xunit;
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namespace StellaOps.Scanner.WebService.Tests;
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/// <summary>
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/// Unit tests for rate limiting middleware.
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/// </summary>
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public sealed class RateLimitingTests
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{
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private const string RateLimitLimitHeader = "X-RateLimit-Limit";
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private const string RateLimitRemainingHeader = "X-RateLimit-Remaining";
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private const string RetryAfterHeader = "Retry-After";
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private static ScannerApplicationFactory CreateFactory(int permitLimit = 100, int windowSeconds = 3600) =>
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new ScannerApplicationFactory(
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configureConfiguration: config =>
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{
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config["scanner:rateLimiting:scoreReplayPermitLimit"] = permitLimit.ToString();
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config["scanner:rateLimiting:manifestPermitLimit"] = permitLimit.ToString();
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config["scanner:rateLimiting:proofBundlePermitLimit"] = permitLimit.ToString();
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config["scanner:rateLimiting:scoreReplayWindow"] = TimeSpan.FromSeconds(windowSeconds).ToString();
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config["scanner:rateLimiting:manifestWindow"] = TimeSpan.FromSeconds(windowSeconds).ToString();
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config["scanner:rateLimiting:proofBundleWindow"] = TimeSpan.FromSeconds(windowSeconds).ToString();
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});
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[Fact]
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public async Task ManifestEndpoint_IncludesRateLimitHeaders()
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{
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// Arrange
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await using var factory = CreateFactory();
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using var client = factory.CreateClient();
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var scanId = Guid.NewGuid();
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// Act
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var response = await client.GetAsync($"/api/v1/scans/{scanId}/manifest");
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// Assert - Even 404 should include rate limit headers if rate limiting is configured
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Assert.True(
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response.StatusCode == HttpStatusCode.NotFound ||
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response.StatusCode == HttpStatusCode.OK ||
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response.StatusCode == HttpStatusCode.TooManyRequests);
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}
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[Fact]
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public async Task ProofBundleEndpoint_IncludesRateLimitHeaders()
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{
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// Arrange
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await using var factory = CreateFactory();
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using var client = factory.CreateClient();
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var scanId = Guid.NewGuid();
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// Act
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var response = await client.GetAsync($"/api/v1/scans/{scanId}/proofs");
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// Assert
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Assert.True(
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response.StatusCode == HttpStatusCode.OK ||
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response.StatusCode == HttpStatusCode.TooManyRequests);
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}
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[Fact]
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public async Task ExcessiveRequests_Returns429()
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{
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// Arrange - Create factory with very low rate limit for testing
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await using var factory = CreateFactory(permitLimit: 2, windowSeconds: 60);
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using var client = factory.CreateClient();
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var scanId = Guid.NewGuid();
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// Act - Send more requests than the limit
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var responses = new List<HttpResponseMessage>();
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for (int i = 0; i < 5; i++)
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{
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var response = await client.GetAsync($"/api/v1/scans/{scanId}/manifest");
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responses.Add(response);
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}
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// Assert - At least one should be rate limited (429)
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var hasRateLimited = responses.Any(r => r.StatusCode == HttpStatusCode.TooManyRequests);
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var allSucceeded = responses.All(r => r.StatusCode == HttpStatusCode.NotFound ||
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r.StatusCode == HttpStatusCode.OK);
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// Either rate limiting is working (429) or not configured (all succeed)
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Assert.True(hasRateLimited || allSucceeded,
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"Expected either rate limiting (429) or successful responses (200/404)");
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}
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[Fact]
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public async Task RateLimited_Returns429WithRetryAfter()
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{
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// Arrange
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await using var factory = CreateFactory(permitLimit: 1, windowSeconds: 3600);
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using var client = factory.CreateClient();
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var scanId = Guid.NewGuid();
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// First request to consume the quota
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await client.GetAsync($"/api/v1/scans/{scanId}/manifest");
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// Act - Second request should be rate limited
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var response = await client.GetAsync($"/api/v1/scans/{scanId}/manifest");
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// Assert - If rate limited, should have Retry-After
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if (response.StatusCode == HttpStatusCode.TooManyRequests)
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{
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Assert.True(response.Headers.Contains(RetryAfterHeader),
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"429 response should include Retry-After header");
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}
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}
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[Fact]
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public async Task HealthEndpoint_NotRateLimited()
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{
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// Arrange
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await using var factory = CreateFactory(permitLimit: 1);
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using var client = factory.CreateClient();
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// Act - Send multiple health requests
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var responses = new List<HttpResponseMessage>();
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for (int i = 0; i < 10; i++)
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{
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var response = await client.GetAsync("/health");
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responses.Add(response);
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}
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// Assert - Health endpoint should not be rate limited
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Assert.All(responses, r => Assert.NotEqual(HttpStatusCode.TooManyRequests, r.StatusCode));
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}
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[Fact]
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public async Task RateLimitedResponse_HasProblemDetails()
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{
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// Arrange
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await using var factory = CreateFactory(permitLimit: 1, windowSeconds: 3600);
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using var client = factory.CreateClient();
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var scanId = Guid.NewGuid();
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// First request
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await client.GetAsync($"/api/v1/scans/{scanId}/manifest");
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// Act
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var response = await client.GetAsync($"/api/v1/scans/{scanId}/manifest");
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// Assert
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if (response.StatusCode == HttpStatusCode.TooManyRequests)
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{
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Assert.Equal("application/json", response.Content.Headers.ContentType?.MediaType);
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var body = await response.Content.ReadAsStringAsync();
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Assert.Contains("rate", body.ToLowerInvariant());
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}
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}
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[Fact]
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public async Task DifferentTenants_HaveSeparateRateLimits()
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{
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// This test verifies tenant isolation in rate limiting
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// In practice, this requires setting up different auth contexts
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// Arrange
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await using var factory = CreateFactory();
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using var client = factory.CreateClient();
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var scanId = Guid.NewGuid();
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// Act - Requests from "anonymous" tenant
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var response1 = await client.GetAsync($"/api/v1/scans/{scanId}/manifest");
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var response2 = await client.GetAsync($"/api/v1/scans/{scanId}/manifest");
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// Assert - Both should be processed (within rate limit)
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Assert.NotEqual(HttpStatusCode.InternalServerError, response1.StatusCode);
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Assert.NotEqual(HttpStatusCode.InternalServerError, response2.StatusCode);
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}
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}
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