partly or unimplemented features - now implemented
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// <copyright file="DeltaIfPresentIntegrationTests.cs" company="StellaOps">
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// SPDX-License-Identifier: BUSL-1.1
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// Sprint: SPRINT_20260208_043_Policy_delta_if_present_calculations_for_missing_signals (TSF-004)
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// Task: T2 - Wire API/CLI/UI integration tests
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// </copyright>
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using FluentAssertions;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Time.Testing;
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using StellaOps.Policy.Determinization;
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using StellaOps.Policy.Determinization.Evidence;
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using StellaOps.Policy.Determinization.Models;
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using StellaOps.Policy.Determinization.Scoring;
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using StellaOps.Policy.Engine.DependencyInjection;
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using Xunit;
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namespace StellaOps.Policy.Engine.Tests.Integration;
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/// <summary>
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/// Integration tests for delta-if-present service DI wiring and functionality.
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/// </summary>
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[Trait("Category", "Integration")]
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[Trait("Sprint", "20260208.043")]
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[Trait("Task", "T2")]
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public sealed class DeltaIfPresentIntegrationTests
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{
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private readonly FakeTimeProvider _timeProvider = new();
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private static ServiceCollection CreateServicesWithConfiguration()
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{
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var services = new ServiceCollection();
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var configuration = new ConfigurationBuilder()
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.AddInMemoryCollection()
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.Build();
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services.AddSingleton<IConfiguration>(configuration);
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return services;
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}
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#region DI Wiring Tests
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[Fact(DisplayName = "AddDeterminization registers IDeltaIfPresentCalculator")]
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public void AddDeterminization_RegistersDeltaIfPresentCalculator()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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// Act
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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// Assert
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var calculator = provider.GetService<IDeltaIfPresentCalculator>();
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calculator.Should().NotBeNull();
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}
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[Fact(DisplayName = "DeltaIfPresentCalculator is registered as singleton")]
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public void DeltaIfPresentCalculator_IsRegisteredAsSingleton()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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// Act
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var first = provider.GetService<IDeltaIfPresentCalculator>();
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var second = provider.GetService<IDeltaIfPresentCalculator>();
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// Assert
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first.Should().BeSameAs(second);
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}
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[Fact(DisplayName = "AddDeterminizationEngine also registers delta-if-present")]
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public void AddDeterminizationEngine_IncludesDeltaIfPresentCalculator()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminizationEngine();
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var provider = services.BuildServiceProvider();
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// Assert
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var calculator = provider.GetService<IDeltaIfPresentCalculator>();
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calculator.Should().NotBeNull();
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}
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#endregion
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#region End-to-End Service Tests
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[Fact(DisplayName = "CalculateSingleSignalDelta works through DI container")]
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public void CalculateSingleSignalDelta_WorksThroughDI()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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var calculator = provider.GetRequiredService<IDeltaIfPresentCalculator>();
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var snapshot = CreatePartialSnapshot();
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// Act
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var result = calculator.CalculateSingleSignalDelta(snapshot, "VEX", 0.0);
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// Assert
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result.Should().NotBeNull();
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result.Signal.Should().Be("VEX");
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result.HypotheticalEntropy.Should().BeLessThan(result.CurrentEntropy);
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}
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[Fact(DisplayName = "CalculateFullAnalysis returns prioritized gaps")]
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public void CalculateFullAnalysis_ReturnsPrioritizedGaps()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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var calculator = provider.GetRequiredService<IDeltaIfPresentCalculator>();
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var snapshot = CreatePartialSnapshot();
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// Act
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var analysis = calculator.CalculateFullAnalysis(snapshot);
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// Assert
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analysis.Should().NotBeNull();
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analysis.GapAnalysis.Should().HaveCountGreaterThan(0);
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analysis.PrioritizedGaps.Should().NotBeEmpty();
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}
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[Fact(DisplayName = "CalculateScoreBounds returns valid range")]
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public void CalculateScoreBounds_ReturnsValidRange()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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var calculator = provider.GetRequiredService<IDeltaIfPresentCalculator>();
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var snapshot = CreatePartialSnapshot();
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// Act
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var bounds = calculator.CalculateScoreBounds(snapshot);
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// Assert
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bounds.Should().NotBeNull();
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bounds.MinimumScore.Should().BeLessThanOrEqualTo(bounds.MaximumScore);
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bounds.Range.Should().BeGreaterThan(0);
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}
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[Fact(DisplayName = "Calculator produces deterministic results through DI")]
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public void Calculator_ProducesDeterministicResults()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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var calculator = provider.GetRequiredService<IDeltaIfPresentCalculator>();
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var snapshot = CreatePartialSnapshot();
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// Act
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var result1 = calculator.CalculateSingleSignalDelta(snapshot, "EPSS", 0.5);
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var result2 = calculator.CalculateSingleSignalDelta(snapshot, "EPSS", 0.5);
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// Assert - Results should be identical
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result1.CurrentScore.Should().Be(result2.CurrentScore);
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result1.HypotheticalScore.Should().Be(result2.HypotheticalScore);
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result1.CurrentEntropy.Should().Be(result2.CurrentEntropy);
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result1.HypotheticalEntropy.Should().Be(result2.HypotheticalEntropy);
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}
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[Fact(DisplayName = "All signals can be analyzed without exceptions")]
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public void AllSignals_CanBeAnalyzed()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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var calculator = provider.GetRequiredService<IDeltaIfPresentCalculator>();
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var snapshot = CreateEmptySnapshot();
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var signals = new[] { "VEX", "EPSS", "Reachability", "Runtime", "Backport", "SBOMLineage" };
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// Act & Assert - All signals should be analyzable
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foreach (var signal in signals)
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{
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var result = calculator.CalculateSingleSignalDelta(snapshot, signal, 0.5);
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result.Signal.Should().Be(signal);
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result.SignalWeight.Should().BeGreaterThan(0);
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}
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}
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#endregion
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#region Integration with Dependencies
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[Fact(DisplayName = "Calculator uses injected UncertaintyScoreCalculator")]
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public void Calculator_UsesInjectedDependencies()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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// Act - Get both services
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var calculator = provider.GetRequiredService<IDeltaIfPresentCalculator>();
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var uncertaintyCalc = provider.GetRequiredService<IUncertaintyScoreCalculator>();
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// Assert - Both should be available
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calculator.Should().NotBeNull();
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uncertaintyCalc.Should().NotBeNull();
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}
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[Fact(DisplayName = "Calculator uses injected TrustScoreAggregator")]
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public void Calculator_UsesInjectedTrustAggregator()
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{
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// Arrange
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var services = CreateServicesWithConfiguration();
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services.AddLogging();
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services.AddSingleton<TimeProvider>(_timeProvider);
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services.AddDeterminization();
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var provider = services.BuildServiceProvider();
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// Act - Get both services
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var calculator = provider.GetRequiredService<IDeltaIfPresentCalculator>();
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var aggregator = provider.GetRequiredService<TrustScoreAggregator>();
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// Assert - Both should be available
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calculator.Should().NotBeNull();
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aggregator.Should().NotBeNull();
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}
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#endregion
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#region Helpers
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private SignalSnapshot CreateEmptySnapshot()
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{
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return SignalSnapshot.Empty("CVE-2024-1234", "pkg:maven/test@1.0", _timeProvider.GetUtcNow());
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}
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private SignalSnapshot CreatePartialSnapshot()
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{
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var now = _timeProvider.GetUtcNow();
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return new SignalSnapshot
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{
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Cve = "CVE-2024-1234",
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Purl = "pkg:maven/test@1.0",
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Vex = SignalState<VexClaimSummary>.NotQueried(),
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Epss = SignalState<EpssEvidence>.NotQueried(),
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Reachability = SignalState<ReachabilityEvidence>.Queried(
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new ReachabilityEvidence { Status = ReachabilityStatus.Reachable, AnalyzedAt = now }, now),
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Runtime = SignalState<RuntimeEvidence>.NotQueried(),
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Backport = SignalState<BackportEvidence>.NotQueried(),
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Sbom = SignalState<SbomLineageEvidence>.Queried(
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new SbomLineageEvidence { SbomDigest = "sha256:abc", Format = "SPDX", ComponentCount = 150, GeneratedAt = now, HasProvenance = true }, now),
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Cvss = SignalState<CvssEvidence>.NotQueried(),
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SnapshotAt = now
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};
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}
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#endregion
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}
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