Joseph Doherty
49 lines
2.3 KiB
C#
49 lines
2.3 KiB
C#
using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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using ZB.MOM.WW.OtOpcUa.Core.Resilience;
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namespace ZB.MOM.WW.OtOpcUa.Core.Tests.Resilience;
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/// <summary>
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/// Load-bearing regression guard for 01/S-6 — an operator-authorable out-of-range
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/// ResilienceConfig value must NEVER brick a healthy driver. Before the R2-02 hardening pass,
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/// <c>"timeoutSeconds": 0</c> (→ <c>TimeSpan.Zero</c>, outside Polly's [10 ms, 24 h] window) and
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/// <c>"breakerFailureThreshold": 1</c> (below Polly's MinimumThroughput floor of 2) each made
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/// <see cref="DriverResiliencePipelineBuilder"/> throw <c>ValidationException</c> inside the
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/// memoizing <c>GetOrAdd</c> factory on EVERY capability call for that (instance, host,
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/// capability) — a permanent brick while the driver is healthy. The parser now clamps and the
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/// builder belt-and-braces clamps, so a pipeline built from a parsed hostile config executes.
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/// </summary>
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[Trait("Category", "Unit")]
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public sealed class ResilienceConfigBrickTests
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{
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/// <summary>A parsed <c>timeoutSeconds:0</c> override must not brick a capability call.</summary>
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[Fact]
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public async Task ParsedConfig_WithZeroTimeout_DoesNotBrickCapabilityCalls()
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{
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var options = DriverResilienceOptionsParser.ParseOrDefaults(
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DriverTier.A, "{\"capabilityPolicies\":{\"Read\":{\"timeoutSeconds\":0}}}", out _);
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var pipeline = new DriverResiliencePipelineBuilder()
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.GetOrCreate("i1", "h1", DriverCapability.Read, options);
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var result = await pipeline.ExecuteAsync(_ => ValueTask.FromResult(42), CancellationToken.None);
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result.ShouldBe(42);
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}
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/// <summary>A parsed <c>breakerFailureThreshold:1</c> override must not brick a capability call.</summary>
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[Fact]
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public async Task ParsedConfig_WithBreakerThresholdOne_DoesNotBrickCapabilityCalls()
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{
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var options = DriverResilienceOptionsParser.ParseOrDefaults(
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DriverTier.A, "{\"capabilityPolicies\":{\"Read\":{\"breakerFailureThreshold\":1}}}", out _);
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var pipeline = new DriverResiliencePipelineBuilder()
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.GetOrCreate("i1", "h1", DriverCapability.Read, options);
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var result = await pipeline.ExecuteAsync(_ => ValueTask.FromResult(42), CancellationToken.None);
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result.ShouldBe(42);
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}
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}
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