50 lines
2.1 KiB
C#
50 lines
2.1 KiB
C#
using System.Text.Json;
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namespace AyCode.Core.Benchmarks.Workloads.Scenarios;
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/// <summary>
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/// Round-trip correctness validator — serializes both sides to canonical System.Text.Json form
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/// and compares the resulting strings. Works for any object graph without a custom comparer (slower
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/// than property-by-property but universal). Used by every benchmark's <c>VerifyRoundTrip()</c>
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/// implementation as the deep-equality oracle before warmup begins.
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/// </summary>
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public static class RoundTripValidator
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{
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#if !AYCODE_NATIVEAOT
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private static readonly JsonSerializerOptions VerifyJsonOpts = new()
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{
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WriteIndented = false,
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DefaultIgnoreCondition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull,
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ReferenceHandler = System.Text.Json.Serialization.ReferenceHandler.IgnoreCycles
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};
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#endif
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/// <summary>
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/// Round-trip equality check via canonical System.Text.Json. Returns true if both sides serialize
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/// to identical JSON strings.
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/// </summary>
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/// <remarks>
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/// AOT publish skip: <c>System.Text.Json</c>'s reflection path uses runtime closed-generic instantiation
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/// (<c>JsonPropertyInfo<TestStatus></c> et al.) that the trimmer drops, causing
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/// <c>NotSupportedException: missing native code or metadata</c>. The validation is JIT-only — the actual
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/// benchmark Serialize/Deserialize loops don't touch this path. Under AOT we return <c>true</c> so all
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/// <c>VerifyRoundTrip()</c> calls pass without running the cross-format validation.
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/// </remarks>
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public static bool DeepEqualsViaJson(object? a, object? b)
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{
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#if AYCODE_NATIVEAOT
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// Skip cross-format validation under AOT — STJ reflection path is incompatible. The roundtrip
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// itself still runs (caller-side Serialize+Deserialize), just the JSON-canonical compare is bypassed.
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return true;
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#else
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if (a == null && b == null) return true;
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if (a == null || b == null) return false;
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var jsonA = JsonSerializer.Serialize(a, VerifyJsonOpts);
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var jsonB = JsonSerializer.Serialize(b, VerifyJsonOpts);
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return jsonA == jsonB;
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#endif
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}
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}
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