67 lines
2.8 KiB
C#
67 lines
2.8 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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using BenchmarkDotNet.Attributes;
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using Umbraco.Tests.Benchmarks.Config;
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namespace Umbraco.Tests.Benchmarks;
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[QuickRunWithMemoryDiagnoserConfig]
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public class StringReplaceFirstBenchmarks
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{
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[Params("Test string",
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"This is a test string that contains multiple test entries",
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"This is a string where the searched value is very far back. The system needs to go through all of this code before it reaches the test")]
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public string Text { get; set; }
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public string Search { get; set; }
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public string Replace { get; set; }
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[GlobalSetup]
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public void Setup()
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{
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Search = "test";
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Replace = "release";
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}
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[Benchmark(Baseline = true, Description = "Replace first w/ substring")]
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public string SubstringReplaceFirst()
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{
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var pos = Text.IndexOf(Search, StringComparison.InvariantCulture);
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if (pos < 0)
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{
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return Text;
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}
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return Text.Substring(0, pos) + Replace + Text.Substring(pos + Search.Length);
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}
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[Benchmark(Description = "Replace first w/ span")]
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public string SpanReplaceFirst()
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{
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var spanText = Text.AsSpan();
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var pos = spanText.IndexOf(Search, StringComparison.InvariantCulture);
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if (pos < 0)
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{
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return Text;
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}
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return string.Concat(spanText[..pos], Replace.AsSpan(), spanText[(pos + Search.Length)..]);
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}
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//| Method | Text | Mean | Error | StdDev | Ratio | RatioSD | Gen 0 | Allocated |
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//|----------------------------- |--------------------- |----------:|---------:|---------:|------:|--------:|-------:|----------:|
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//| 'Replace first w/ substring' | Test string | 46.08 ns | 25.83 ns | 1.416 ns | 1.00 | 0.00 | - | - |
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//| 'Replace first w/ span' | Test string | 38.59 ns | 19.46 ns | 1.067 ns | 0.84 | 0.05 | - | - |
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//| | | | | | | | | |
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//| 'Replace first w/ substring' | This(...)test[134] | 407.89 ns | 52.08 ns | 2.855 ns | 1.00 | 0.00 | 0.1833 | 584 B |
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//| 'Replace first w/ span' | This(...)test[134] | 372.99 ns | 58.38 ns | 3.200 ns | 0.91 | 0.01 | 0.0941 | 296 B |
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//| | | | | | | | | |
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//| 'Replace first w/ substring' | This(...)tries[57] | 113.16 ns | 27.95 ns | 1.532 ns | 1.00 | 0.00 | 0.0961 | 304 B |
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//| 'Replace first w/ span' | This(...)tries[57] | 76.57 ns | 17.86 ns | 0.979 ns | 0.68 | 0.01 | 0.0455 | 144 B |
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}
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