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| 1 | +using System; |
| 2 | +using System.Collections.Generic; |
| 3 | +using System.IO; |
| 4 | +using FolderDiffIL4DotNet.Models; |
| 5 | +using FolderDiffIL4DotNet.Services; |
| 6 | +using Xunit; |
| 7 | + |
| 8 | +namespace FolderDiffIL4DotNet.Tests.Services |
| 9 | +{ |
| 10 | + [Trait("Category", "Unit")] |
| 11 | + public sealed class FolderDiffExecutionStrategyTests |
| 12 | + { |
| 13 | + [Fact] |
| 14 | + public void EnumerateIncludedFiles_FiltersIgnoredFiles_AndRecordsIgnoredLocations() |
| 15 | + { |
| 16 | + const string oldDir = "/virtual/old"; |
| 17 | + const string newDir = "/virtual/new"; |
| 18 | + const string reportDir = "/virtual/report"; |
| 19 | + |
| 20 | + var fileSystem = new FakeFileSystemService(); |
| 21 | + fileSystem.SetFiles(oldDir, |
| 22 | + Path.Combine(oldDir, "keep.txt"), |
| 23 | + Path.Combine(oldDir, "ignored.pdb")); |
| 24 | + fileSystem.SetFiles(newDir, |
| 25 | + Path.Combine(newDir, "keep.txt"), |
| 26 | + Path.Combine(newDir, "ignored.pdb")); |
| 27 | + |
| 28 | + var resultLists = new FileDiffResultLists(); |
| 29 | + var strategy = CreateStrategy( |
| 30 | + CreateConfig(), |
| 31 | + CreateExecutionContext(oldDir, newDir, reportDir), |
| 32 | + resultLists, |
| 33 | + fileSystem); |
| 34 | + |
| 35 | + var oldIncludedFiles = strategy.EnumerateIncludedFiles(oldDir, FileDiffResultLists.IgnoredFileLocation.Old); |
| 36 | + var newIncludedFiles = strategy.EnumerateIncludedFiles(newDir, FileDiffResultLists.IgnoredFileLocation.New); |
| 37 | + |
| 38 | + Assert.Equal(new[] { Path.Combine(oldDir, "keep.txt") }, oldIncludedFiles); |
| 39 | + Assert.Equal(new[] { Path.Combine(newDir, "keep.txt") }, newIncludedFiles); |
| 40 | + Assert.Equal( |
| 41 | + FileDiffResultLists.IgnoredFileLocation.Old | FileDiffResultLists.IgnoredFileLocation.New, |
| 42 | + resultLists.IgnoredFilesRelativePathToLocation["ignored.pdb"]); |
| 43 | + } |
| 44 | + |
| 45 | + [Fact] |
| 46 | + public void ComputeUnionFileCount_UsesRelativePathUnionAcrossRoots() |
| 47 | + { |
| 48 | + const string oldDir = "/virtual/old"; |
| 49 | + const string newDir = "/virtual/new"; |
| 50 | + const string reportDir = "/virtual/report"; |
| 51 | + |
| 52 | + var strategy = CreateStrategy( |
| 53 | + CreateConfig(), |
| 54 | + CreateExecutionContext(oldDir, newDir, reportDir), |
| 55 | + new FileDiffResultLists(), |
| 56 | + new FakeFileSystemService()); |
| 57 | + |
| 58 | + var count = strategy.ComputeUnionFileCount( |
| 59 | + new[] |
| 60 | + { |
| 61 | + Path.Combine(oldDir, "shared.txt"), |
| 62 | + Path.Combine(oldDir, "old-only.txt") |
| 63 | + }, |
| 64 | + new[] |
| 65 | + { |
| 66 | + Path.Combine(newDir, "shared.txt"), |
| 67 | + Path.Combine(newDir, "new-only.txt") |
| 68 | + }); |
| 69 | + |
| 70 | + Assert.Equal(3, count); |
| 71 | + } |
| 72 | + |
| 73 | + [Fact] |
| 74 | + public void DetermineMaxParallel_WhenAutoAndNetworkOptimized_CapsByNetworkLimit() |
| 75 | + { |
| 76 | + var strategy = CreateStrategy( |
| 77 | + CreateConfig(maxParallelism: 0), |
| 78 | + CreateExecutionContext("/virtual/old", "/virtual/new", "/virtual/report", optimizeForNetworkShares: true), |
| 79 | + new FileDiffResultLists(), |
| 80 | + new FakeFileSystemService()); |
| 81 | + |
| 82 | + Assert.Equal(Math.Min(Environment.ProcessorCount, 8), strategy.DetermineMaxParallel()); |
| 83 | + } |
| 84 | + |
| 85 | + [Fact] |
| 86 | + public void DetermineMaxParallel_WhenConfiguredPositive_ReturnsConfiguredValue() |
| 87 | + { |
| 88 | + var strategy = CreateStrategy( |
| 89 | + CreateConfig(maxParallelism: 12), |
| 90 | + CreateExecutionContext("/virtual/old", "/virtual/new", "/virtual/report", optimizeForNetworkShares: true), |
| 91 | + new FileDiffResultLists(), |
| 92 | + new FakeFileSystemService()); |
| 93 | + |
| 94 | + Assert.Equal(12, strategy.DetermineMaxParallel()); |
| 95 | + } |
| 96 | + |
| 97 | + private static FolderDiffExecutionStrategy CreateStrategy( |
| 98 | + ConfigSettings config, |
| 99 | + DiffExecutionContext executionContext, |
| 100 | + FileDiffResultLists resultLists, |
| 101 | + IFileSystemService fileSystem) |
| 102 | + => new(config, executionContext, resultLists, fileSystem); |
| 103 | + |
| 104 | + private static ConfigSettings CreateConfig(int maxParallelism = 0) => new() |
| 105 | + { |
| 106 | + IgnoredExtensions = new List<string> { ".pdb" }, |
| 107 | + ShouldIncludeIgnoredFiles = true, |
| 108 | + MaxParallelism = maxParallelism |
| 109 | + }; |
| 110 | + |
| 111 | + private static DiffExecutionContext CreateExecutionContext( |
| 112 | + string oldDir, |
| 113 | + string newDir, |
| 114 | + string reportDir, |
| 115 | + bool optimizeForNetworkShares = false) |
| 116 | + => new(oldDir, newDir, reportDir, optimizeForNetworkShares, detectedNetworkOld: false, detectedNetworkNew: false); |
| 117 | + |
| 118 | + private sealed class FakeFileSystemService : IFileSystemService |
| 119 | + { |
| 120 | + private readonly Dictionary<string, IReadOnlyList<string>> _filesByRoot = new(StringComparer.OrdinalIgnoreCase); |
| 121 | + |
| 122 | + public void SetFiles(string rootFolderAbsolutePath, params string[] files) |
| 123 | + => _filesByRoot[rootFolderAbsolutePath] = files; |
| 124 | + |
| 125 | + public IEnumerable<string> EnumerateFiles(string rootFolderAbsolutePath, string searchPattern, SearchOption searchOption) |
| 126 | + => _filesByRoot.TryGetValue(rootFolderAbsolutePath, out var files) |
| 127 | + ? files |
| 128 | + : Array.Empty<string>(); |
| 129 | + |
| 130 | + public void CreateDirectory(string path) |
| 131 | + { |
| 132 | + } |
| 133 | + |
| 134 | + public DateTime GetLastWriteTimeUtc(string path) => DateTime.UnixEpoch; |
| 135 | + } |
| 136 | + } |
| 137 | +} |
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