116 lines
3.8 KiB
C#
116 lines
3.8 KiB
C#
using Xunit;
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namespace MrGameEng.Mods.Tests;
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public sealed class ModLoaderTests : IDisposable
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{
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private readonly string _root = Directory.CreateTempSubdirectory("mrge-mods-tests-").FullName;
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private string ModsRoot => Path.Combine(_root, "Mods");
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public void Dispose() => Directory.Delete(_root, recursive: true);
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/// <summary>Создаёт мод с About.json; зависимости — id модов, которые должны грузиться раньше.</summary>
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private void WriteMod(string id, params string[] dependencies)
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{
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var aboutDir = Path.Combine(ModsRoot, id, "About");
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Directory.CreateDirectory(aboutDir);
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var deps = string.Join(", ", dependencies.Select(d => $"\"{d}\""));
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File.WriteAllText(
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Path.Combine(aboutDir, "About.json"),
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$$"""{ "id": "{{id}}", "name": "{{id}} mod", "version": "1.0", "dependencies": [{{deps}}] }"""
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);
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}
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[Fact]
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public void Load_OrdersDependenciesFirst_ThenAlphabetically()
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{
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WriteMod("zebra", "Core");
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WriteMod("apple", "Core");
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WriteMod("Core");
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var mods = ModLoader.Load(ModsRoot);
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Assert.Equal(["Core", "apple", "zebra"], mods.Select(m => m.Id));
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}
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[Fact]
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public void Load_MissingDependency_Throws()
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{
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WriteMod("orphan", "NoSuchMod");
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var exception = Assert.Throws<InvalidDataException>(() => ModLoader.Load(ModsRoot));
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Assert.Contains("NoSuchMod", exception.Message);
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}
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[Fact]
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public void Load_CyclicDependency_Throws()
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{
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WriteMod("a", "b");
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WriteMod("b", "a");
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var exception = Assert.Throws<InvalidDataException>(() => ModLoader.Load(ModsRoot));
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Assert.Contains("Cyclic", exception.Message);
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}
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[Fact]
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public void Load_ActiveSubset_LoadsOnlyRequested()
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{
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WriteMod("Core");
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WriteMod("extra", "Core");
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WriteMod("unused");
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var mods = ModLoader.Load(ModsRoot, ["extra", "Core"]);
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Assert.Equal(["Core", "extra"], mods.Select(m => m.Id));
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}
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[Fact]
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public void Load_IgnoresDirectoriesWithoutAbout()
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{
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WriteMod("Core");
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Directory.CreateDirectory(Path.Combine(ModsRoot, "not-a-mod"));
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var mod = Assert.Single(ModLoader.Load(ModsRoot));
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Assert.Equal("Core", mod.Id);
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Assert.Equal("Core mod", mod.Info.Name);
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}
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[Fact]
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public void FindModsRoot_WalksUpFromNestedDirectory()
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{
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WriteMod("Core");
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var nested = Path.Combine(_root, "bin", "Debug", "net8.0");
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Directory.CreateDirectory(nested);
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Assert.Equal(ModsRoot, ModLoader.FindModsRoot(nested));
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}
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[Fact]
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public void ContentTree_LaterMod_OverridesSameRelativePath()
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{
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WriteMod("Core");
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WriteMod("patch", "Core");
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File.WriteAllText(CreateContentFile("Core", "Textures", "things/rock.png"), "core");
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File.WriteAllText(CreateContentFile("Core", "Textures", "things/tree.png"), "core");
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File.WriteAllText(CreateContentFile("patch", "Textures", "things/rock.png"), "patched");
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var mods = ModLoader.Load(ModsRoot);
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var tree = ModContentTree.Build(mods, "Textures", ".png");
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Assert.Equal(2, tree.Files.Count);
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Assert.True(tree.TryGet("things/rock.png", out var rock));
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Assert.Equal("patch", rock.Mod.Id);
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Assert.Equal("patched", File.ReadAllText(rock.FullPath));
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Assert.True(tree.TryGet("things/tree.png", out var oak));
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Assert.Equal("Core", oak.Mod.Id);
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}
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private string CreateContentFile(string modId, string folder, string relativePath)
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{
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var fullPath = Path.Combine(ModsRoot, modId, folder, relativePath);
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Directory.CreateDirectory(Path.GetDirectoryName(fullPath)!);
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return fullPath;
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}
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}
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