65 lines
2.4 KiB
C#
65 lines
2.4 KiB
C#
using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Primitives;
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namespace BuildFlow.Platform.Tests;
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/// 极简字典实现的 IConfiguration，仅供测试使用。
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/// 完整实现 GetSection/GetChildren，让 GetValue<T> 扩展方法（走 ConfigurationBinder）能正确工作。
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/// 注意：ConfigurationBinder.GetValue 内部调用 GetSection(key).Value，故必须返回有效 section。
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internal sealed class DictionaryConfiguration : IConfiguration
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{
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private readonly Dictionary<string, string?> _values = [];
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public string? this[string key]
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{
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get => _values.TryGetValue(key, out var v) ? v : null;
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set => _values[key] = value;
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}
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// 支持集合初始化器语法：new DictionaryConfiguration { ["k"] = "v" }
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public void Add(string key, string? value) => _values[key] = value;
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IEnumerable<IConfigurationSection> IConfiguration.GetChildren() =>
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_values.Select(kv => (IConfigurationSection)new LeafSection(kv.Key, kv.Value)).ToList();
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IChangeToken IConfiguration.GetReloadToken() => EmptyChangeToken.Instance;
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IConfigurationSection IConfiguration.GetSection(string key) =>
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new LeafSection(key, _values.TryGetValue(key, out var v) ? v : null);
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private sealed class LeafSection(string key, string? value) : IConfigurationSection
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{
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public string Key => key;
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public string Path => key;
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public string? Value { get; set; } = value;
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string? IConfiguration.this[string childKey]
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{
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get => null;
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set { }
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}
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IConfigurationSection IConfiguration.GetSection(string childKey) =>
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new LeafSection($"{key}:{childKey}", null);
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IEnumerable<IConfigurationSection> IConfiguration.GetChildren() => [];
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IChangeToken IConfiguration.GetReloadToken() => EmptyChangeToken.Instance;
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}
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/// <summary>永不变更的占位 IChangeToken，避免引入额外包依赖。</summary>
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private sealed class EmptyChangeToken : IChangeToken
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{
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public static readonly EmptyChangeToken Instance = new();
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public bool ActiveChangeCallbacks => false;
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public bool HasChanged => false;
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public IDisposable RegisterChangeCallback(Action<object> callback, object? state) =>
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new NoopDisposable();
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private sealed class NoopDisposable : IDisposable
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{
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public void Dispose() { }
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}
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}
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}
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