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namespace SemanticKernelStudy.Test;
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/// <summary>
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///
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/// </summary>
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public class TryTest
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{
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//推荐：Xunit.DependencyInjection.Logging 库，与 Microsoft.Extensions.Logging 集成
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private readonly ILogger<TryTest> _logger;
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public TryTest(ILogger<TryTest> logger)
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{
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_logger = logger;
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}
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[Fact]
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public void Try_SK_Test()
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{
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KernelFunction f1 = KernelFunctionFactory.CreateFromPrompt("河南省会在哪里？");
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KernelFunction f2 = KernelFunctionFactory.CreateFromMethod(() => "河南省会在郑州");
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KernelFunction f3 = KernelFunctionFactory.CreateFromPrompt(string.Empty);
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}
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[Fact]
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public async Task Try_SK_Filter_Test()
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{
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var builder = Kernel.CreateBuilder();
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// This filter overrides result with "Result from filter" value.
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builder.Services.AddSingleton<IFunctionInvocationFilter, FunctionFilterExample>();
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var kernel = builder.Build();
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var function = KernelFunctionFactory.CreateFromMethod(() => "Result from method");
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var result = await kernel.InvokeAsync(function);
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Console.WriteLine(result);
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Console.WriteLine($"Metadata: {string.Join(",", result.Metadata!.Select(kv => $"{kv.Key}: {kv.Value}"))}");
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}
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[Fact]
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public async Task Try_SK_Filter2_Test()
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{
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var builder = Kernel.CreateBuilder();
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// This filter overrides result with "Result from filter" value.
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builder.Services.AddSingleton<IFunctionInvocationFilter, FunctionFilterExample>();
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var kernel = builder.Build();
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var function = KernelFunctionFactory.CreateFromMethod(() => "Result from method");
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var result = await kernel.InvokeAsync(function);
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Console.WriteLine(result);
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Console.WriteLine($"Metadata: {string.Join(",", result.Metadata!.Select(kv => $"{kv.Key}: {kv.Value}"))}");
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}
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[Fact]
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public void Try_Logger_Test()
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{
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var msg = "使用 Xunit.DependencyInjection 实现的 {abc} 输出测试内容";
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_logger.LogInformation(msg);
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Assert.True(true, msg);
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}
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private sealed class FunctionFilterExample : IFunctionInvocationFilter
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{
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public async Task OnFunctionInvocationAsync(Microsoft.SemanticKernel.FunctionInvocationContext context, Func<Microsoft.SemanticKernel.FunctionInvocationContext, Task> next)
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{
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// Example: override kernel arguments
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context.Arguments["input"] = "new input";
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// This call is required to proceed with next filters in pipeline and actual function.
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// Without this call next filters and function won't be invoked.
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await next(context);
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// Example: get function result value
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var value = context.Result!.GetValue<object>();
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// Example: get token usage from metadata
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var usage = context.Result.Metadata?["Usage"];
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// Example: override function result value and metadata
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Dictionary<string, object?> metadata = context.Result.Metadata is not null ? new(context.Result.Metadata) : [];
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metadata["metadata_key"] = "metadata_value";
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context.Result = new FunctionResult(context.Result, "Result from filter")
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{
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Metadata = metadata
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};
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}
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}
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}
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