build-flow.api/tests/BuildFlow.Rag.Tests/GetDocumentChunksQueryHandlerTests.cs
xiangning 7479521546 feat(rag): 实现RAG模块的Hybrid检索和向量索引优化
- 添加HNSW向量索引提升检索性能
- 实现Hybrid检索模式支持向量和关键词双路召回
- 采用RRF算法融合多路召回结果
- 支持ParentChild分块模式的上下文回填
- 优化向量写入采用批量SQL操作提升性能
- 添加RAG PostgreSQL连接字符串配置
- 更新部署脚本增加PGVector集成测试
- 修正表名引用从document_chunks到b_document_chunks
- 重构RagRetrievalService实现完整的检索流程
- 增加重排策略支持关键词和LLM重排
- 修改服务器部署地址配置
2026-08-11 10:59:09 +08:00

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using BuildFlow.Application.Document.Handlers;
using BuildFlow.Application.Document.Queries;
using BuildFlow.Infrastructure.Persistence;
using BuildFlow.Shared.Domain.Errors;
using BuildFlow.Shared.Domain.Exceptions;
using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using Xunit;
namespace BuildFlow.Rag.Tests;
/// <summary>
/// Get 文档分块查询处理器测试。
/// 注意:该 Handler 在取回分块后执行 raw SQL(针对 b_document_chunks),依赖真实关系型(Postgres)库;
/// 当前存在已知 P0 表名漂移(document_chunks vs b_document_chunks),此处仅覆盖「依赖调用之前」的
/// 文档不存在→NotFound 前置分支,不假设该 bug 已修复,raw SQL 分支交由集成测试覆盖。
/// </summary>
public class GetDocumentChunksQueryHandlerTests
{
[Fact]
public async Task Handle_DocumentNotFound_ThrowsNotFound()
{
await using var db = CreateDb();
var handler = new GetDocumentChunksQueryHandler(db);
var act = async () => await handler.Handle(
new GetDocumentChunksQuery(Guid.NewGuid()), CancellationToken.None);
var ex = await act.Should().ThrowAsync<NotFoundException>();
ex.Which.Code.Should().Be(ErrorCode.NotFound);
}
private static RagDbContext CreateDb()
{
var options = new DbContextOptionsBuilder<RagDbContext>()
.UseInMemoryDatabase($"rag-get-chunks-{Guid.NewGuid():N}")
.Options;
var db = new RagDbContext(options);
db.SavingChanges += (_, _) => RagTestDb.FillAudit(db);
return db;
}
}