langchain4j-testing-strategies SKILL.md skillA
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mdr add giuseppe-trisciuoglio/developer-kit/langchain4j-testing-strategies@git:20260324.a02e282Pins git:20260324.a02e282 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
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- SKILL.md skill
- Repository
- giuseppe-trisciuoglio/developer-kit
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plugins/developer-kit-java/skills/langchain4j-testing-strategies/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260324.a02e282, committed Mar 24, 2026
- First version recorded
- Feb 7, 2026
- Size
- 7,240 bytes
- Repository stars
- 367
- License
- MIT
Provides unit test, integration test, and mock AI patterns for LangChain4j applications. Creates mock LLM responses, tests retrieval chains, validates RAG workflows, and implements Testcontainers-based integration tests for Java AI services. Use when unit testing AI services, integration testing LangChain4j components, mocking AI models, or testing LLM-based Java applications.
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What the file says
# LangChain4J Testing Strategies
## Overview
Patterns for unit testing with mocks, integration testing with Testcontainers, and end-to-end validation of RAG systems, AI Services, and tool execution.
## When to Use
- **Unit testing AI services**: When you need fast, isolated tests for services using LangChain4j AiServices
- **Integration testing LangChain4j components**: When testing real ChatModel, EmbeddingModel, or RAG pipelines with Testcontainers
- **Mocking AI models**: When you need deterministic responses without calling external APIs
- **Testing LLM-based Java applications**: When validating RAG workflows, tool execution, or retrieval chains
## Instructions
### 1. Unit Testing with Mocks
Use mock models for fast, isolated testing. See `references/unit-testing.md`.
```java
ChatModel mockModel = mock(ChatModel.class);
when(mockModel.generate(any(String.class)))
.thenReturn(Response.from(AiMessage.from("Mocked response")));
var service = AiServices.builder(AiService.class)
.chatModel(mockModel)
.build();
```
### 2. Configure Testing Dependencies
Setup Maven/Gradle dependencies. See `references/testing-dependencies.md`.
…Read the whole file at its exact version.
How to install
mdr add giuseppe-trisciuoglio/developer-kit/langchain4j-testing-strategies@sha256:1ceb073d7c28da64The line at the top of this page pins the label git:20260324.a02e282, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
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Versions
The registry has recorded 5 versions of this file, between Feb 7, 2026 and Mar 24, 2026, about one every 11 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260324.a02e282 latest | 2026-03-24 | a02e282 | 7,240 B | A | view · diff |
| git:20260228.3187e79 | 2026-02-28 | 3187e79 | 9,193 B | A | view · diff |
| git:20260223.c6d4db1 | 2026-02-23 | c6d4db1 | 9,195 B | A | view · diff |
| v1.1.0 | 2026-02-08 | 147afce | 9,325 B | A | view · diff |
| v1.1.0 | 2026-02-07 | 1a732c7 | 8,154 B | A | view |
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Source
giuseppe-trisciuoglio/developer-kit · 367 stars · license MIT · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_gq4ggc6puy56tcla GET https://markdownregistry.com/api/v1/resolve?ref=giuseppe-trisciuoglio/developer-kit/langchain4j-testing-strategies GET https://markdownregistry.com/api/v1/blob/1ceb073d7c28da64f5964f2fecd4606fbc18cc457eef30766697e05eb1868668
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