---
title: "Focus on the Feature, Not the Fixture: GenAI powered GraphQL mocks"
url: https://daily.dev/posts/focus-on-the-feature-not-the-fixture-genai-powered-graphql-mocks-mnqartpob
source_url: https://medium.com/expedia-group-tech/focus-on-the-feature-not-the-fixture-genai-powered-graphql-mocks-ea069670af02
type: article
source: "Expedia Group Tech"
published: 2026-07-31T11:50:08.161Z
updated: 2026-07-31T11:50:31.873Z
tags: ["testing", "rust", "genai", "graphql"]
reading_time: 5
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Focus on the Feature, Not the Fixture: GenAI powered GraphQL mocks

**[Expedia Group Tech](https://daily.dev/sources/expedia)** · 5 min read · 0 upvotes · 0 comments

## Summary

mockql-rs is a Rust-based CLI tool from Expedia Group that uses LLMs to generate contextual GraphQL mock responses. Instead of hand-writing fixture files, developers annotate query fields with a @mock directive and optional hints. The tool parses the operation, validates it against the schema, splits mocked fields from real ones, prompts an LLM to fill only the annotated fields, and merges the result with real upstream data. This allows frontends to keep building while resolvers are pending, without fixtures that drift or rot when the schema changes.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://medium.com/expedia-group-tech/focus-on-the-feature-not-the-fixture-genai-powered-graphql-mocks-ea069670af02>

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---

Tags: [#testing](https://daily.dev/tags/testing), [#rust](https://daily.dev/tags/rust), [#genai](https://daily.dev/tags/genai), [#graphql](https://daily.dev/tags/graphql)

[View this post on daily.dev](https://daily.dev/posts/focus-on-the-feature-not-the-fixture-genai-powered-graphql-mocks-mnqartpob)