No. 10 of 28 ·Test Data Generation Tools

Fishery

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Fishery is ranked #10 of 28 in test data generation tools on Freedom251. There is a free plan.

Fishery plans and pricing

Free Free Free software · MIT license github.com · 4 Oct 2026

Purpose: Fishery is a JavaScript library for setting up objects as test data.
TypeScript: Fishery supports typed factory parameters and return objects, and can also be used without TypeScript.
Build objects: Factories provide build() to create objects, with passed parameters overlaid on factory defaults.
Create objects: Factories can define onCreate behavior so create() performs asynchronous work and returns a promise.
Factory features: Factories support sequences, transient parameters, associations, and after-build and after-create hooks.
Reusable builders: The documentation describes extending factories with reusable builder methods by subclassing Factory.
Install: The README gives npm install --save-dev fishery and yarn add --dev fishery as installation commands.
License: The repository identifies Fishery as free software and provides an MIT license.
Maintainer: The repository says it is maintained and funded by thoughtbot, inc.
Support channel: The repository links to GitHub Issues for reporting bugs and requesting changes.
Audience: The README describes Fishery as useful for tests and other situations where JavaScript data needs to be set up.
Price from: Free

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