Generate Mock

Generate deterministic mocks for pytest, Vitest, and MSW test environments.

1|1|Updated Mar 31, 2026

Search Tags:#vitest #testing #pytest #mocking #msw #unittest-mock

Ready to run

npx skills add https://github.com/btabaska/simpler-grants-documentation-automation --skill generate-mock

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: Generate Mock
Source: https://github.com/btabaska/simpler-grants-documentation-automation/tree/main/.cursor/skills/skill-generate-mock
Command: npx skills add https://github.com/btabaska/simpler-grants-documentation-automation --skill generate-mock

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Solves the challenge of isolating unit tests by generating deterministic mocks for interfaces, services, or modules, ensuring tests run with realistic return values and without triggering real network or I/O calls.

Core Features & Use Cases

Deterministic mocks for target frameworks (pytest, vitest, or MSW) to match the test environment.
Framework-specific mock generation to produce appropriate stubs (unittest.mock fixtures, vi.mock blocks, or MSW handlers).
Safe synthetic data and zero side effects to prevent real interactions during tests.

Quick Start

Tell the tool what to mock and which framework you use, then run the generator to produce the appropriate mock files.

Frequently Asked Questions about Generate Mock

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I generate deterministic mocks for pytest and Vitest unit tests?▼

To generate deterministic mocks for pytest and Vitest, you specify the target dependency and framework, producing unittest.mock fixtures or vi.mock blocks with synthetic data to isolate tests without real network calls.

Can I mock external APIs and fetch clients in frontend tests using MSW?▼

Yes, you can mock external APIs and fetch clients in frontend tests by generating MSW handlers that intercept network requests, ensuring tests run with realistic return values and zero side effects.

What's the best way to isolate unit tests from real network or I/O calls?▼

The best way to isolate unit tests from real network or I/O calls is by generating framework-specific mocks with safe synthetic data, preventing real interactions while providing deterministic return values.

Does this mock generation approach work across Python pytest and frontend Vitest environments?▼

Yes, this mock generation approach works across Python pytest and frontend Vitest environments by producing framework-specific stubs like unittest.mock fixtures for pytest and vi.mock blocks for Vitest.

When do I need framework-specific mocks instead of manual stubs for unit testing?▼

You need framework-specific mocks instead of manual stubs when tests require deterministic return values across pytest, Vitest, or MSW environments, ensuring consistent behavior without triggering real network or I/O calls.