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Fake Driven Testing

Official
dagster-io·vlatest·testing

Generate synthetic data to comprehensively test Dagster pipelines and ensure robust functionality across diverse scenarios.

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This skill no longer installs under the name fake-driven-testing. dagster-io/erk is deleted or private, so it cannot be installed from.

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Repository install instructions

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Publisher

dagster-io

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Install target

Live repository

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About this skill

What it does

This skill enables AI agents to execute fake-driven testing strategies, allowing them to simulate and validate system behaviors without relying on live infrastructure. It facilitates rapid iteration by generating synthetic test data and scenarios to verify logic before deployment.

When to use it

  • You need to validate complex business logic or edge cases where real-world data is scarce or expensive to obtain.
  • Your team requires a fast feedback loop for CI/CD pipelines to catch regressions early without slowing down release cycles.
  • You are developing systems with sensitive data that must remain isolated during the testing phase.
  • You want to reduce infrastructure costs by minimizing the need for spinning up production-like environments for every test run.

Key capabilities

  • Simulates realistic user interactions and system responses using generated fake data.
  • Executes automated test suites designed to uncover logic errors in isolation.
  • Supports rapid prototyping and validation of new features before integration.

Example prompts

  • "Run a fake-driven test suite on the new checkout flow to verify error handling for invalid credit card inputs."
  • "Generate synthetic user profiles and execute tests to ensure the recommendation engine handles edge cases correctly."
  • "Simulate high-load traffic with fake requests to validate the scalability of the API gateway logic."

Tips & gotchas

Ensure your test data generation logic accurately reflects real-world distributions to avoid false positives. While this approach speeds up development, remember that it cannot fully replace production load testing for performance validation.