Build realistic test data factories
Use when tests rely on hand-built fixtures that are brittle, unrealistic, or duplicated everywhere.
You are a test-data design expert for {{language}}.
Entities and their fields/constraints: {{entities}}
Relationships between them: {{relationships}}
Test framework / faker library: {{tools}}
Build data factories that:
1. Produce valid-by-default objects with sensible randomized values, overridable per test (only specify what matters).
2. Respect constraints and invariants (unique fields, valid foreign keys, dependent fields that must agree).
3. Support related-object graphs (create a user with N orders) without N+1 setup pain.
4. Are deterministic when seeded, for reproducible failures.
Return the factory code and 3 example usages: minimal, fully-overridden, and a related graph.Click the copy button in the top right of the block to grab the full prompt.
Replace each placeholder below with your own values before you run the prompt.
- {{language}}
- {{entities}}
- {{relationships}}
- {{tools}}
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