testing-data

Build integration tests for data access in the widget host app. Use when setting up test databases, running EF Core migrations for tests, or validating repository behavior end-to-end.

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npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/testing/testing-data-yosrbennagra-3sc

SKILL.md

Testing Data

Overview

Validate data access behavior with integration tests against a real or ephemeral database.

Core areas

Test database orchestration
Migrations and schema setup
Repository integration tests

Definition of done (DoD)

Each test gets isolated DB instance (in-memory or temp file)
Migrations applied automatically before tests run
Test data seeded via explicit setup, not global fixtures
No test depends on another test's data
Tests clean up connections/resources in Dispose
Repository tests cover CRUD + edge cases (not found, duplicates)

Workflow

Provision a test database per test run.
Apply migrations before tests.
Seed minimal data for each scenario.
Tear down and clean after tests.

Guidance

Prefer isolated databases per test suite.
Avoid shared mutable state across tests.
Keep tests slower but reliable.

References

references/test-db.md for DB setup options.
references/migrations.md for test migration usage.