testing-domain

Write domain and unit tests for the widget host app. Use when testing entities, value objects, invariants, domain services, and application logic with deterministic fixtures.

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Repository: ForceInjection/domain-driven-design-skills
Last source activity: May 8, 2026 at 03:07
Detected SKILL.md language: English
Stars: 25
Forks: 7

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academic-research

Conduct deep academic research for philosophy, neuroscience, cognitive science, and theoretical computer science (computability, complexity, AI theory, logic). Use when user asks to: research academic topics, find scholarly papers, conduct literature reviews, analyze citations, synthesize research findings, explore philosophical arguments, investigate consciousness/cognition, study computability/decidability/Turing machines, or analyze academic debates. Triggers on: 'research papers', 'literature review', 'academic sources', 'scholarly articles', 'philosophy of mind', 'computability theory', 'neuroscience studies', 'find papers on', 'what does the research say'.

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action-plan-150

Create clear action plans with steps, success criteria, and risk awareness. Use before implementing features, making changes, starting projects, or anytime you need a roadmap to success. Triggers on "plan this", "how should we approach", "what's the strategy", "steps to complete", or when facing complex multi-step work.

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add-keyboard-nav

Add keyboard navigation to a feature using CommandRegistryService. Use when implementing keyboard shortcuts, vim-style navigation, or hotkeys for a page or component.

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name	testing-domain
description	Write domain and unit tests for the widget host app. Use when testing entities, value objects, invariants, domain services, and application logic with deterministic fixtures.

Testing Domain

Overview

Validate domain rules and invariants without UI or infrastructure dependencies.

Focus areas

Entity and value object behavior
Aggregate invariants
Domain services
Application use cases (when pure)

Definition of done (DoD)

New domain logic has corresponding unit tests
Tests cover happy path + at least one edge/error case
Tests are deterministic (no random, no DateTime.Now)
Tests run in under 1 second each
No infrastructure/UI dependencies in domain tests

Workflow

Build fixtures for domain objects.
Test invariants and edge cases.
Keep tests fast and deterministic.
Avoid infrastructure dependencies.

Guidance

Use builders/factories to reduce test setup noise.
Prefer explicit assertions over snapshots.
Name tests after the rule being validated.

References

references/fixtures.md for fixture patterns.
references/invariant-tests.md for invariant coverage.

testing-domain

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Review the source files

More from this repository

More from this repository

Testing Domain

Overview

Focus areas

Definition of done (DoD)

Workflow

Guidance

References

Testing Domain

Overview

Focus areas

Definition of done (DoD)

Workflow

Guidance

References