Unit Testing

Repository structure, build/test commands, coding style, and contribution rules for opal-frontend. Use when navigating the repo, running or debugging builds/lint/tests, following style conventions, or setting up local tooling.

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

Cypress component testing guidance for opal-frontend. Use when adding or updating component specs, configuring component test setup, or choosing selectors, mocks, and POM Actions or Flows.

Use when validating product assumptions before building, discovering unmet user needs, understanding customer problems and workflows, testing concepts or positioning, researching target markets, identifying jobs-to-be-done and hiring triggers, uncovering pain points and workarounds, or when users mention user research, customer interviews, surveys, discovery interviews, validation studies, or voice of customer.

SDLC workflow automation that implements features using TDD skill, runs test-runner skill, and prepares commit commands for user review. Use when user provides a spec/plan for a new feature. Workflow: (1) invokes test-driven-development skill with spec, (2) invokes test-runner skill, (3) prepares git commands for user to execute manually.

Comprehensive prompt iteration workflow for debugging and improving Langfuse prompts. Analyzes codebase usage, sets up reproducible tests, runs iterative refinement cycles with user feedback. Use when user says "prompt X isn't working right", "improve prompt", "iterate on prompt", "refine prompt", or "test prompt changes".

Rule 07: Testing. Use when writing tests, reviewing test coverage, or setting up testing.

Stratégie de Tests React. Use when writing tests, reviewing test coverage, or setting up testing.

Testing Flutter - Stratégie Complète. Use when writing tests, reviewing test coverage, or setting up testing.

Analyze test differences between runs to identify flaky tests and consistency issues. Use to find tests that fail intermittently.

Generate test files and coordinate test-driven development (TDD). Use when creating tests before implementation or during test phase.

[CLAUDE CODE ONLY] Leverage Gemini CLI for AI peer review, second opinions on architecture and design decisions, cross-validation of implementations, security analysis, alternative approaches, and holistic codebase analysis. Requires terminal access to execute Gemini CLI commands. Use when making high-stakes decisions, reviewing complex architecture, analyzing large codebases (1M token context window), or when explicitly requested for a second AI perspective. Must be explicitly invoked using skill syntax.

Testing - Principes TDD/BDD. Use when writing tests, reviewing test coverage, or setting up testing.

Transform nebulous ideas into sharp, testable frameworks through multi-perspective dialectical interrogation. Use when developing vague intuitions, pressure-testing concepts, structuring half-formed frameworks, or distinguishing new ideas from existing concepts. Triggers include "explore this idea," "think through X," or "challenge my thinking."

Coordinate multi-agent software delivery with guardrails for planning, implementation, testing, and release.

Use when you need to choose the right visualization for your data and question, then create a narrated report that highlights insights and recommends actions. Invoke when analyzing data for patterns (trends, comparisons, distributions, relationships, compositions), building dashboards or reports, presenting metrics to stakeholders, monitoring KPIs, exploring datasets for insights, communicating findings from analysis, or when user mentions "visualize this", "what chart should I use", "create a dashboard", "analyze this data", "show trends", "compare these metrics", "report on", "what does this data tell us", or needs to turn data into actionable insights. Apply to business analytics (revenue, growth, churn, funnel, cohort, segmentation), product metrics (usage, adoption, retention, feature performance, A/B tests), marketing analytics (campaign ROI, attribution, funnel, customer acquisition), financial reporting (P&L, budget, forecast, variance), operational metrics (uptime, performance, capacity, SLA), sales

Regra 07: Testes. Use when writing tests, reviewing test coverage, or setting up testing.

Coordinate research-focused testing and quality validation with clear constraints, gates, and confidence ceilings.

Use when stakeholders have conflicting priorities and need alignment, suspect decision blind spots from single perspective, need to pressure-test proposals before presenting, want empathy for different viewpoints (eng vs PM vs legal vs user), building consensus across functions, evaluating tradeoffs with multi-dimensional impact, or when user mentions "what would X think", "stakeholder alignment", "see from their perspective", "blind spots", or "conflicting interests".

End-to-end feature delivery (discovery → design → build → test → release) with explicit quality gates and confidence ceilings.