pypict Test Case Generator (Claude Skill) — Instalar & Demo ao vivo

Por que usar

Principais recursos

Pairwise/N-wise test generation
Constraint syntax (IF/THEN parameter rules)
Translates plain-English parameter descriptions into pict models
Outputs test cases as a table or as test code skeletons
Works with pytest, JUnit, etc.

Demo ao vivo

Como fica na prática

pypict-claude-skill.replay ▶ pronto

0/0

Instalar

Escolha seu cliente

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "pypict-claude-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/omkamal/pypict-claude-skill",
        "~/.claude/skills/pypict-claude-skill"
      ],
      "_inferred": true
    }
  }
}

Abra Claude Desktop → Settings → Developer → Edit Config. Reinicie após salvar.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "pypict-claude-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/omkamal/pypict-claude-skill",
        "~/.claude/skills/pypict-claude-skill"
      ],
      "_inferred": true
    }
  }
}

Cursor usa o mesmo esquema mcpServers que o Claude Desktop. Config de projeto vence a global.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "pypict-claude-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/omkamal/pypict-claude-skill",
        "~/.claude/skills/pypict-claude-skill"
      ],
      "_inferred": true
    }
  }
}

Clique no ícone MCP Servers na barra lateral do Cline, depois "Edit Configuration".

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "pypict-claude-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/omkamal/pypict-claude-skill",
        "~/.claude/skills/pypict-claude-skill"
      ],
      "_inferred": true
    }
  }
}

Mesmo formato do Claude Desktop. Reinicie o Windsurf para aplicar.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "pypict-claude-skill",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/omkamal/pypict-claude-skill",
        "~/.claude/skills/pypict-claude-skill"
      ]
    }
  ]
}

O Continue usa um array de objetos de servidor em vez de um map.

~/.config/zed/settings.json

{
  "context_servers": {
    "pypict-claude-skill": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/omkamal/pypict-claude-skill",
          "~/.claude/skills/pypict-claude-skill"
        ]
      }
    }
  }
}

Adicione em context_servers. Zed recarrega automaticamente ao salvar.

claude mcp add pypict-claude-skill -- git clone https://github.com/omkamal/pypict-claude-skill ~/.claude/skills/pypict-claude-skill

Uma linha só. Verifique com claude mcp list. Remova com claude mcp remove.

Casos de uso

Usos do mundo real: pypict Test Case Generator

Cover a feature with combinatorial inputs without writing 64 tests

👤 QA + devs writing integration tests ⏱ ~15 min intermediate

Quando usar: Feature has 4+ enum-ish parameters and exhaustive testing would explode.

Pré-requisitos

Server/skill installed and authenticated — See repo README

Fluxo

Model

Use pypict skill: model checkout with payment_method=[card, paypal, applepay], shipping=[standard, express, intl], discount=[none, code, member], currency=[USD, EUR].✓ Copiado

→ Pict model + ~12 pairwise cases
Generate tests

Emit pytest tests from those cases against checkout().✓ Copiado

→ pytest file with parametrize

Resultado: Real combinatorial coverage with ~12 cases instead of 81.

Armadilhas

Pairwise misses higher-order bugs (3-way interactions). For safety-critical paths, use 3-wise. — Pairwise misses higher-order bugs (3-way interactions). For safety-critical paths, use 3-wise.

Custo e limites

O que custa rodar

Cota de API: See provider docs for rate limits
Tokens por chamada: Varies by tool
Monetário: See repo README for pricing details
Dica: Cache tool results and avoid repeated identical calls.

Segurança

Permissões, segredos, alcance

Armazenamento de credenciais: Use environment variables; never commit secrets

Saída de dados: Tool calls go to the provider's API as documented

Solução de problemas

Erros comuns e correções

pict binary not found

Install Microsoft's pict tool (or pypict bundles it). See pypict README.

Verificar: pypict.exec_pict('test')

constraints rejected

pict constraint syntax is strict: IF [A] = "x" THEN [B] <> "y";. Use the skill's validator.

Verificar: Run validator first

Alternativas

pypict Test Case Generator vs. outros

Alternativa	Quando usar	Troca
Plain parametrize	Few parameters	No combinatorial benefit

Mais

Recursos

📖 Leia o README oficial no GitHub

🐙 Ver issues abertas

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