pypict Test Case Generator (Claude Skill) — Installer & Démo en direct

Pourquoi l'utiliser

Fonctionnalités clés

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.

Démo en direct

Aperçu en pratique

pypict-claude-skill.replay ▶ prêt

0/0

Installer

Choisissez votre client

~/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
    }
  }
}

Ouvrez Claude Desktop → Settings → Developer → Edit Config. Redémarrez après avoir enregistré.

~/.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 utilise le même schéma mcpServers que Claude Desktop. La config projet l'emporte sur la globale.

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
    }
  }
}

Cliquez sur l'icône MCP Servers dans la barre latérale Cline, puis "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
    }
  }
}

Même format que Claude Desktop. Redémarrez Windsurf pour appliquer.

~/.continue/config.json

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

Continue utilise un tableau d'objets serveur plutôt qu'une 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"
        ]
      }
    }
  }
}

Ajoutez dans context_servers. Zed recharge à chaud à la sauvegarde.

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

Une seule ligne. Vérifiez avec claude mcp list. Supprimez avec claude mcp remove.

Cas d'usage

Usages concrets : pypict Test Case Generator

Cover a feature with combinatorial inputs without writing 64 tests

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

Quand l'utiliser : Feature has 4+ enum-ish parameters and exhaustive testing would explode.

Prérequis

Server/skill installed and authenticated — See repo README

Déroulement

Model

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

→ Pict model + ~12 pairwise cases
Generate tests

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

→ pytest file with parametrize

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

Pièges

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.

Coût et limites

Coût d'exécution

Quota d'API: See provider docs for rate limits
Tokens par appel: Varies by tool
Monétaire: See repo README for pricing details
Astuce: Cache tool results and avoid repeated identical calls.

Sécurité

Permissions, secrets, portée

Stockage des identifiants : Use environment variables; never commit secrets

Sortie de données : Tool calls go to the provider's API as documented

Dépannage

Erreurs courantes et correctifs

pict binary not found

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

Vérifier : pypict.exec_pict('test')

constraints rejected

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

Vérifier : Run validator first

Alternatives

pypict Test Case Generator vs autres

Alternative	Quand l'utiliser	Compromis
Plain parametrize	Few parameters	No combinatorial benefit

Plus

Ressources

📖 Lire le README officiel sur GitHub

🐙 Voir les issues ouvertes

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