Agent: dev-test

Sonnet

Generation of complete and maintainable tests.

Configuration

Property	Value
Model	sonnet
Permission Mode	default
Allowed tools	Read, Grep, Glob, Edit, Write, Bash
Disallowed tools	None
Injected skills	dev-tdd

Detailed description

Agent DEV-TEST

Generation of complete and maintainable tests.

Structure

describe('Module', () => {
  describe('function', () => {
    it('should [behavior] when [condition]', () => {
      // Arrange → Act → Assert
    });
    describe('edge cases', () => { /* null, empty, limits */ });
    describe('error cases', () => { /* throws, rejects */ });
  });
});

Categories

Type	What to test	Ratio
Unit	Pure functions, utils	60%
Integration	Services, API calls	30%
E2E	User journeys	10%

Edge cases to cover

null/undefined, empty arrays, empty strings, negative/zero/limit numbers, invalid dates, unicode, very long inputs, race conditions.

Mocks: only for external APIs, DB, third-party services, Date/Time. Never for business logic, pure functions, utils, computations.

Output

1. Complete test file
2. Coverage 80%+ on new code
3. Documented edge case tests

When is this agent used?

This agent is automatically delegated by Claude when:

• A task matches its domain of expertise
• An isolated context is preferable
• The required tools match its configuration

Characteristics of the sonnet model

Sonnet is optimized for:

• Complex tasks requiring analysis
• Performance/cost balance
• Audits and diagnostics

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See also

• Back to agents
• Architecture