Name: pantheon-ai/test-driven-development
Author: pantheon-ai

pantheon-ai/test-driven-development

Master Test-Driven Development with deterministic red-green-refactor workflows, test-first feature delivery, bug reproduction through failing tests, behavior-focused assertions, and refactoring safety; use when implementing new functions, changing APIs, fixing regressions, or restructuring code under test.

Review — 100%

Does it follow best practices?

Evaluation — 86%

↑ 1.05x

Agent success when using this tile

Validation — 11 / 11 Passed

Validation for skill structure

Evaluation results

48%

15%

User Authentication Service

Red-Green-Refactor Cycle

Criteria

Without context

With context

Test-first implementation

Verified test failures

Minimal implementation

30%

80%

Refactoring evidence

20%

Red-green cycle discipline

10%

Test structure follows AAA

70%

100%

One Act per test

70%

80%

Single behavior per test

70%

90%

Descriptive test names

90%

100%

93%

Shopping Cart Bug Fix

Behavioral Testing and Assertions

Criteria

Without context

With context

Bug reproduction test

80%

87%

Behavior-focused tests

87%

100%

Descriptive test naming

80%

One assertion per test

90%

Specific assertions used

90%

100%

Edge case coverage

80%

100%

Clear test structure

90%

Isolated test cases

100%

Bug fix verification

80%

90%

100%

Multi-Channel Notification Service

Dependency Injection and Mocking

Criteria

Without context

With context

Constructor dependency injection

100%

External dependencies mocked

100%

Interface-based design

100%

Test data visibility

100%

Independent test execution

100%

Mock verification

100%

Error scenario testing

100%

Clear test boundaries

100%

Deterministic test data

100%

96%

-1%

File Processing Queue System

Asynchronous Code Testing

Criteria

Without context

With context

No arbitrary sleeps

100%

Proper async assertions

87%

Deterministic timing

100%

AAA structure in async

90%

100%

Isolated async tests

100%

90%

Error case handling

100%

90%

Stable test execution

100%

Mock async dependencies

100%

Clear async test names

100%

95%

Multi-Step Order Processing System

Complex Workflow Testing

Criteria

Without context

With context

Single behavior per test

93%

No behavior combination

60%

87%

Visible test data

100%

Independent test cases

100%

Logical test organization

100%

Clear workflow step tests

100%

80%

Error scenario isolation

100%

Descriptive test structure

100%

Clean test setup

100%

Install with Tessl CLI

npx tessl i pantheon-ai/test-driven-development

Evaluated: 4 days ago
Agent: Claude Code

Table of Contents

User Authentication Service Shopping Cart Bug Fix Multi-Channel Notification Service File Processing Queue System Multi-Step Order Processing System