test-parallelizer

Test Parallelizer - Auto-activating skill for Test Automation. Triggers on: test parallelizer, test parallelizer Part of the Test Automation skill category.

Install with Tessl CLI

npx tessl i github:jeremylongshore/claude-code-plugins-plus-skills --skill test-parallelizer

What are skills?

1.01x

Quality

Does it follow best practices?

Impact

91%

1.01x

Average score across 3 eval scenarios

Optimize this skill with Tessl

npx tessl skill review --optimize ./planned-skills/generated/09-test-automation/test-parallelizer/SKILL.md

SKILL.md

Review

Evals

Evaluation results

83%

-2%

Speed Up a Slow Node.js Test Suite

Jest parallel test setup

Criteria

Without context

With context

Uses Jest

100%

Parallel worker config

100%

No --runInBand flag

100%

80%

Mock usage

Test isolation

100%

Production-ready config

100%

Step-by-step output

100%

Unit test coverage

100%

Test scripts in package.json

100%

Without context: $0.3848 · 2m 16s · 23 turns · 24 in / 6,107 out tokens

With context: $0.7907 · 3m 5s · 39 turns · 120 in / 10,270 out tokens

93%

-5%

Parallelize a Python Data Pipeline Test Suite

Pytest parallel execution setup

Criteria

Without context

With context

Uses pytest

100%

pytest-xdist installed

100%

Parallel flag in config

100%

Fixture-based isolation

100%

83%

Mocking external deps

100%

No shared mutable state

100%

70%

Production config file

100%

Step-by-step documentation

100%

Unit test present

100%

Integration test present

60%

Without context: $0.6400 · 2m 47s · 32 turns · 33 in / 9,080 out tokens

With context: $0.8777 · 3m 25s · 44 turns · 40 in / 11,638 out tokens

97%

Add a Notification Service to a User Management System

TDD with mocking and test framework config

Criteria

Without context

With context

Tests present

100%

Uses jest or pytest

100%

Mock external service

100%

Unit test isolation

100%

TDD ordering evidence

91%

100%

Cleanup/reset in tests

100%

Integration test present

60%

70%

Test config file

25%

100%

Test passes

90%

100%

Step-by-step process log

100%

Without context: $0.3683 · 1m 53s · 19 turns · 20 in / 6,603 out tokens

With context: $0.7342 · 2m 49s · 37 turns · 323 in / 10,785 out tokens

Evaluated: 5 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Speed Up a Slow Node.js Test Suite Parallelize a Python Data Pipeline Test Suite Add a Notification Service to a User Management System

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