bug-reproduction-test-generator

Automatically generates executable tests that reproduce reported bugs from issue reports and code repositories. Use when users need to: (1) Create a test that reproduces a bug described in an issue report, (2) Generate failing tests from bug descriptions, stack traces, or error messages, (3) Validate bug reports by creating reproducible test cases, (4) Convert issue reports into executable regression tests. Takes a repository and issue report as input and produces test code that reliably triggers the reported bug.

Install with Tessl CLI

npx tessl i github:ArabelaTso/Skills-4-SE --skill bug-reproduction-test-generator

What are skills?

Review — 88%

Does it follow best practices?

If you maintain this skill, you can automatically optimize it using the tessl CLI to improve its score:

npx tessl skill review --optimize ./path/to/skill

Learn more

Validation — 11 / 11 Passed

Validation for skill structure

SKILL.md

Review

Evals

Evaluation results

100%

Config Loader Bug Reproduction

Bug reproduction test with stack trace

Criteria

Without context

With context

Uses pytest framework

100%

Issue reference in test

100%

Asserts buggy behavior

100%

Inline comments present

100%

Does not modify source

100%

Markdown summary present

100%

Summary: how it reproduces

100%

Summary: symptoms validated

100%

Summary: run instructions

100%

Plan-for-fix comment

100%

Without context: $0.2459 · 1m 9s · 16 turns · 19 in / 3,780 out tokens

With context: $0.6217 · 1m 53s · 32 turns · 451 in / 6,667 out tokens

93%

53%

Date Utility Bug Investigation

Underspecified issue handling and assumption documentation

Criteria

Without context

With context

Uses Jest framework

100%

Issue reference in test

100%

Assumptions stated in test

100%

Summary documents what is unclear

53%

Asserts buggy behavior

100%

Does not modify source

100%

Markdown summary present

100%

Summary: assumptions section

100%

Without context: $0.3244 · 1m 37s · 17 turns · 21 in / 4,979 out tokens

With context: $0.7673 · 3m 6s · 34 turns · 296 in / 9,891 out tokens

84%

29%

Data Validator Regression Test

Minimal test with assertion specificity

Criteria

Without context

With context

Uses pytest/class style

100%

Asserts ValueError type

33%

100%

Asserts error message text

Issue reference in test

100%

Inline comments in test body

90%

Minimal setup

100%

Does not modify source

100%

Plan-for-fix comment

100%

Markdown summary present

100%

Summary: run instructions

100%

Without context: $0.5085 · 1m 52s · 27 turns · 34 in / 6,365 out tokens

With context: $0.6523 · 2m 21s · 29 turns · 35 in / 7,844 out tokens

Evaluated: about 18 hours ago
Agent: Claude Code

Table of Contents

Config Loader Bug Reproduction Date Utility Bug Investigation Data Validator Regression Test

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.