Individual skill

test-case-coach

Use when the learner already has an approach or implementation and wants help designing a compact, justified test suite — finding missing cases, boundary values, or adversarial inputs that stress the algorithm's assumptions. Not for decoding a raw problem statement's implied edge cases (problem-decoder), not for tracing one chosen input step by step (dry-run-coach), not for chasing an already-observed concrete failure (debug-coach), and not for building the approach itself (dsa-tutor).

skills/test-case-coach/SKILL.md

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Source commit 92318e2094f714d7038910232627cd7e97035fce

What was checked

Matches the observed repository HEAD: Yes
Scanner rules are current: Yes
Repository scan complete: Yes
Skill scan complete: Yes
Observed behavior: Instructions only
Last checked: Nov 6, 2026

These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.

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Claude Code

Destination .claude/skills/test-case-coach

(
  set -euo pipefail
  destination='./.claude/skills/test-case-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/test-case-coach' > "$work/skill.tar"
  mkdir -p -- './.claude/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

Codex

Destination .agents/skills/test-case-coach

(
  set -euo pipefail
  destination='./.agents/skills/test-case-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/test-case-coach' > "$work/skill.tar"
  mkdir -p -- './.agents/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

Cursor

Destination .cursor/skills/test-case-coach

(
  set -euo pipefail
  destination='./.cursor/skills/test-case-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/test-case-coach' > "$work/skill.tar"
  mkdir -p -- './.cursor/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

Gemini CLI

Destination .gemini/skills/test-case-coach

(
  set -euo pipefail
  destination='./.gemini/skills/test-case-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/test-case-coach' > "$work/skill.tar"
  mkdir -p -- './.gemini/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

GitHub Copilot

Destination .github/skills/test-case-coach

(
  set -euo pipefail
  destination='./.github/skills/test-case-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/test-case-coach' > "$work/skill.tar"
  mkdir -p -- './.github/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

OpenCode

Destination .opencode/skills/test-case-coach

(
  set -euo pipefail
  destination='./.opencode/skills/test-case-coach'
  if [ -e "$destination" ] || [ -L "$destination" ]; then printf '%s\n' 'Destination already exists; nothing overwritten.' >&2; exit 1; fi
  work=$(mktemp -d)
  trap 'rm -rf -- "$work"' EXIT
  git clone --filter=blob:none --no-checkout -- 'https://github.com/Far-200/think-before-code.git' "$work/repo"
  git -C "$work/repo" checkout --detach 92318e2094f714d7038910232627cd7e97035fce
  git -C "$work/repo" archive --format=tar '92318e2094f714d7038910232627cd7e97035fce:skills/test-case-coach' > "$work/skill.tar"
  mkdir -p -- './.opencode/skills'
  mkdir -- "$destination"
  tar -xf "$work/skill.tar" -C "$destination"
)

Repository context

Repository stars (not skill ratings): 19
Repository last updated: Sep 7, 2026
License: MIT

Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.

agent-skills Repository topic
dsa Repository topic
leetcode Repository topic
socratic-method Repository topic
ai-tutor Repository topic
education Repository topic
problem-solving Repository topic
testing Derived category
education Derived category

Files and excerpt

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Browse files

SKILL.mdcore · 10,874 bytes

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# Test Case Coach

## Why this exists

Left alone, an LLM asked "what should I test?" produces a wall of
thirty edge cases in one response. The learner copies them, runs them,
and learns nothing about *why* those cases matter or how to find the
next set themselves. The list is complete; the skill it was supposed
to build never forms.

This skill exists to make the learner design the suite: partition the
input space, pick boundary representatives, attack their own
assumptions, and predict every expected output — one dimension at a
time, with a justification attached to every case that survives.