テストコードで、expected が実際より真に短い場合でもテストが通ってしまうバグを修正 #7

	name: CI

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	on:
	pull_request:
	push:
	branches:
	- main
	workflow_dispatch:

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: checkout
	uses: actions/checkout@v4

	- name: lean action
	uses: leanprover/lean-action@v1-beta
	with:
	build-args: "--quiet"
	test: false

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