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Link the user-bot welcome DM to the MFA setup wizard #3

	name: Test user-bot Lambda

	# Runs only when the Lambda's code or this workflow changes. Terraform changes go
	# through terraform-plan.yaml instead; nothing under lambda/ is a .tf file.
	on:
	pull_request:
	branches:
	- main
	paths:
	- 'lambda/user-bot/**'
	- '.github/workflows/user-bot-test.yml'

	# No AWS credentials: the tests mock every AWS and Slack call.
	permissions:
	contents: read

	jobs:
	test:
	name: Typecheck, test and build
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: lambda/user-bot

	steps:
	- name: Checkout code
	uses: actions/checkout@v5

	# Same Node major as the Lambda runtime in terraform/user-bot.tf.
	- name: Set up Node
	uses: actions/setup-node@v7
	with:
	node-version-file: lambda/user-bot/.nvmrc
	cache: npm
	cache-dependency-path: lambda/user-bot/package-lock.json

	- name: Install dependencies
	run: npm ci

	- name: Typecheck
	run: npm run typecheck

	- name: Unit tests
	run: npm test

	# Proves the bundle that user-bot-deploy.yml ships still builds.
	- name: Build
	run: npm run build