Do not do nil pointer dereference on MySQL init error. #870

	name: Tests

	on: [push, pull_request]

	jobs:
	test:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-go@v2
	with:
	stable: "false"
	go-version: "1.18"
	- name: Run Linters
	run: ./run_lint.sh
	- name: Run Tests
	run: CI=true ./run_tests.sh
	contest-generator:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	with:
	# clone in the gopath
	path: src/github.com/${{ github.repository }}
	- uses: actions/setup-go@v2
	with:
	stable: "false"
	go-version: "1.18"
	- name: set up environment variables
	run: \|
	# must do this here because `env` doesn't allow variable expansion
	echo "GOPATH=$GITHUB_WORKSPACE" >> $GITHUB_ENV
	echo "GOBIN=$GITHUB_WORKSPACE/bin" >> $GITHUB_ENV
	- name: Validate contest-generator
	run: \|
	set -exu
	cd "${GITHUB_WORKSPACE}"/src/github.com/${{ github.repository }}/cmds/contest-generator
	go build
	builddir=$(./contest-generator --from core-plugins.yml) # generate the code and get the output directory
	cd "${builddir}"
	ls -l
	go mod init contest
	go mod edit -replace "github.com/${{ github.repository}}=${GITHUB_WORKSPACE}/src/github.com/${{ github.repository}}" # ensure we are building against the code from this commit
	go mod tidy
	go build # build the generated main.go
	gofmt -w "${builddir}/contest.go" # ensure that the code respects Go's format guidelines
	diff -Naur "${builddir}/contest.go" "${GITHUB_WORKSPACE}"/src/github.com/${{ github.repository }}/cmds/contest/main.go # show the differences between the newly generated code and the existing one

Provide feedback