parallelenv

go linter that check whether environment variables are set in tests run in parallel

Motivation

Calls to t.Parallel() and t.Setenv() in the test function will cause a panic, as environment variables cannot be set in tests that run in parallel.

We created this tool in the hope that it would be noticed by static analysis before the tests are run.

installation

go install github.com/sho-hata/parallelenv/cmd/parallelenv@latest

Usage

test file Example

package main

import (
	"testing"
)

func TestMain(t *testing.T) {
  t.Parallel()
  t.Setenv("LANGUAGE", "Go")
}

Analysis

$ parallelenv ./...

./main_test.go:7:2: cannot set environment variables in parallel tests
./main_test.go:8:2: cannot set environment variables in parallel tests

CI

CircleCI

- run:
    name: install parallelenv
    command: go install github.com/sho-hata/parallelenv/cmd/parallelenv@latest

- run:
    name: run parallelenv
    command: parallelenv ./...

GitHub Actions

- name: install parallelenv
  run: go install github.com/sho-hata/parallelenv/cmd/parallelenv@latest

- name: run parallelenv
  run: parallelenv ./...