Running golang test on CircleCI is easy but if you need DIND (docker in docker) that is made by setup_remote_docker is all easy and you have something like this:
version: 2
jobs:
build:
docker:
- image: circleci/golang:1.13
environment:
TEST_RESULTS: /tmp/test-results
steps:
- checkout
- setup_remote_docker
- run: mkdir -p $TEST_RESULTS
- restore_cache:
keys:
- v1-pkg-cache
- run: go get gotest.tools/gotestsum
- run: docker pull appropriate/curl
- run: cd test && go mod download
- run:
name: Run unit tests
command: |
make test-unit
- run: cp tmp/unit-report.xml /tmp/test-results/unit-report.xml
- save_cache:
key: v1-pkg-cache
paths:
- "/go/pkg"
- store_artifacts:
path: /tmp/test-results
destination: raw-test-output
- store_test_results:
path: /tmp/test-results
But the issue is the network that is limit for security reasons and this helper will not work in DIND mode.
import http_helper "github.com/gruntwork-io/terratest/modules/http-helper"
// It can take a few seconds for the Docker container boot up, so retry a few times
maxRetries := 5
timeBetweenRetries := 2 * time.Second
url := fmt.Sprintf("http://localhost:%d", serverPort)
// Setup a TLS configuration to submit with the helper, a blank struct is acceptable
tlsConfig := tls.Config{}
// website::tag::5::Verify that we get back a 200 OK with the expected text
http_helper.HttpGetWithRetry(t, url, &tlsConfig, 200, expectedServerText, maxRetries, timeBetweenRetries)
you need to replace http_helper with docker container with curl:
opts := &docker.RunOptions{
Command: []string{"--retry", "5", "--retry-connrefused", "-s", "http://production_nginx:80/hello"},
OtherOptions: []string{"--network", "testdockercomposelocal_teststack-network"},
}
tag = "appropriate/curl"
output := docker.Run(t, tag, opts)
assert.Equal(t, expectedServerText, output)
The important thing is to have the same network with docker-compose that I’m using in the application and this container with curl with correct network parameter. Curl have advantage for support an exponential backoff algorithm.