I have been experimenting with running tests in parallel using nightwatchjs within Docker using Selenium Hub. Initially, I managed to run the tests in parallel in Docker without Selenium Hub, but encountered issues with child processes timing out and requiring multiple retries. This inconsistency in results led me to consider using Selenium Hub or a similar solution to eliminate timeouts and retries, ensuring more stable and consistent test results.
However, when I attempt to execute
docker-compose run --rm nightwatchError retrieving a new session from the selenium server. Connection refused! Is selenium server started?nightwatch.conf.js
module.exports = {
src_folders: ['tests'],
output_folder: 'reports',
custom_commands_path: '',
custom_assertions_path: '',
page_objects_path: 'page_objects',
test_workers: true,
live_output: true,
detailed_output: true,
selenium: {
start_process: true,
server_path: './bin/selenium-server-standalone-3.0.1.jar',
log_path: '',
host: '127.0.0.1',
port: 4444,
cli_args: {
'webdriver.chrome.driver' : './node_modules/chromedriver/bin/chromedriver'
}
},
test_settings: {
default: {
launch_url: 'https://example.com',
selenium_port: 4444,
selenium_host: 'hub',
silent: true,
screenshots: {
'enabled': false,
'path': ''
},
desiredCapabilities: {
browserName: 'chrome',
javascriptEnabled: true,
acceptSslCerts: true,
chromeOptions: {
args: [
'--window-size=1024,768',
'--no-sandbox'
]
}
},
globals: {
waitForConditionTimeout: 20000,
asyncHookTimeout: 70000
}
}
};
docker-compose.yml
version: '2'
services:
nightwatch:
build:
context: .
command: /bin/sh -c "node ./node_modules/nightwatch/bin/nightwatch"
links:
- chrome
- hub
volumes:
- .:/opt/nightwatch
chrome:
environment:
VIRTUAL_HOST: node.chrome.docker
HUB_PORT_4444_TCP_ADDR: hub
HUB_PORT_4444_TCP_PORT: 4444
image: selenium/node-chrome:3.1.0-astatine
links:
- hub
hub:
ports:
- 4444:4444
image: selenium/hub:3.1.0-astatine
Dockerfile
FROM java:8-jre
## Node.js setup
RUN curl -sL https://deb.nodesource.com/setup_6.x | bash -
RUN apt-get install -y nodejs
RUN npm config set spin false
WORKDIR /app
COPY . ./
RUN npm install