Moodle Behat: Accessing host chromedriver from docker

24th May 2024 ElearningWorld Admin

From time to time, you may want Behat tests on your docker container to connect to chromedriver on your host so that you can easily debug a failing Behat test.

To do this, it is important that chromedriver is started as follows:

chromedriver –whitelisted-ips= –allowed-origins=host.docker.internal

Your Moodle Behat config will then need to reference your host. This is done by setting ‘wd_host’ to ‘host.docker.internal:9515’

$CFG->behat_profiles = [
‘default’ => [
‘browser’ => ‘chrome’,
‘tags’ => ‘@javascript’,
‘wd_host’ => ‘host.docker.internal:9515’
],
‘headless’ => [
‘browser’ => ‘chrome’,
‘wd_host’ => ‘host.docker.internal:9515’,
‘tags’ => ‘@javascript’,
‘capabilities’ => [
‘chrome’ => [
‘switches’ => [
‘–no-sandbox’,
‘–headless’,
‘–disable-gpu’
]
],
‘extra_capabilities’ => [
‘chromeOptions’ => [
‘args’ => [
‘headless’,
‘no-gpu’
]
]
]
]
]
];