Passing command line arguments to nightwatch.runner - nightwatch.js

Question

I have a test setup that accepts dynamic values for predefined options (e.g: --foo="bar", --foo="car", etc) which works perfectly when run from the command line.
This works:
./node_modules/nightwatch/bin/nightwatch ./tests/test.js --env "production" --foo="bar"
However, I want to call the test from inside a node app, but can't quite seem to get the extra parameters passed into my test. My test initializes correctly, but then fails because I can't get any of the extra params.
try {
const nightwatch = require('nightwatch');
const argv = {
config: 'nightwatch.json',
test: 'test.js',
env: 'default',
foo: 'bar',
};
const done = function() {
console.log('nightwatch complete');
}; // your callback function
const settings = {};
nightwatch.runner(argv, done, settings);
} catch (error) {
console.log('Exception:' + error.message);
}
There seems to be absolutely no documentation for nightwatch.runner or nightwatch.cli so any help you can provide would be greatly appreciated.

Answer 1

It took a lot of poking around to see what gets set where, but finally I tried playing with the settings object and realized that I could override the globals param like so:
var settings = {
globals: {
foo: 'one',
bar: 'two'
}
};
This probably isn't the intended functionality of the settings object here, but it worked for me.
try {
const nightwatch = require('nightwatch');
const argv = {
config: 'nightwatch.json',
test: 'test.js',
env: 'default',
foo: 'bar',
};
const done = function() {
console.log('nightwatch complete');
}; // your callback function
var settings = {
globals: {
foo: 'one',
bar: 'two'
}
};
nightwatch.runner(argv, done, settings);
} catch (error) {
console.log('Exception:' + error.message);
}
If anyone who comes across this is interested, I posted a very simple version on github.