balena-supervisor/test/lib/mocked-dbus.ts

import * as dbus from 'dbus';
import { DBusError, DBusInterface } from 'dbus';
import { stub } from 'sinon';

stub(dbus, 'getBus').returns({
	getInterface: (
		_serviceName: string,
		_objectPath: string,
		_interfaceName: string,
		interfaceCb: (err: null | DBusError, iface: DBusInterface) => void,
	) => {
		interfaceCb(null, {
			Get: (
				_unitName: string,
				_property: string,
				getCb: (err: null | Error, value: unknown) => void,
			) => {
				getCb(null, 'this is the value');
			},
			GetUnit: (
				_unitName: string,
				getUnitCb: (err: null | Error, unitPath: string) => void,
			) => {
				getUnitCb(null, 'this is the unit path');
			},
		} as any);
	},
} as any);