tests: Clean up and consistify naming scheme

Change-type: patch
Signed-off-by: Cameron Diver <cameron@balena.io>

test/00-init.spec.ts

@@ -0,0 +1,63 @@
+process.env.ROOT_MOUNTPOINT = './test/data';
+process.env.BOOT_MOUNTPOINT = '/mnt/boot';
+process.env.CONFIG_JSON_PATH = '/config.json';
+process.env.DATABASE_PATH = './test/data/database.sqlite';
+process.env.DATABASE_PATH_2 = './test/data/database2.sqlite';
+process.env.DATABASE_PATH_3 = './test/data/database3.sqlite';
+process.env.LED_FILE = './test/data/led_file';
+
+import * as dbus from 'dbus';
+import { DBusError, DBusInterface } from 'dbus';
+import { stub } from 'sinon';
+import * as fs from 'fs';
+
+// Make sure they are no database files left over from
+// previous runs
+try {
+	fs.unlinkSync(process.env.DATABASE_PATH);
+} catch {
+	/* noop */
+}
+try {
+	fs.unlinkSync(process.env.DATABASE_PATH_2);
+} catch {
+	/* noop */
+}
+try {
+	fs.unlinkSync(process.env.DATABASE_PATH_3);
+} catch {
+	/* noop */
+}
+fs.writeFileSync(
+	'./test/data/config.json',
+	fs.readFileSync('./test/data/testconfig.json'),
+);
+
+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);
+
+import './lib/mocked-dockerode';
+import './lib/mocked-iptables';
+import './lib/mocked-event-tracker';