toLowerCase the dash buttons mac address

Author: steffenmllr

src/DashButton.js

@@ -38,7 +38,7 @@ export default class DashButton {
   _isResponding: boolean;
 
   constructor(macAddress: string, options: DashButtonOptions = {}) {
-    this._macAddress = macAddress;
+    this._macAddress = macAddress.toLowerCase();
     this._networkInterface = options.networkInterface || nullthrows(NetworkInterfaces.getDefault());
     this._packetListener = this._handlePacket.bind(this);
     this._dashListeners = new Set();

src/__tests__/DashButton-test.js

@@ -23,6 +23,12 @@ describe('DashButton', () => {
     jest.resetModules();
   });
 
+  it(`should normalize (lowercase) the dash buttons MAC address`, () => {
+    let button = new DashButton('00:11:AA:33:44:BB');
+
+    expect(button._macAddress).toEqual('00:11:aa:33:44:bb');
+  });
+
   it(`creates a pcap session the first time a listener is added`, () => {
     let button = new DashButton(MAC_ADDRESS);
     button.addListener(() => {});