const { test } = require('node:test'), assert = require('node:assert/strict'); const { transcript } = require('./car-mode');
test('voice search submits only final results from the result index', () => { const interim = [{transcript:'wrong'}]; interim.isFinal = false; const final = [{transcript:'Amazing Grace'}]; final.isFinal = true; assert.equal(transcript({results:[interim, final]}), 'Amazing Grace'); assert.equal(transcript({resultIndex:2,results:[final,final]}), ''); assert.equal(transcript({}), ''); });

test('lazy Car mode keeps four independent transport buttons and the voice entry in place', () => {
  const vm=require('node:vm'),fs=require('node:fs');
  class Element {
    constructor(tag){this.tag=tag;this.children=[];this.inert=false;}
    append(...nodes){for(const node of nodes){node.remove();node.parent=this;this.children.push(node);}}
    remove(){if(this.parent){this.parent.children=this.parent.children.filter(n=>n!==this);this.parent=null;}}
    after(node){this.parent.append(node);}
    setAttribute(name,value){this[name]=value;}
    focus(){}
    get isConnected(){return !!this.parent;}
  }
  const body=new Element('body'),input=new Element('input'),form=new Element('form'),voice=new Element('button');form.id='searchForm';voice.id='voiceSearchBtn';body.append(form,input,voice);
  const all=node=>[node,...node.children.flatMap(all)],doc={body,documentElement:{lang:'en'},createElement:tag=>new Element(tag),getElementById:id=>all(body).find(n=>n.id===id)};
  let section;const actions=[],root={document:doc,navigator:{},SpeechRecognition:function(){},SettingsSections:{register:s=>section=s}};
  vm.runInNewContext(fs.readFileSync(__dirname+'/car-mode.js','utf8'),{window:root,setInterval:()=>1,clearInterval:()=>{}});
  root.CarMode.configure({input,action:action=>actions.push(action),state:()=>({paused:true,title:'Song'})});
  root.CarMode.open();const overlay=body.children.find(n=>n.className==='car-mode'),controls=overlay.children.find(n=>n.className==='car-controls');
  assert.equal(controls.children.length,4);assert.equal(new Set(controls.children).size,4);assert.equal(voice.parent,body);
  controls.children.forEach(b=>b.onclick());assert.deepEqual(actions,['prev','toggle','back','next']);
  root.CarMode.close();assert.equal(voice.parent,body);assert.equal(body.inert,false);
  const panel=new Element('section');body.append(panel);section.render(panel);
  assert.equal(voice.parent,body,'settings must not steal the voice entry');assert.equal(panel.children.at(-1).textContent,'Enter Car mode');
});