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'use strict';
const assert = require('assert');const mongoose = require('../../');const start = require('../common');
describe('Advanced Schemas', function() {  let db;  const Schema = mongoose.Schema;
  before(function() {    db = mongoose.createConnection(start.uri);  });
  after(async function() {    await db.close();  });
  /**   * Mongoose allows creating schemas from [ES6 classes](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes).   * The `loadClass()` function lets you pull in methods,   * statics, and virtuals from an ES6 class. A class method maps to a schema   * method, a static method maps to a schema static, and getters/setters map   * to virtuals.   */  it('Creating from ES6 Classes Using `loadClass()`', async function() {    const schema = new Schema({ firstName: String, lastName: String });
    class HumanClass {      get fullName() {        return 'My name';      }    }
    class PersonClass extends HumanClass {      // `fullName` becomes a virtual      get fullName() {        return `${super.fullName} is ${this.firstName} ${this.lastName}`;      }
      set fullName(v) {        const firstSpace = v.indexOf(' ');        this.firstName = v.split(' ')[0];        this.lastName = firstSpace === -1 ? '' : v.substring(firstSpace + 1);      }
      // `getFullName()` becomes a document method      getFullName() {        return `${this.firstName} ${this.lastName}`;      }
      // `findByFullName()` becomes a static      static findByFullName(name) {        const firstSpace = name.indexOf(' ');        const firstName = name.split(' ')[0];        const lastName = firstSpace === -1 ? '' : name.substring(firstSpace + 1);        return this.findOne({ firstName, lastName });      }    }
    schema.loadClass(PersonClass);    const Person = db.model('Person', schema);        const doc = await Person.create({      firstName: 'Jon',      lastName: 'Snow'    });
    assert.equal(doc.fullName, 'My name is Jon Snow');    doc.fullName = 'Jon Stark';    assert.equal(doc.firstName, 'Jon');    assert.equal(doc.lastName, 'Stark');    const foundPerson = await Person.findByFullName('Jon Snow');        assert.equal(foundPerson.fullName, 'My name is Jon Snow');  });});