How to mock a model using sinon.js?

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Slim

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Sep 27, 2017, 6:32:11 AM9/27/17

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Hi,

I have a user model:

const Model = require('objection').Model;

class User extends Model {
  static get tableName() {
    return 'user';
  }

  static get jsonSchema() {
    return {
      type: 'object',
      required: ['name', 'address'],

      properties: {
        id: { type: 'integer' },
        name: { type: 'string', minLength: 1, maxLength: 255 },
        address: { type: 'string', minLength: 1, maxLength: 255 },
      },
    };
  }
}

module.exports = User;

And I want to make some unit test such as verify the insertion of a new user of read a user from a database.

User.test.js:

const sinon = require('sinon');
const user = require('../../../server/models/user');

describe('Test the model user', () => {
  const userMock = sinon.mock(user);
  test('It should returns a user ', () => {
    const userExpected = {
      name: 'Provider 1 ',
      address: 'Address 1'
    };
    userMock.expects('query').once().withArgs().returns(userExpected);
    user.query();
    userMock.restore();
    userMock.verify();
  });
});