Pass data between beforeEach, afterEach and it in mocha tests.

test.js

var expect = require('expect');

describe.only('Sample', function () {

  beforeEach(function () {
    this.currentTest.value = 'Winning!';
  });

  it('Uses current test data', function () {
    expect(this.test.value).to.equal('Winning!');
    this.test.value = 'Win Later';
  });

  afterEach(function () {
    expect(this.currentTest.value).to.equal('Win Later');
  });

});

Thanks Buddy!

Following your shared example I did write some basic code

describe('User Authentication', () => {

    before(async () => {
        let oObj = await admin.newAdmin();
        this.username = oObj.login; 
        this.password = oObj.password;
    });

    it('If the credentials exists in the system it should return the token generated against it.', (done) => {
        chai.request(server)
        .post("/application/login")
        .set("Content-Type", "application/x-www-form-urlencoded")
        .send({username: this.username,password:this.password})
        .end((err, res) => {
            this.token = res.body;
            res.should.have.status(200);
            res.body.should.be.a("string");
            done();
        });
    });


    it('Get All Books.', (done) => {
        chai.request(server)
        .get("/books/")
        .set("Content-Type", "application/json")
        .set("access_token", this.token)
        .end((err, res) => {
            console.log(res.body);
            res.should.have.status(200);
            res.should.be.an("object");
            res.should.have.property('body').should.be.an('object')
            // res.body.should.be.an('object')
            res.body.should.have.property('results')
            res.body.results.should.be.an('array').to.not.equal(0)
            // res.body.results.should.to.not.equal(0)
            res.body.should.have.property('total').not.equal(0)
            // res.body.total.should.not.equal(0)
            
            done();
        });
    });

});

Hi, the this object only works inside a function, not outside, that's why you should use function instead of arrow in the describe or it.

Hello,
if i want to display the value of the current test in the description of it
for exemple:
it('Uses current test data "' + this.test.value + '"', function () { expect(this.test.value).to.equal('Winning!'); this.test.value = 'Win Later'; });
i get always this.test.value = 'undefined'
Is there any solution to use a variable outside of it ?
Also the same if i define a global variable it's always undefined.