Mocha test "0 passing"

I`m trying to write some tests for my react app.

I get this in console, when the tests are right.

0 passing (0ms)

Test file appTest.test.js

var expect = require('chai').expect
    , foo = 'bar'
    , beverages = { tea: [ 'chai', 'matcha', 'oolong' ] };

expect(foo).to.be.a('string');
expect(foo).to.equal('bar');
expect(foo).to.have.lengthOf(3);
expect(beverages).to.have.property('tea').with.lengthOf(3);

package.json

"test": "NODE_ENV=test mocha --require @babel/register --require ./test/*.test.js   --watch",

Directory

What is interesting, that if I put the wrong expectation it fails so it receives the file