CODEWITHSUNDEEP
javascriptjasminejasmine-node
Ron Harlev
Ron Harlev

Reputation: 16673

Jasmine. loop over beforeEach and it

I would like to run a loop over an array with a set of tests including beforeEach setting up corresponding value, and it also using the values from the array.

The example below shows the general structure. The problem is myArray is not recognized when calling forEach on it (see the line with comment)

let myArray;
beforeAll(() => {
  myArray = getArray();
  log(myArray) // I can see its defined here
});
myArray.forEach((myValue) => { // myArray has no value here!!!
 beforeEach(function() {
  // do something with myValue
  log(myArray) // I can see its defined here
 });

 it('my test', () => {
   // do something with myValue
   log(myArray) // I can see its defined here
 });

}); // close loop

There are examples like this to loop over it, but that doesn't address the scope of the values being looped over

Upvotes: 1

Views: 2772

Answers (2)

Andrei Surzhan
Andrei Surzhan

Reputation: 151

You don't need to use beforeAll to get data for your array. You could get data for tests in advance before you define test suite.

let myArray = [1, 2, 3]; //get data for tests

describe('Name of the group', () => {

    myArray.forEach(element => {
        beforeEach(() => {
            console.log('Data set before each: ' + myArray)
        });

        it('My Test', () => {
            console.log('Test#' + element)
        });
    });
});

Possible to use data driven approach using jasmine-data-provider

const using = require('jasmine-data-provider');

let myArray = [1, 2, 3]; //get data for tests

describe('Name of the group using "using"', () => {       
    using(myArray, element => {
        beforeEach(() => {
            console.log('Data set before each: ' + myArray)
        });

        it('My Test', () => {
            console.log('Test#' + element)
        });
    });
});

Upvotes: 1

terry.qiao
terry.qiao

Reputation: 2045

You should wrap your myArray.forEach in one of the beforeEach, it, afterEach, or afterAll, as beforeAll is running asynchronously.

Upvotes: 0

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