This is documentation for the next version of Grafana k6 documentation. For the latest stable release, go to the latest version.

Documentation

Grafana k6

JavaScript API

jslib

k6chaijs

describe( name, function )

Open source

describe( name, function )

describe is a wrapper of group that adds the ability to:

Catch exceptions to allow continuing the execution outside of the describe function.
Returns a boolean to indicate the success of all its k6chaijs assertions.

import { describe, expect } from 'https://jslib.k6.io/k6chaijs/4.3.4.3/index.js';

export default function testSuite() {
  const success1 = describe('Basic test', () => {
    expect(1, 'number one').to.equal(1);
  });
  console.log(success1); // true

  const success2 = describe('Another test', () => {
    throw 'Something entirely unexpected happened';
  });
  console.log(success2); // false

  const success3 = describe('Yet another test', () => {
    expect(false, 'my vaule').to.be.true();
  });
  console.log(success3); // false
}

default ✓ [======================================] 1 VUs  00m00.0s/10m0s  1/1 iters, 1 per VU

     █ Basic test
       ✓ expected number one to equal 1

     █ Another test
       ✗ Exception raised "Something entirely unexpected happened"
        ↳  0% — ✓ 0 / ✗ 1

     █ Yet another test
       ✗ expected my vaule to be true
        ↳  0% — ✓ 0 / ✗ 1

API

Parameter	Type	Description
name	string	Test case name. The test case name should be unique. Otherwise, the test case will be grouped.
function	function	The test case function to be executed

Returns

Type	Description
bool	Returns true when all `expect` conditions within the `describe()` body were successful, and no unhandled exceptions were raised, otherwise false.

Chaining describe() blocks

If you want to skip the execution of the following describe blocks, consider chaining them using && as shown below.

import { describe, expect } from 'https://jslib.k6.io/k6chaijs/4.3.4.3/index.js';

export default function testSuite() {
  describe('Basic test', () => {
    expect(1, 'number one').to.equal(1);
  }) &&
    describe('Another test', () => {
      throw 'Something entirely unexpected happened';
    }) &&
    describe('Yet another test', () => {
      // the will not be executed because the prior block returned `false`
      expect(false, 'my vaule').to.be.true();
    });
}