Documentation Grafana k6 JavaScript API jslib testing Non-Retrying Assertions toBe()

toBe()

The toBe() method asserts that the actual value is exactly equal to the expected value using Object.is() comparison.

Syntax

JavaScript Copy

expect(actual).toBe(expected);
expect(actual).not.toBe(expected);

Parameters

Returns

Description

The toBe() method performs exact equality comparison using Object.is(). This means it checks for strict equality and handles special cases like NaN and -0 correctly.

Use toBe() when you want to assert that two values are the same reference or primitive value. For object comparison, use toEqual() instead.

Usage

JavaScript Copy

import { expect } from 'https://jslib.k6.io/k6-testing/0.5.0/index.js';

export default function () {
  expect(42).toBe(42);
  expect('hello').toBe('hello');
  expect(true).toBe(true);
  expect(null).toBe(null);
  expect(undefined).toBe(undefined);
}