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

toBeTruthy()

The toBeTruthy() method asserts that a value is truthy in JavaScript. A value is truthy if it converts to true when evaluated in a boolean context.

Syntax

JavaScript Copy

expect(actual).toBeTruthy();
expect(actual).not.toBeTruthy();

Returns

Description

The toBeTruthy() method checks if a value is truthy. In JavaScript, all values are truthy except for the following falsy values:

• false
• 0
• -0
• 0n (BigInt)
• "" (empty string)
• null
• undefined
• NaN

Usage

JavaScript Copy

import { expect } from 'https://jslib.k6.io/k6-testing/0.6.1/index.js';

export default function () {
  expect(true).toBeTruthy();
  expect(1).toBeTruthy();
  expect(-1).toBeTruthy();
  expect('hello').toBeTruthy();
  expect(' ').toBeTruthy(); // Non-empty string
  expect(42).toBeTruthy();
  expect(3.14).toBeTruthy();
  expect(Infinity).toBeTruthy();
  expect(-Infinity).toBeTruthy();
}