build(deps): bump go.k6.io/k6 from 0.56.0 to 0.57.0 in the k6 group

[dependabot]

Bumps the k6 group with 1 update: go.k6.io/k6.

Updates go.k6.io/k6 from 0.56.0 to 0.57.0

Release notes

Sourced from go.k6.io/k6's releases.

v0.57.0

k6 v0.57.0 is here 🎉! This release includes:

• Introducing helpers for functional testing.
• The k6 new command now supports templates and ProjectIDs.
• The k6/experimental/csv module gets a new asObjects option.
• We no longer support the k6/experimental/browser module, in favor of k6/browser.
• Moving most of non-public APIs to the internal package.

Breaking changes

• #4161 Drops k6/experimental/browser. If you're still using it, follow the instructions to move to the graduated and stable k6/browser module.
• #4133 Moves all not publicly used APIs in internal package. This was based on the publicly available extensions for k6 and may break private ones. More APIs will likely be removed or updated in follow-up releases after this more mechanical change.
• #4292 TypeScript is automatically supported and recognized if the script files use the .ts extension. It also deprecates experimental_enhanced compatibility mode as it is no longer necessary.

New features

New functional testing focused official jslib k6-testing

The k6 team has been developing a new official jslib dedicated to functional testing. While it is still under active development and will potentially see breaking changes, the set of APIs and behaviors it offers are meant to make their way into k6 eventually, and it is now available for early feedback.

k6-testing is a k6 JavaScript library that offers a seamless way to write functional tests in k6, using a Playwright-compatible assertions API. It exposes an expect function, with which assertions can be performed using specific matchers that reflect the expected results. Unlike current k6's check when expects assertions fail, the test will immediately fail with a clear error message, including the expected and actual values in a similar fashion to what users would observe when using Playwright assertions.

There are many generic matchers (and more to come), such as toEqual, toBe, or toBeTruthy, to only name a few, that can be used to assert conditions during a k6 test.

import { expect } from 'https://jslib.k6.io/k6-testing/0.2.0/index.js';
export default function () {
const response = http.get('https://test.k6.io');
expect(response.status).toEqual(200);
expect(response.body).toBeTruthy();
expect(response.json()).toEqual(JSON.stringify({ message: 'Hello, world!' }));
}

k6-jslib-testing also includes browser-specific async matchers that wait until the expected condition is met such as toBeVisible, toBeDisabled, or toBeChecked, to name a few.

import { expect } from "https://jslib.k6.io/k6-testing/0.2.0/index.js";
import { browser } from "k6/browser";
export const options = {
scenarios: {
ui: {
executor: "shared-iterations",
options: {
browser: {
type: "chromium",
</tr></table>

... (truncated)

Commits

• 50afd82 Release v0.57.0 (#4511)
• 0544261 Bump k6 version
• cc85112 Add TODO to Frame.SetContent (#4538)
• 9f07315 browser: race fix in page.setInputFiles
• 5d670c5 browser: race fix in page.SetViewportSize
• 0d53600 browser: race fix in page.selectOptions and co
• a51dd7e Drop not true TODO comments
• 24d9c7d browser: race fix in page.screenshot
• 355f0de browser: race fix in page/frame.Check
• f7fa5af Fix setContent racy access to options
• Additional commits viewable in compare view

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