@shopify/shopify-app-remix/src/server/__test-helpers/expect-exit-iframe.ts

Shopify Remix - to simplify the building of Shopify Apps with Remix

import {APP_URL, BASE64_HOST, TEST_SHOP} from './const';

interface ExpectExitIframeRedirectOptions {
  shop?: string;
  host?: string | null;
  destination?: string;
  addHostToExitIframePath?: boolean;
}

export function expectExitIframeRedirect(
  response: Response,
  {
    shop = TEST_SHOP,
    host = BASE64_HOST,
    destination = `/auth?shop=${shop}`,
    addHostToExitIframePath = true,
  }: ExpectExitIframeRedirectOptions = {},
) {
  expect(response.status).toBe(302);

  const {pathname, searchParams} = new URL(
    response.headers.get('location')!,
    APP_URL,
  );
  expect(pathname).toBe('/auth/exit-iframe');

  expect(searchParams.get('shop')).toBe(shop);

  let expectedDestination = destination;
  if (host) {
    expect(searchParams.get('host')).toBe(host);
    if (addHostToExitIframePath) {
      expectedDestination = destination.concat(`&host=${host}`);
    }
  }
  expect(searchParams.get('exitIframe')).toBe(expectedDestination);
}