next-page-tester/dist/testHelpers.js

Enable DOM integration testing on Next.js pages

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.cleanup = exports.initTestHelpers = void 0;
const makeRenderMethods_1 = require("./makeRenderMethods");
const setEnvVars_1 = require("./setEnvVars");
const utils_1 = require("./utils");
function isJSDOMEnvironment() {
    return navigator && navigator.userAgent.includes('jsdom');
}
class IntersectionObserver {
    observe() { }
    unobserve() { }
    disconnect() { }
}
function initTestHelpers() {
    if (isJSDOMEnvironment()) {
        // Mock IntersectionObserver (Link component relies on it)
        if (!global.IntersectionObserver) {
            //@ts-expect-error missing DOM types
            global.IntersectionObserver = IntersectionObserver;
        }
        // Mock window.scrollTo (Link component triggers it)
        global.scrollTo = () => { };
    }
    if (typeof document !== 'undefined' && typeof afterEach === 'function') {
        afterEach(cleanup);
        // Disable testing library auto cleanup
        // https://testing-library.com/docs/react-testing-library/setup/#skipping-auto-cleanup
        process.env.RTL_SKIP_AUTO_CLEANUP = 'true';
    }
    // We are intentionally only targeting jest here for it to work with jest.isolatedModules
    // If user has a different test runner we handle it in src/utils where we fallback to stealthy-require
    if (typeof jest !== 'undefined') {
        (0, utils_1.preservePredefinedSharedModulesIdentity)();
        // Enable a Next.js workaround to avoid mixed commonJs/Es Module imports that Jes can't handle
        // @LINK: https://github.com/vercel/next.js/blob/v12.1.0/packages/next/server/config.ts#L639
        beforeEach(() => {
            process.env.__NEXT_TEST_MODE = 'jest';
        });
    }
}
exports.initTestHelpers = initTestHelpers;
function cleanup() {
    (0, makeRenderMethods_1.cleanupDOM)();
    (0, setEnvVars_1.cleanupEnvVars)();
}
exports.cleanup = cleanup;