element-web/cypress/plugins/webserver.ts
Travis Ralston 4171c008a4
Convert sticker end-to-end tests to Cypress (#8807)
* Convert sticker end-to-end tests to Cypress

Reference materials:
* https://www.cypress.io/blog/2020/02/12/working-with-iframes-in-cypress/
* https://github.com/cypress-io/cypress/issues/136
* https://docs.cypress.io/api/commands/origin#Other-limitations

Ideally we'd be able to use `cy.origin()` to jump into the iframe, but it's explicitly not supported. Instead we disable web security as instructed by cypress because it's our only reasonable option here. Thankfully, disabling web security doesn't appear to remove the crypto libraries from the browser so we can still function in that respect.

Rationale for why we can't just serve the sticker picker off the app domain is included in the code.

* Appease the linter

* More linter appeasement
2022-06-10 09:24:15 -06:00

52 lines
1.5 KiB
TypeScript

/*
Copyright 2022 The Matrix.org Foundation C.I.C.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/// <reference types="cypress" />
import * as http from "http";
import { AddressInfo } from "net";
import PluginEvents = Cypress.PluginEvents;
import PluginConfigOptions = Cypress.PluginConfigOptions;
const servers: http.Server[] = [];
function serveHtmlFile(html: string): string {
const server = http.createServer((req, res) => {
res.writeHead(200, {
"Content-Type": "text/html",
});
res.end(html);
});
server.listen();
servers.push(server);
return `http://localhost:${(server.address() as AddressInfo).port}/`;
}
function stopWebServers(): null {
for (const server of servers) {
server.close();
}
servers.splice(0, servers.length); // clear
return null; // tell cypress we did the task successfully (doesn't allow undefined)
}
export function webserver(on: PluginEvents, config: PluginConfigOptions) {
on("task", { serveHtmlFile, stopWebServers });
on("after:run", stopWebServers);
}