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Set the event handlers in the integration tests before any event is triggered

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The function evaluateOnNewDocument in Puppeteer allow us to execute some js before the pdf.js one
is loaded.
It allows us to stub some setters before there are used and then set some event handlers very soon.
This commit is contained in:
Calixte Denizet 2024-08-16 18:06:53 +01:00
parent d8d9cff715
commit 5e4948062c
4 changed files with 81 additions and 70 deletions
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50
test/integration/test_utils.mjs
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@ -14,9 +14,10 @@
*/
import os from "os";
const isMac = os.platform() === "darwin";
function loadAndWait(filename, selector, zoom, pageSetup, options) {
function loadAndWait(filename, selector, zoom, setups, options) {
return Promise.all(
global.integrationSessions.map(async session => {
const page = await session.browser.newPage();
@ -52,11 +53,52 @@ function loadAndWait(filename, selector, zoom, pageSetup, options) {
global.integrationBaseUrl
}?file=/test/pdfs/${filename}#zoom=${zoom ?? "page-fit"}${app_options}`;
await page.goto(url);
if (pageSetup) {
await pageSetup(page);
if (setups) {
// page.evaluateOnNewDocument allows us to run code before the
// first js script is executed.
// The idea here is to set up some setters for PDFViewerApplication
// and EventBus, so we can inject some code to do whatever we want
// soon enough especially before the first event in the eventBus is
// dispatched.
const { prePageSetup, appSetup, eventBusSetup } = setups;
await prePageSetup?.(page);
if (appSetup || eventBusSetup) {
await page.evaluateOnNewDocument(
(aSetup, eSetup) => {
let app;
let eventBus;
Object.defineProperty(window, "PDFViewerApplication", {
get() {
return app;
},
set(newValue) {
app = newValue;
if (aSetup) {
// eslint-disable-next-line no-eval
eval(`(${aSetup})`)(app);
}
Object.defineProperty(app, "eventBus", {
get() {
return eventBus;
},
set(newV) {
eventBus = newV;
// eslint-disable-next-line no-eval
eval(`(${eSetup})`)(eventBus);
},
});
},
});
},
appSetup?.toString(),
eventBusSetup?.toString()
);
}
}
await page.goto(url);
await setups?.postPageSetup?.(page);
await page.bringToFront();
if (selector) {
await page.waitForSelector(selector, {