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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /devtools/client/performance-new/test/browser/fake-frontend.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'devtools/client/performance-new/test/browser/fake-frontend.html')
| -rw-r--r-- | devtools/client/performance-new/test/browser/fake-frontend.html | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/devtools/client/performance-new/test/browser/fake-frontend.html b/devtools/client/performance-new/test/browser/fake-frontend.html new file mode 100644 index 0000000000..6742457113 --- /dev/null +++ b/devtools/client/performance-new/test/browser/fake-frontend.html @@ -0,0 +1,126 @@ +<!DOCTYPE html> +<!-- This Source Code Form is subject to the terms of the Mozilla Public + - License, v. 2.0. If a copy of the MPL was not distributed with this + - file, You can obtain one at http://mozilla.org/MPL/2.0/. --> +<html> + <head> + <meta charset="utf-8"/> + <title></title> + </head> + <body> + <script> + "use strict"; + // This file is used to test the injection of performance profiles into a front-end, + // specifically the mechanism used to inject into profiler.firefox.com. Rather + // than using some kind of complicated message passing scheme to talk to the test + // harness, modify the title of the page. The tests can easily read the window + // title to see if things worked as expected. + + // The following are the titles used to communicate the page's state to the tests. + // Keep these in sync with any tests that read them. + const initialTitle = "Waiting on the profile"; + const successTitle = "Profile received"; + const errorTitle = "Error" + + document.title = initialTitle; + + // A function which requests the profile from the browser using the GET_PROFILE + // WebChannel message. + function getProfile() { + return new Promise((resolve, reject) => { + const requestId = 0; + + function listener(event) { + window.removeEventListener( + "WebChannelMessageToContent", + listener, + true + ); + + const { id, message } = event.detail; + + if (id !== "profiler.firefox.com" || + !message || + typeof message !== "object" + ) { + console.error(message); + reject(new Error("A malformed WebChannel event was received.")); + return; + } + + if (!message.type) { + console.error(message); + reject(new Error("The WebChannel event indicates an error.")); + return; + } + + if (message.requestId === requestId) { + if (message.type === "SUCCESS_RESPONSE") { + resolve(message.response); + } else { + reject(new Error(message.error)); + } + } + } + + window.addEventListener("WebChannelMessageToContent", listener, true); + + window.dispatchEvent( + new CustomEvent("WebChannelMessageToChrome", { + detail: JSON.stringify({ + id: "profiler.firefox.com", + message: { type: "GET_PROFILE", requestId }, + }), + }) + ); + }) + } + + async function runTest() { + try { + // Get the profile. + const profile = await getProfile(); + + // Check that the profile is somewhat reasonable. It should be a gzipped + // profile, so we can only lightly check some properties about it, and check + // that it is an ArrayBuffer. + // + // After the check, modify the title of the document, so the tab title gets + // updated. This is an easy way to pass a message to the test script. + if ( + profile && + typeof profile === 'object' && + ( + // The popup injects the compressed profile as an ArrayBuffer. + (profile instanceof ArrayBuffer) || + // DevTools injects the profile as just the plain object, although + // maybe in the future it could also do it as a compressed profile + // to make this faster (bug 1581963). + Object.keys(profile).includes("threads") + ) + ) { + // The profile looks good! + document.title = successTitle; + } else { + // The profile doesn't look right, surface the error to the terminal. + dump('The gecko profile was malformed in fake-frontend.html\n'); + dump(`Profile: ${JSON.stringify(profile)}\n`); + + // Also to the web console. + console.error(profile); + + // Report the error to the tab title. + document.title = errorTitle; + } + } catch (error) { + // Catch any error and notify the test. + document.title = errorTitle; + dump('An error was caught in fake-frontend.html\n'); + dump(`${error}\n`); + } + } + + runTest(); + </script> + </body> +</html> |