/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
// Record allocations while opening and closing DevTools
const TEST_URL =
"data:text/html;charset=UTF-8," +
encodeURIComponent(
`
Test page
element
`
);
const { require } = ChromeUtils.importESModule(
"resource://devtools/shared/loader/Loader.sys.mjs"
);
const {
gDevTools,
} = require("resource://devtools/client/framework/devtools.js");
async function testScript(
toolbox,
inspector,
nodeFrontA,
nodeFrontB,
nodeFrontC
) {
let onSelectionChanged = toolbox.once("selection-changed");
let updated = inspector.once("inspector-updated");
let onBoxModelUpdated = inspector.once("boxmodel-view-updated");
inspector.selection.setNodeFront(nodeFrontA, {
reason: "browser-context-menu",
});
await onSelectionChanged;
await updated;
await onBoxModelUpdated;
onSelectionChanged = toolbox.once("selection-changed");
updated = inspector.once("inspector-updated");
inspector.selection.setNodeFront(nodeFrontB, {
reason: "browser-context-menu",
});
await onSelectionChanged;
await updated;
onSelectionChanged = toolbox.once("selection-changed");
updated = inspector.once("inspector-updated");
onBoxModelUpdated = inspector.once("boxmodel-view-updated");
inspector.selection.setNodeFront(nodeFrontC, {
reason: "browser-context-menu",
});
await onSelectionChanged;
await updated;
await onBoxModelUpdated;
}
add_task(async function () {
const tab = await addTab(TEST_URL);
const toolbox = await gDevTools.showToolboxForTab(tab, {
toolId: "inspector",
});
const inspector = toolbox.getPanel("inspector");
const root = await inspector.walker.getRootNode();
const body = await inspector.walker.querySelector(root, "body");
const style = await inspector.walker.querySelector(root, "style");
const { nodes } = await inspector.walker.children(style);
const styleText = nodes[0];
const div = await inspector.walker.querySelector(root, "div");
// Run the test scenario first before recording in order to load all the
// modules. Otherwise they get reported as "still allocated" objects,
// whereas we do expect them to be kept in memory as they are loaded via
// the main DevTools loader, which keeps the module loaded until the
// shutdown of Firefox
await testScript(toolbox, inspector, body, styleText, div);
// Now, run the test script. This time, we record this run.
await startRecordingAllocations();
for (let i = 0; i < 10; i++) {
await testScript(toolbox, inspector, body, styleText, div);
}
// Text property editor updates async and doesn't emit reliable event
// to wait for all async operations.
// This can be really slow and require >1s to wait for all the accumulated async calls.
// eslint-disable-next-line mozilla/no-arbitrary-setTimeout
await new Promise(r => setTimeout(r, 2000));
await stopRecordingAllocations("inspector-selections");
await toolbox.destroy();
gBrowser.removeTab(tab);
});