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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Test that a newly-added style sheet shows up in the style editor.
const TESTCASE_URI = TEST_BASE_HTTPS + "simple.html";
add_task(async function () {
const { ui } = await openStyleEditorForURL(TESTCASE_URI);
is(ui.editors.length, 2, "Two sheets present after load.");
// We have to wait for the length to change, because we might still
// be seeing events from the initial open.
const added = new Promise(resolve => {
const handler = () => {
if (ui.editors.length === 3) {
ui.off("editor-added", handler);
resolve();
}
};
ui.on("editor-added", handler);
});
info("Adding a style sheet");
await SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
const document = content.document;
const style = document.createElement("style");
style.appendChild(document.createTextNode("div { background: #f06; }"));
document.head.appendChild(style);
});
await added;
is(ui.editors.length, 3, "Three sheets present after new style sheet");
});