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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Tests that the inspector panel has a 3 pane toggle button, and that
// this button is visible both in BOTTOM and SIDE hosts.
add_task(async function () {
info("Switch to 2 pane inspector to test the 3 pane toggle button behavior");
await pushPref("devtools.inspector.three-pane-enabled", false);
info("Open the inspector in a bottom toolbox host");
const { inspector, toolbox } = await openInspectorForURL(
"about:blank",
"bottom"
);
const button = inspector.panelDoc.querySelector(".sidebar-toggle");
ok(button, "The toggle button exists in the DOM");
ok(button.getAttribute("title"), "The title tooltip has initial state");
ok(
button.classList.contains("pane-collapsed"),
"The button is in collapsed state"
);
ok(!!button.getClientRects().length, "The button is visible");
info("Switch the host to the right");
await toolbox.switchHost("right");
ok(!!button.getClientRects().length, "The button is still visible");
ok(
button.classList.contains("pane-collapsed"),
"The button is still in collapsed state"
);
});