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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Tests that the 3 pane toggle button can toggle on and off the inspector's 3 pane mode,
// and the 3 panes rendered are all of equal widths in the BOTTOM host.
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);
const { inspector } = await openInspectorForURL("about:blank");
const { panelDoc: doc } = inspector;
const button = doc.querySelector(".sidebar-toggle");
const ruleViewSidebar =
inspector.sidebarSplitBoxRef.current.startPanelContainer;
const toolboxWidth = doc.getElementById("inspector-splitter-box").clientWidth;
ok(
button.classList.contains("pane-collapsed"),
"The button is in collapsed state"
);
info("Click on the toggle button to toggle ON 3 pane inspector");
let onRuleViewAdded = inspector.once("ruleview-added");
EventUtils.synthesizeMouseAtCenter(
button,
{},
inspector.panelDoc.defaultView
);
await onRuleViewAdded;
info("Checking the state of the 3 pane inspector");
let sidebarWidth = inspector.splitBox.state.width;
const sidebarSplitBoxWidth = inspector.sidebarSplitBoxRef.current.state.width;
ok(
!button.classList.contains("pane-collapsed"),
"The button is in expanded state"
);
ok(doc.getElementById("ruleview-panel"), "The rule view panel exist");
is(
inspector.sidebar.getCurrentTabID(),
"layoutview",
"Layout view is shown in the sidebar"
);
is(
ruleViewSidebar.style.display,
"block",
"The split rule view sidebar is displayed"
);
is(sidebarWidth, (toolboxWidth * 2) / 3, "Got correct main split box width");
is(
sidebarSplitBoxWidth,
toolboxWidth / 3,
"Got correct sidebar split box width"
);
info("Click on the toggle button to toggle OFF the 3 pane inspector");
onRuleViewAdded = inspector.once("ruleview-added");
EventUtils.synthesizeMouseAtCenter(
button,
{},
inspector.panelDoc.defaultView
);
await onRuleViewAdded;
info("Checking the state of the 2 pane inspector");
sidebarWidth = inspector.splitBox.state.width;
ok(
button.classList.contains("pane-collapsed"),
"The button is in collapsed state"
);
is(
inspector.sidebar.getCurrentTabID(),
"ruleview",
"Rule view is shown in the sidebar"
);
is(
ruleViewSidebar.style.display,
"none",
"The split rule view sidebar is hidden"
);
is(sidebarWidth, sidebarSplitBoxWidth, "Got correct sidebar width");
});