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import { DEFAULT_LAYOUT, type LayoutTree, type SplitNode } from "@dispatch/layout-contract";
import { describe, expect, it } from "vitest";
import { DEFAULT_PANEL_VIEWS, overlaySidePanels, seedLayout } from "./seed";
import { firstCollapsibleNodeId, firstPanelsNode } from "./tree-query";
function sideViews(tree: LayoutTree): string[] {
const root = tree.root as SplitNode;
const side = root.children[1]?.node;
return side?.kind === "panels" ? side.panels.map((p) => p.view) : [];
}
describe("seedLayout", () => {
it("uses the default panels when nothing is stored", () => {
const tree = seedLayout(null, ["tabs", "model", "settings"]);
expect(sideViews(tree)).toEqual(DEFAULT_PANEL_VIEWS);
});
it("overlays the stored selection, dropping unknown/removed kinds", () => {
const tree = seedLayout(
["extensions", "ghost-view", "model"],
["tabs", "model", "extensions", "settings"],
);
expect(sideViews(tree)).toEqual(["extensions", "model"]);
});
it("falls back to the defaults when the stored selection is all-unknown or empty", () => {
expect(sideViews(seedLayout(["ghost"], ["tabs", "model"]))).toEqual(["tabs", "model"]);
expect(sideViews(seedLayout([], ["tabs", "model"]))).toEqual(["tabs", "model"]);
});
it("falls back to the defaults when the stored value is not a string array", () => {
expect(sideViews(seedLayout("junk", ["tabs", "model"]))).toEqual(["tabs", "model"]);
expect(sideViews(seedLayout([42], ["tabs", "model"]))).toEqual(["tabs", "model"]);
expect(sideViews(seedLayout({ a: 1 }, ["tabs", "model"]))).toEqual(["tabs", "model"]);
});
it("preserves the default tree's ids and the titlebar-unset invariant", () => {
const tree = seedLayout(["model"], ["tabs", "model"]);
expect((tree.root as SplitNode).id).toBe("root");
expect(tree.titlebar).toBeUndefined();
});
});
describe("overlaySidePanels", () => {
it("replaces only the side panels of the given base tree", () => {
const tree = overlaySidePanels(DEFAULT_LAYOUT, ["settings", "tasks"]);
expect(sideViews(tree)).toEqual(["settings", "tasks"]);
// The rest of the tree is untouched.
expect((tree.root as SplitNode).children[0]?.node).toEqual(
(DEFAULT_LAYOUT.root as SplitNode).children[0]?.node,
);
});
});
describe("tree queries", () => {
it("firstPanelsNode finds the side panels with its path", () => {
const tree = seedLayout(["model"], ["tabs", "model"]);
const found = firstPanelsNode(tree);
expect(found?.path).toEqual([1]);
expect(found?.node.panels.map((p) => p.view)).toEqual(["model"]);
});
it("firstCollapsibleNodeId returns the default tree's side node id", () => {
expect(firstCollapsibleNodeId(DEFAULT_LAYOUT)).toBe("side");
});
it("firstCollapsibleNodeId falls back to a path key when the node has no id", () => {
const tree: LayoutTree = {
version: 1,
root: {
kind: "split",
dir: "row",
children: [
{ size: 1, node: { kind: "leaf", view: "chat" } },
{
size: 0,
basis: 320,
collapsible: true,
node: { kind: "panels", panels: [{ kind: "leaf", view: "tabs" }] },
},
],
},
};
// The collapsible child sits at root path index 1 → key "1".
expect(firstCollapsibleNodeId(tree)).toBe("1");
});
it("firstCollapsibleNodeId returns null when nothing is collapsible", () => {
const tree: LayoutTree = {
version: 1,
root: {
kind: "split",
dir: "row",
children: [{ size: 1, node: { kind: "leaf", view: "chat" } }],
},
};
expect(firstCollapsibleNodeId(tree)).toBeNull();
});
});
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