Miguel PalhasandClaude Sonnet 5
0cc25d7e1c
splitLeaf always halved just the target pane, so repeated splits left one pane at 50% and the rest squeezed into shrinking fractions instead of equal columns. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
108 lines
3.1 KiB
TypeScript
108 lines
3.1 KiB
TypeScript
import { describe, expect, it } from "vitest";
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import {
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emptyLayout,
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equalizeRatios,
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leaves,
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locateSession,
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openSessions,
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removeLeaf,
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splitLeaf,
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type Tab,
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} from "./layout.js";
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function tabWithOneLeaf(sessionId: string | null = null): Tab {
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const layout = emptyLayout();
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const tab = layout.tabs[0];
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splitLeaf(tab, "", sessionId, "row", true);
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return tab;
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}
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describe("splitLeaf", () => {
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it("seeds an empty tab with a single leaf", () => {
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const tab = tabWithOneLeaf("s1");
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expect(leaves(tab.root)).toHaveLength(1);
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expect(leaves(tab.root)[0].sessionId).toBe("s1");
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});
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it("splits a leaf in two and returns the new id", () => {
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const tab = tabWithOneLeaf("s1");
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const target = leaves(tab.root)[0].id;
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const fresh = splitLeaf(tab, target, "s2", "row", true);
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const ids = leaves(tab.root).map((l) => l.id);
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expect(ids).toHaveLength(2);
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expect(ids).toContain(fresh);
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});
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it("honours the side the caller asked for", () => {
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const tab = tabWithOneLeaf("s1");
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const target = leaves(tab.root)[0].id;
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const fresh = splitLeaf(tab, target, "s2", "row", false);
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expect(leaves(tab.root)[0].id).toBe(fresh);
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});
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});
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describe("equalizeRatios", () => {
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it("resets nested splits to equal width, not just the newest one", () => {
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const tab = tabWithOneLeaf("s1");
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const first = leaves(tab.root)[0].id;
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splitLeaf(tab, first, "s2", "row", true); // A|B, 0.5/0.5
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const second = leaves(tab.root)[1].id;
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splitLeaf(tab, second, "s3", "row", true); // A(0.5) | (B|C, 0.5/0.5) -> B,C at 0.25 each
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equalizeRatios(tab.root);
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const root = tab.root as Extract<typeof tab.root, { kind: "split" }>;
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expect(root.ratio).toBeCloseTo(1 / 3);
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const inner = root.b as Extract<typeof root.b, { kind: "split" }>;
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expect(inner.ratio).toBeCloseTo(1 / 2);
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});
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});
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describe("removeLeaf", () => {
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it("collapses the parent split into the surviving sibling", () => {
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const tab = tabWithOneLeaf("s1");
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const first = leaves(tab.root)[0].id;
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splitLeaf(tab, first, "s2", "row", true);
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removeLeaf(tab, first);
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const remaining = leaves(tab.root);
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expect(remaining).toHaveLength(1);
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expect(remaining[0].sessionId).toBe("s2");
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expect(tab.root?.kind).toBe("leaf");
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});
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it("empties the tab when the last leaf goes", () => {
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const tab = tabWithOneLeaf("s1");
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removeLeaf(tab, leaves(tab.root)[0].id);
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expect(tab.root).toBeNull();
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});
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});
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describe("locateSession / openSessions", () => {
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it("finds the tab and leaf showing a session", () => {
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const layout = emptyLayout();
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const tab = layout.tabs[0];
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splitLeaf(tab, "", "s1", "row", true);
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const hit = locateSession(layout, "s1");
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expect(hit?.tab.id).toBe(tab.id);
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expect(hit?.leaf.sessionId).toBe("s1");
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expect(locateSession(layout, "nope")).toBeNull();
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});
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it("reports every open session once", () => {
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const layout = emptyLayout();
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const tab = layout.tabs[0];
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splitLeaf(tab, "", "s1", "row", true);
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const first = leaves(tab.root)[0].id;
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splitLeaf(tab, first, "s2", "row", true);
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expect(openSessions(layout)).toEqual(new Set(["s1", "s2"]));
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});
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});
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