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TypeScript
at main
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182import { describe, test, expect } from "bun:test";import { orderTabs, sameOrder, moveWithinOrder } from "./tabOrder";import type { SessionTab } from "../stores/useStore";
const tab = (sessionId: string): SessionTab => ({ sessionId, name: sessionId, createdAt: "", kind: "claude-code", connected: false,});const ids = (tabs: SessionTab[]) => tabs.map((t) => t.sessionId);
describe("orderTabs", () => { const tabs = [tab("a"), tab("b"), tab("c")];
test("no/empty order → returns the list unchanged", () => { expect(orderTabs(tabs, undefined)).toBe(tabs); expect(orderTabs(tabs, [])).toBe(tabs); });
test("full order reorders the tabs", () => { expect(ids(orderTabs(tabs, ["c", "a", "b"]))).toEqual(["c", "a", "b"]); });
test("ids not in the order keep their relative order and land at the end", () => { // only "c" is ordered; "a"/"b" are unknown → appended in their original order expect(ids(orderTabs(tabs, ["c"]))).toEqual(["c", "a", "b"]); // "b" first, then the unknown "a","c" in input order expect(ids(orderTabs(tabs, ["b"]))).toEqual(["b", "a", "c"]); });
test("stale ids in the order (deleted tabs) are ignored", () => { expect(ids(orderTabs(tabs, ["gone", "b", "a"]))).toEqual(["b", "a", "c"]); });
test("does not mutate the input array", () => { const input = [tab("a"), tab("b")]; orderTabs(input, ["b", "a"]); expect(ids(input)).toEqual(["a", "b"]); });
test("empty tabs → empty result", () => { expect(orderTabs([], ["a", "b"])).toEqual([]); });});
describe("moveWithinOrder", () => { const ids = ["a", "b", "c", "d"]; test("move earlier → later takes the target slot", () => { expect(moveWithinOrder(ids, "a", "c")).toEqual(["b", "c", "a", "d"]); }); test("move later → earlier takes the target slot", () => { expect(moveWithinOrder(ids, "d", "b")).toEqual(["a", "d", "b", "c"]); }); test("same id or absent id → unchanged (same reference)", () => { expect(moveWithinOrder(ids, "a", "a")).toBe(ids); expect(moveWithinOrder(ids, "z", "b")).toBe(ids); expect(moveWithinOrder(ids, "a", "z")).toBe(ids); }); test("does not mutate the input", () => { const input = ["a", "b", "c"]; moveWithinOrder(input, "a", "c"); expect(input).toEqual(["a", "b", "c"]); });});
describe("sameOrder", () => { test("equal positionally", () => { expect(sameOrder(["a", "b"], ["a", "b"])).toBe(true); }); test("different order or length", () => { expect(sameOrder(["a", "b"], ["b", "a"])).toBe(false); expect(sameOrder(["a"], ["a", "b"])).toBe(false); }); test("undefined is never equal", () => { expect(sameOrder(undefined, ["a"])).toBe(false); expect(sameOrder(["a"], undefined)).toBe(false); expect(sameOrder(undefined, undefined)).toBe(false); });});