seahaven-ap/src/dashboard/selection.test.ts

import { describe, expect, it } from "vitest";
import { countSelectedRows } from "@/dashboard/selection";

describe("countSelectedRows", () => {
  const rowIds = ["inv-1", "inv-2", "inv-3"];

  it("counts include selections", () => {
    expect(countSelectedRows({ type: "include", ids: new Set(["inv-1", "inv-3"]) }, rowIds)).toBe(
      2,
    );
  });

  it("counts exclude select-all with empty exclusions", () => {
    expect(countSelectedRows({ type: "exclude", ids: new Set() }, rowIds)).toBe(3);
  });

  it("counts exclude models after deselecting one row", () => {
    expect(countSelectedRows({ type: "exclude", ids: new Set(["inv-2"]) }, rowIds)).toBe(2);
  });

  it("returns zero for empty include selection", () => {
    expect(countSelectedRows({ type: "include", ids: new Set() }, rowIds)).toBe(0);
  });
});