import { describe, expect, it } from "vitest";
import { comparisonDelta, comparisonReferenceNames } from "./comparison";

describe("weapon comparison context", () => {
  it("shows relative gains and losses, including decimals", () => {
    expect(comparisonDelta("109")).toBe("+9% จากค่าฐาน");
    expect(comparisonDelta("98.5")).toBe("-1.5% จากค่าฐาน");
    expect(comparisonDelta("100")).toBe("เท่าค่าฐาน");
  });
  it("does not present missing or placeholder numbers as damage losses", () => {
    for (const value of [null, "0", "invalid"]) expect(comparisonDelta(value)).toBeNull();
  });
  it("keeps team and personal reference rows separate", () => {
    const rows = [
      { weapon: { name: "Team reference" }, refinement: "5", overallPercent: "100", personalPercent: "110" },
      { weapon: { name: "Personal reference" }, refinement: "1", overallPercent: "105", personalPercent: "100" },
    ];
    expect(comparisonReferenceNames(rows, "overallPercent")).toEqual(["Team reference R5"]);
    expect(comparisonReferenceNames(rows, "personalPercent")).toEqual(["Personal reference R1"]);
    expect(comparisonReferenceNames(rows.slice(0, 1), "personalPercent")).toEqual([]);
  });
});