import { describe, expect, it } from "vitest";
import { cellPreview, compareCells, filterRows, suggestedColumnWidth } from "./resultView";

describe("结果展示边界", () => {
  it("大整数文本排序不丢精度", () => {
    expect(compareCells("9007199254740993", "9007199254740992")).toBe(1);
    expect(compareCells("-9007199254740993", "-9007199254740992")).toBe(-1);
    expect(compareCells(null, "")).toBe(-1);
    expect(compareCells("1.2", "1.11")).toBeGreaterThan(0);
    expect(compareCells("1e3", "999")).toBeGreaterThan(0);
  });
  it("本地筛选覆盖 NULL、JSON、布尔值，不修改原数组", () => {
    const rows = [{ x: null }, { x: { name: "Alice" } }, { x: false }, { x: "" }];
    expect(filterRows(rows, ["x"], "alice")).toEqual([rows[1]]);
    expect(filterRows(rows, ["x"], "NULL")).toEqual([rows[0]]);
    expect(filterRows(rows, ["x"], "false")).toEqual([rows[2]]);
    expect(filterRows(rows, ["x"], " ")).toBe(rows);
    expect(rows).toHaveLength(4);
  });
  it("长 JSON 与文本都截断预览，原值保留", () => {
    const value = { text: "x".repeat(500) };
    expect(cellPreview(value)).toHaveLength(121);
    expect(value.text).toHaveLength(500);
    expect(cellPreview(false)).toBe("false");
    expect(cellPreview(0)).toBe("0");
  });
  it("自动列宽有上下限并考虑中文宽度", () => {
    expect(suggestedColumnWidth("id", [])).toBe(88);
    expect(suggestedColumnWidth("数据", [{ 数据: "中".repeat(100) }])).toBe(480);
    expect(suggestedColumnWidth("name", [{ name: "中国数据库" }])).toBeGreaterThan(88);
  });
});