import { describe, expect, it } from "vitest"

import { distributeSpace, type SpaceRequest } from "@/utils/spaceDistribution"

describe("distributeSpace", () => {
  it("should distribute space according to minimum sizes when space is limited", () => {
    const requests: SpaceRequest[] = [
      { minSize: 100 },
      { minSize: 100 },
      { minSize: 100 },
    ]
    expect(distributeSpace(300, requests)).toEqual([100, 100, 100])
  })

  it("should distribute extra space equally when no maxSize", () => {
    const requests: SpaceRequest[] = [{ minSize: 100 }, { minSize: 100 }]
    expect(distributeSpace(400, requests)).toEqual([200, 200])
  })

  it("should respect maximum sizes", () => {
    const requests: SpaceRequest[] = [
      { minSize: 100, maxSize: 150 },
      { minSize: 100 },
    ]
    expect(distributeSpace(400, requests)).toEqual([150, 250])
  })

  it("should handle empty requests array", () => {
    expect(distributeSpace(1000, [])).toEqual([])
  })

  it("should handle negative total space", () => {
    const requests: SpaceRequest[] = [{ minSize: 100 }, { minSize: 100 }]
    expect(distributeSpace(-100, requests)).toEqual([100, 100])
  })

  it("should handle total space smaller than minimum sizes", () => {
    const requests: SpaceRequest[] = [{ minSize: 100 }, { minSize: 100 }]
    expect(distributeSpace(100, requests)).toEqual([100, 100])
  })
})