pms-iot-vue/src/components/mt-edit/utils/__tests__/line-interaction.spec.ts

import { describe, expect, it, vi } from 'vitest'
import {
  completeLineEdit,
  hasLineDragStarted,
  normalizeLineGeometry
} from '@/components/mt-edit/utils/line-interaction'

describe('自由连线拖动', () => {
  it('鼠标轻微抖动时不开始拖动', () => {
    expect(hasLineDragStarted(1, 1)).toBe(false)
    expect(hasLineDragStarted(2, 2)).toBe(false)
    expect(hasLineDragStarted(3, 0)).toBe(true)
  })

  it('只在真实拖动结束并写回最终数据后记录历史', () => {
    const calls: string[] = []
    const update = vi.fn(() => calls.push('update'))
    const complete = vi.fn(() => calls.push('history'))

    completeLineEdit({ id: 'line-1' }, false, update, complete)
    expect(calls).toEqual([])

    completeLineEdit({ id: 'line-1' }, true, update, complete)
    expect(calls).toEqual(['update', 'history'])
  })

  it('将 DOM 和缩放计算产生的坐标统一保留两位小数', () => {
    expect(
      normalizeLineGeometry(
        {
          left: 1480.034912109375,
          top: Number('669.9048461914062'),
          width: 100.00000000003,
          height: Number('50.99999999997')
        },
        [
          { x: 0.00000000003, y: 0 },
          { x: 99.99999999997, y: 50.123456 }
        ]
      )
    ).toEqual({
      binfo: { left: 1480.03, top: 669.9, width: 100, height: 51 },
      points: [
        { x: 0, y: 0 },
        { x: 100, y: 50.12 }
      ]
    })
  })
})