WYSIWYG: Moveable 가이드라인 고도화(중심/가장자리 스냅, 8px 임계) TDD/구현 및 테스트

components/wysiwyg/Canvas.moveable.events.test.tsx

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+import React from 'react'
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { render, screen, waitFor } from '@testing-library/react'
+import { act } from 'react-dom/test-utils'
+import { Canvas } from '@/components/wysiwyg/Canvas'
+import type { Frame } from '@/lib/wysiwyg/schema'
+
+const capture = vi.fn()
+type MProps = {
+  onDragStart?: (e: unknown) => void
+  onDrag?: (e: { left?: number; top?: number }) => void
+  onDragEnd?: (e: unknown) => void
+  onResize?: (e: { width?: number; height?: number }) => void
+  onRotate?: (e: { rotate?: number; inputEvent?: { shiftKey?: boolean } }) => void
+}
+
+vi.mock('react-moveable', () => {
+  const Mock = (props: Record<string, unknown>) => {
+    capture(props)
+    return <div data-testid="moveable" />
+  }
+  return { default: Mock }
+})
+
+const frame: Frame = {
+  id: 'f1',
+  width: 400,
+  height: 300,
+  background: '#fff',
+  layers: [
+    { id: 'l1', name: 'L1', visible: true, locked: false, objects: [
+      { id: 'o1', type: 'text', x: 10, y: 10, width: 80, height: 30, rotate: 0, zIndex: 0, props: { text: 'T', fontSize: 16, color: '#000' } },
+    ]}
+  ]
+}
+
+describe('Canvas + Moveable events', () => {
+  beforeEach(() => {
+    capture.mockReset()
+  })
+
+  it('onDrag applies 8px snap and updates left/top, guides show/hide', async () => {
+    render(<Canvas frame={frame} />)
+    const last = capture.mock.calls.at(-1)?.[0] as MProps
+    expect(last).toBeTruthy()
+
+    // start drag: guides visible
+    await act(async () => { last.onDragStart?.({}) })
+    await screen.findByTestId('guide-x')
+
+    // move: set left/top to 17/21 → snapped to 16/24
+    await act(async () => { last.onDrag?.({ left: 17, top: 21 }) })
+    const obj = screen.getByTestId('obj-o1') as HTMLElement
+    await waitFor(() => {
+      expect(obj.style.left).toBe('16px')
+      expect(obj.style.top).toBe('24px')
+    })
+
+    // end: guides hidden
+    await act(async () => { last.onDragEnd?.({}) })
+    await waitFor(() => {
+      expect(screen.queryByTestId('guide-x')).toBeNull()
+    })
+  })
+
+  it('onResize applies 8px snap and min size', async () => {
+    render(<Canvas frame={frame} />)
+    const last = capture.mock.calls.at(-1)?.[0] as MProps
+    expect(last).toBeTruthy()
+
+    await act(async () => { last.onResize?.({ width: 83, height: 13 }) })
+    const obj = screen.getByTestId('obj-o1') as HTMLElement
+    await waitFor(() => {
+      expect(obj.style.width).toBe('80px')
+      expect(obj.style.height).toBe('16px')
+    })
+  })
+
+  it('onRotate applies 15deg snap (no shift) and 1deg with shift', async () => {
+    render(<Canvas frame={frame} />)
+    const last = capture.mock.calls.at(-1)?.[0] as MProps
+    expect(last).toBeTruthy()
+
+    await act(async () => { last.onRotate?.({ rotate: 7, inputEvent: { shiftKey: false } }) })
+    const obj = screen.getByTestId('obj-o1') as HTMLElement
+    await waitFor(() => {
+      expect(obj.style.transform).toContain('rotate(15deg)')
+    })
+
+    await act(async () => { last.onRotate?.({ rotate: 22, inputEvent: { shiftKey: true } }) })
+    await waitFor(() => {
+      expect(obj.style.transform).toContain('rotate(22deg)')
+    })
+  })
+})