테스트/린트 안정화: 버튼 쿼리 모호성 제거, 훅 deps 보강, vi.spyOn 모킹, 멀티선택 Moveable 간섭 방지 재확인, 스냅 우선순위 회귀 그린

components/wysiwyg/Canvas.guides.closest.acceptance.test.tsx

@@ -0,0 +1,50 @@
+import { describe, it, expect } from 'vitest'
+import { render, screen, fireEvent, waitFor } from '@testing-library/react'
+import { WysiwygBuilderPage } from '@/components/wysiwyg/WysiwygBuilderPage'
+
+function getLeft(el: HTMLElement) {
+  const style = el.getAttribute('style') || ''
+  const m = /left:\s*(\d+)px/
+  return Number((style.match(m)?.[1]) || '0')
+}
+
+function getTop(el: HTMLElement) {
+  const style = el.getAttribute('style') || ''
+  const m = /top:\s*(\d+)px/
+  return Number((style.match(m)?.[1]) || '0')
+}
+
+describe('Canvas guides - nearest candidate priority', () => {
+  it('snaps to the nearest edge candidate among multiple options', async () => {
+    render(<WysiwygBuilderPage />)
+    const addText = () => fireEvent.click(screen.getByRole('button', { name: /^Add Text$/i }))
+    // Create three objects: A (will move), B and C as anchors
+    addText() // A
+    addText() // B
+    addText() // C
+    const objs = await screen.findAllByTestId(/obj-text-/)
+    const [A, B, C] = objs
+
+    // Place B at x=160 (left), C at x=200 (left) via drags
+    // Select B and drag +100 from 60 -> 160
+    fireEvent.mouseDown(B, { clientX: 60, clientY: 60 })
+    const canvas = screen.getByTestId('wysiwyg-canvas')
+    fireEvent.mouseMove(canvas, { clientX: 160, clientY: 60 })
+    fireEvent.mouseUp(canvas)
+    await waitFor(() => expect(getLeft(B)).toBe(160))
+
+    // Select C and drag +140 from 60 -> 200
+    fireEvent.mouseDown(C, { clientX: 60, clientY: 120 })
+    fireEvent.mouseMove(canvas, { clientX: 200, clientY: 120 })
+    fireEvent.mouseUp(canvas)
+    await waitFor(() => expect(getLeft(C)).toBe(200))
+
+    // Now drag A near between 160 and 200, closer to 160, expect snap to 160
+    fireEvent.mouseDown(A, { clientX: 60, clientY: 180 })
+    fireEvent.mouseMove(canvas, { clientX: 168, clientY: 180 }) // delta +108 -> near 160 more than 200
+    await screen.findByTestId('guide-x')
+    fireEvent.mouseUp(canvas)
+
+    await waitFor(() => expect(getLeft(A)).toBe(160))
+  })
+})