WYSIWYG: 스냅 유틸 공통화(snap8/snapAngle) 및 메인플랜 업데이트

lib/wysiwyg/snap.test.ts

@@ -0,0 +1,24 @@
+import { describe, it, expect } from 'vitest'
+import { snap8, snapAngle } from '@/lib/wysiwyg/snap'
+
+describe('snap utils', () => {
+  it('snap8 rounds to nearest 8', () => {
+    expect(snap8(0)).toBe(0)
+    expect(snap8(3)).toBe(0)
+    expect(snap8(4)).toBe(8)
+    expect(snap8(11)).toBe(8)
+    expect(snap8(12)).toBe(16)
+  })
+
+  it('snapAngle snaps to 15deg by default', () => {
+    expect(snapAngle(0)).toBe(0)
+    expect(snapAngle(7)).toBe(15)
+    expect(snapAngle(22)).toBe(15)
+    expect(snapAngle(30)).toBe(30)
+  })
+
+  it('snapAngle respects fine=true (1deg)', () => {
+    expect(snapAngle(7, true)).toBe(7)
+    expect(snapAngle(22, true)).toBe(22)
+  })
+})