Initial commit: 包装审核 POC、Docker 与前后端

Made-with: Cursor

frontend/tests/pdfPreviewMath.test.ts

@@ -0,0 +1,84 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+import type { FieldResult } from '../src/types'
+import { getOverlayRect, getScrollTarget, getTargetZoom } from '../src/components/pdfPreviewMath'
+
+const field: FieldResult = {
+  id: 'field-1',
+  page: 1,
+  text: '食品名称：天问礼品粽',
+  font_name: 'Mock Font',
+  font_size_pt: 12,
+  font_height_mm: 4,
+  x0_pt: 100,
+  top_pt: 80,
+  x1_pt: 180,
+  bottom_pt: 116,
+  normalized_text: '食品名称天问礼品粽',
+  validation_status: 'matched',
+  validation_reason: 'matched',
+  matched_excerpt: '食品名称：天问礼品粽',
+}
+
+test('getOverlayRect keeps tiny fields visible without drifting away from center', () => {
+  const rect = getOverlayRect(
+    {
+      ...field,
+      x1_pt: 101,
+      bottom_pt: 81,
+    },
+    0.4,
+    0.4,
+  )
+
+  assert.equal(rect.width, 4)
+  assert.equal(rect.height, 4)
+  assert.equal(rect.strokeWidth, 1)
+  assert.equal(rect.left, 38.2)
+  assert.equal(rect.top, 30.2)
+})
+
+test('getTargetZoom caps focus zoom and keeps normal fit as the floor', () => {
+  assert.equal(
+    getTargetZoom(field, { width: 1200, height: 900 }, 0.5),
+    2.8,
+  )
+
+  assert.equal(
+    getTargetZoom(field, { width: 0, height: 900 }, 0.5),
+    1,
+  )
+})
+
+test('getScrollTarget centers the active field and clamps to scroll bounds', () => {
+  const rect = getOverlayRect(field, 2, 2)
+  const centered = getScrollTarget({
+    containerWidth: 800,
+    containerHeight: 600,
+    scrollWidth: 2200,
+    scrollHeight: 1800,
+    pageOffsetLeft: 260,
+    pageOffsetTop: 420,
+    rect,
+  })
+
+  assert.deepEqual(centered, {
+    left: 140,
+    top: 316,
+  })
+
+  const clamped = getScrollTarget({
+    containerWidth: 800,
+    containerHeight: 600,
+    scrollWidth: 1200,
+    scrollHeight: 900,
+    pageOffsetLeft: 20,
+    pageOffsetTop: 30,
+    rect,
+  })
+
+  assert.deepEqual(clamped, {
+    left: 0,
+    top: 0,
+  })
+})