increase test coverage

extend test coverage

tests/e2e/unit/svgcore-path-extra.spec.js

@@ -0,0 +1,37 @@
+import { test, expect } from '../fixtures.js'
+
+test.describe('SVG core path extras', () => {
+  test.beforeEach(async ({ page }) => {
+    await page.goto('/tests/unit-harness.html')
+    await page.waitForFunction(() => Boolean(window.svgHarness?.pathModule))
+  })
+
+  test('convertPath handles arcs and shorthand commands', async ({ page }) => {
+    const result = await page.evaluate(() => {
+      const { pathModule, units } = window.svgHarness
+      // Ensure unit helpers are initialized so shortFloat can round numbers.
+      units.init({
+        getRoundDigits: () => 3,
+        getBaseUnit: () => 'px',
+        getElement: () => null,
+        getHeight: () => 100,
+        getWidth: () => 100
+      })
+      const path = document.createElementNS('http://www.w3.org/2000/svg', 'path')
+      path.setAttribute(
+        'd',
+        'M0 0 H10 V10 h-5 v-5 a5 5 0 0 1 5 5 S20 20 25 25 Z'
+      )
+
+      const rel = pathModule.convertPath(path, true)
+      const abs = pathModule.convertPath(path, false)
+
+      return { rel, abs }
+    })
+
+    expect(result.rel.toLowerCase()).toContain('a')
+    expect(result.rel).toContain('s')
+    expect(result.abs).toContain('L')
+    expect(result.abs).toContain('A')
+  })
+})