draft line snapshots (#1445)

* draft line snapshots

Make sure they don't get broken at some point, visual regression is only way to test these really

* A snapshot a day keeps the bugs away! 📷🐛 (OS: ubuntu)

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

e2e/playwright/snapshot-tests.spec.ts

@@ -419,3 +419,61 @@ test('extrude on each default plane should be stable', async ({
   await runSnapshotsForOtherPlanes('YZ')
   await runSnapshotsForOtherPlanes('-YZ')
 })
+
+test('Draft segments should look right', async ({ page }) => {
+  const u = getUtils(page)
+  await page.setViewportSize({ width: 1200, height: 500 })
+  const PUR = 400 / 37.5 //pixeltoUnitRatio
+  await page.goto('/')
+  await u.waitForAuthSkipAppStart()
+  await u.openDebugPanel()
+
+  await expect(page.getByRole('button', { name: 'Start Sketch' })).toBeVisible()
+
+  // click on "Start Sketch" button
+  await u.clearCommandLogs()
+  await u.doAndWaitForImageDiff(
+    () => page.getByRole('button', { name: 'Start Sketch' }).click(),
+    200
+  )
+
+  // select a plane
+  await page.mouse.click(700, 200)
+
+  await expect(page.locator('.cm-content')).toHaveText(
+    `const part001 = startSketchOn('-XZ')`
+  )
+
+  await page.waitForTimeout(300) // TODO detect animation ending, or disable animation
+
+  const startXPx = 600
+  await page.mouse.click(startXPx + PUR * 10, 500 - PUR * 10)
+  const startAt = '[23.89, -32.23]'
+  await expect(page.locator('.cm-content'))
+    .toHaveText(`const part001 = startSketchOn('-XZ')
+  |> startProfileAt(${startAt}, %)`)
+  await page.waitForTimeout(100)
+
+  await u.closeDebugPanel()
+  await page.mouse.move(startXPx + PUR * 20, 500 - PUR * 10)
+  await expect(page).toHaveScreenshot({
+    maxDiffPixels: 100,
+  })
+
+  await page.mouse.click(startXPx + PUR * 20, 500 - PUR * 10)
+  await page.waitForTimeout(100)
+
+  const num = 24.11
+  await expect(page.locator('.cm-content'))
+    .toHaveText(`const part001 = startSketchOn('-XZ')
+  |> startProfileAt(${startAt}, %)
+  |> line([${num}, 0], %)`)
+
+  await page.getByRole('button', { name: 'Tangential Arc' }).click()
+
+  await page.mouse.move(startXPx + PUR * 30, 500 - PUR * 20, { steps: 10 })
+
+  await expect(page).toHaveScreenshot({
+    maxDiffPixels: 100,
+  })
+})