Test: Can load a file with CRLF line endings (#3636)

* Test: Can load a file with CRLF line endings #3616

* first arg stuff??

* Fix paths in playwright for windows

* Fix line ending replace on windows

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

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

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

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

---------

Co-authored-by: Adam Sunderland <iterion@gmail.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Jess Frazelle <jessfraz@users.noreply.github.com>
Co-authored-by: Adam Sunderland <adam@kittycad.io>

e2e/playwright/projects.spec.ts

@@ -590,6 +590,48 @@ test(
   }
 )
 
+test(
+  'Can load a file with CRLF line endings',
+  { tag: '@electron' },
+  async ({ browserName }, testInfo) => {
+    const { electronApp, page } = await setupElectron({
+      testInfo,
+      folderSetupFn: async (dir) => {
+        const routerTemplateDir = join(dir, 'router-template-slate')
+        await fsp.mkdir(routerTemplateDir, { recursive: true })
+
+        const file = await fsp.readFile(
+          executorInputPath('router-template-slate.kcl'),
+          'utf-8'
+        )
+        // Replace both \r optionally so we don't end up with \r\r\n
+        const fileWithCRLF = file.replace(/\r?\n/g, '\r\n')
+        await fsp.writeFile(
+          join(routerTemplateDir, 'main.kcl'),
+          fileWithCRLF,
+          'utf-8'
+        )
+      },
+    })
+    const u = await getUtils(page)
+    await page.setViewportSize({ width: 1200, height: 500 })
+
+    page.on('console', console.log)
+
+    await page.getByText('router-template-slate').click()
+    await expect(page.getByTestId('loading')).toBeAttached()
+    await expect(page.getByTestId('loading')).not.toBeAttached({
+      timeout: 20_000,
+    })
+
+    await expect(u.codeLocator).toContainText('routerDiameter')
+    await expect(u.codeLocator).toContainText('templateGap')
+    await expect(u.codeLocator).toContainText('minClampingDistance')
+
+    await electronApp.close()
+  }
+)
+
 test(
   'Can sort projects on home page',
   { tag: '@electron' },