fix(vercel): fallback to static 404.html (#9648)

1 files changed, 23 insertions, 0 deletions

diff --git a/packages/integrations/vercel/test/prerendered-error-pages.test.js b/packages/integrations/vercel/test/prerendered-error-pages.test.js
new file mode 100644
index 000000000..908566223
--- /dev/null
+++ b/packages/integrations/vercel/test/prerendered-error-pages.test.js
@@ -0,0 +1,23 @@
+import { loadFixture } from './test-utils.js';
+import { expect } from 'chai';
+
+describe('prerendered error pages routing', () => {
+	/** @type {import('./test-utils.js').Fixture} */
+	let fixture;
+
+	before(async () => {
+		fixture = await loadFixture({
+			root: './fixtures/prerendered-error-pages/',
+		});
+		await fixture.build();
+	});
+
+	it('falls back to 404.html', async () => {
+		const deploymentConfig = JSON.parse(await fixture.readFile('../.vercel/output/config.json'));
+		expect(deploymentConfig.routes.at(-1)).to.deep.include({
+			src: '/.*',
+			dest: '/404.html',
+			status: 404,
+		});
+	});
+});