1 files changed, 66 insertions, 0 deletions
diff --git a/packages/integrations/netlify/test/functions/edge-middleware.test.js b/packages/integrations/netlify/test/functions/edge-middleware.test.js
new file mode 100644
index 000000000..683ec3b01
--- /dev/null
+++ b/packages/integrations/netlify/test/functions/edge-middleware.test.js
@@ -0,0 +1,66 @@
+import * as assert from 'node:assert/strict';
+import { after, before, describe, it } from 'node:test';
+import { loadFixture } from '../../../../astro/test/test-utils.js';
+
+describe(
+	'Middleware',
+	() => {
+		const root = new URL('./fixtures/middleware/', import.meta.url);
+
+		describe('edgeMiddleware: false', () => {
+			let fixture;
+			before(async () => {
+				process.env.EDGE_MIDDLEWARE = 'false';
+				fixture = await loadFixture({ root });
+				await fixture.build();
+			});
+
+			it('emits no edge function', async () => {
+				assert.equal(
+					fixture.pathExists('../.netlify/v1/edge-functions/middleware/middleware.mjs'),
+					false
+				);
+			});
+
+			it('applies middleware to static files at build-time', async () => {
+				// prerendered page has middleware applied at build time
+				const prerenderedPage = await fixture.readFile('prerender/index.html');
+				assert.equal(prerenderedPage.includes('<title>Middleware</title>'), true);
+			});
+
+			after(async () => {
+				process.env.EDGE_MIDDLEWARE = undefined;
+				await fixture.clean();
+			});
+		});
+
+		describe('edgeMiddleware: true', () => {
+			let fixture;
+			before(async () => {
+				process.env.EDGE_MIDDLEWARE = 'true';
+				fixture = await loadFixture({ root });
+				await fixture.build();
+			});
+
+			it('emits an edge function', async () => {
+				const contents = await fixture.readFile(
+					'../.netlify/v1/edge-functions/middleware/middleware.mjs'
+				);
+				assert.equal(contents.includes('"Hello world"'), false);
+			});
+
+			it.skip('does not apply middleware during prerendering', async () => {
+				const prerenderedPage = await fixture.readFile('prerender/index.html');
+				assert.equal(prerenderedPage.includes('<title></title>'), true);
+			});
+
+			after(async () => {
+				process.env.EDGE_MIDDLEWARE = undefined;
+				await fixture.clean();
+			});
+		});
+	},
+	{
+		timeout: 120000,
+	}
+);