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import { loadFixture } from '@astrojs/test-utils';
import { expect } from 'chai';

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 () => {
			expect(fixture.pathExists('../.netlify/edge-functions/middleware/middleware.mjs')).to.be
				.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');
			expect(prerenderedPage).to.contain('<title>Middleware</title>');
		});
	});

	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/edge-functions/middleware/middleware.mjs'
			);
			expect(contents.includes('"Hello world"')).to.be.false;
		});

		it('does not apply middleware during prerendering', async () => {
			const prerenderedPage = await fixture.readFile('prerender/index.html');
			expect(prerenderedPage).to.contain('<title></title>');
		});
	});
});