feature: serverus modularly serves up a directory as an HTTP server

tests/04_test_overriding_handlers.test.ts

@@ -0,0 +1,48 @@
+import * as asserts from '@std/assert';
+import { EPHEMERAL_SERVER, get_ephemeral_listen_server } from './helpers.ts';
+import * as path from '@std/path';
+
+Deno.test({
+	name: 'override the default handlers',
+	permissions: {
+		env: true,
+		read: true,
+		write: true,
+		net: true
+	},
+	fn: async () => {
+		let test_server_info: EPHEMERAL_SERVER | null = null;
+		const cwd = Deno.cwd();
+		const old_handlers: string | undefined = Deno.env.get('SERVERUS_HANDLERS');
+
+		try {
+			Deno.chdir('./tests/www');
+			Deno.env.set(
+				'SERVERUS_HANDLERS',
+				`${path.join(path.dirname(path.resolve(path.fromFileUrl(import.meta.url))), 'handlers')}${
+					old_handlers ? (';' + old_handlers) : ''
+				}`
+			);
+			test_server_info = await get_ephemeral_listen_server();
+
+			const response = await fetch(`http://${test_server_info.hostname}:${test_server_info.port}/echo/hello_world.foo`, {
+				method: 'GET'
+			});
+
+			const body = await response.text();
+
+			asserts.assert(response.ok);
+			asserts.assert(body);
+			asserts.assertEquals(body, 'foo');
+		} finally {
+			Deno.chdir(cwd);
+			Deno.env.delete('SERVERUS_HANDLERS');
+			if (old_handlers) {
+				Deno.env.set('SERVERUS_HANDLERS', old_handlers);
+			}
+			if (test_server_info) {
+				await test_server_info?.server?.stop();
+			}
+		}
+	}
+});