diff --git a/test/apps/with-sourcemaps-webpack/test.ts b/test/apps/with-sourcemaps-webpack/test.ts
index cb0a3ca..802fa05 100644
--- a/test/apps/with-sourcemaps-webpack/test.ts
+++ b/test/apps/with-sourcemaps-webpack/test.ts
@@ -1,34 +1,20 @@
-import * as puppeteer from 'puppeteer';
 import { build } from '../../../api';
 import * as assert from "assert";
-import { AppRunner } from '../AppRunner';
-import * as fs from "fs";
+import * as fs from 'fs';
 import * as path from "path";
 
-describe('with-sourcemaps-webpack', function() {
+describe('with-sourcemaps', function() {
 	this.timeout(10000);
 
-	let runner: AppRunner;
-	let page: puppeteer.Page;
-	let base: string;
-
-	// helpers
-	let start: () => Promise<void>;
-	let prefetchRoutes: () => Promise<void>;
-	let prefetch: (href: string) => Promise<void>;
-	let goto: (href: string) => Promise<void>;
-
 	// hooks
 	before(async () => {
 		await build({ cwd: __dirname, bundler: 'webpack' });
-
-		runner = new AppRunner(__dirname, '__sapper__/build/server/server.js');
-		({ base, page, start, prefetchRoutes, prefetch, goto } = await runner.start());
 	});
 
 	it('does not put sourcemap files in service worker shell', async () => {
-		const serviceWorker = await import(`${__dirname}/__sapper__/service-worker.js`);
-		const shell: string[] = serviceWorker.shell;
+		const service_worker_source = fs.readFileSync(`${__dirname}/src/node_modules/@sapper/service-worker.js`, 'utf-8');
+		const shell_source = /shell = (\[[\s\S]+?\])/.exec(service_worker_source)[1];
+		const shell = JSON.parse(shell_source);
 
 		assert.equal(shell.filter(_ => _.endsWith('.map')).length, 0,
 			'sourcemap files are not cached in SW');
@@ -37,7 +23,4 @@ describe('with-sourcemaps-webpack', function() {
 		const sourcemapFiles = fs.readdirSync(clientShellDir).filter(_ => _.endsWith('.map'));
 		assert.ok(sourcemapFiles.length > 0, 'sourcemap files exist');
 	});
-
-	after(() => runner.end());
-
 });
\ No newline at end of file