Improve internal API

test/apps/errors/test.ts

@@ -0,0 +1,113 @@
+import * as assert from 'assert';
+import * as puppeteer from 'puppeteer';
+import { build } from '../../../api';
+import { AppRunner } from '../AppRunner';
+import { wait } from '../../utils';
+
+describe('errors', function() {
+	this.timeout(10000);
+
+	let runner: AppRunner;
+	let page: puppeteer.Page;
+	let base: string;
+
+	// helpers
+	let start: () => Promise<void>;
+	let prefetchRoutes: () => Promise<void>;
+
+	// hooks
+	before(async () => {
+		await build({ cwd: __dirname });
+
+		runner = new AppRunner(__dirname, '__sapper__/build/server/server.js');
+		({ base, page, start, prefetchRoutes } = await runner.start());
+	});
+
+	after(() => runner.end());
+
+	it('handles missing route on server', async () => {
+		await page.goto(`${base}/nope`);
+
+		assert.equal(
+			await page.$eval('h1', node => node.textContent),
+			'404'
+		);
+	});
+
+	it('handles missing route on client', async () => {
+		await page.goto(base);
+		await start();
+
+		await page.click('[href="nope"]');
+		await wait(50);
+
+		assert.equal(
+			await page.$eval('h1', node => node.textContent),
+			'404'
+		);
+	});
+
+	it('handles explicit 4xx on server', async () => {
+		await page.goto(`${base}/blog/nope`);
+
+		assert.equal(
+			await page.$eval('h1', node => node.textContent),
+			'404'
+		);
+	});
+
+	it('handles explicit 4xx on client', async () => {
+		await page.goto(base);
+		await start();
+		await prefetchRoutes();
+
+		await page.click('[href="blog/nope"]');
+		await wait(50);
+
+		assert.equal(
+			await page.$eval('h1', node => node.textContent),
+			'404'
+		);
+	});
+
+	it('handles error on server', async () => {
+		await page.goto(`${base}/throw`);
+
+		assert.equal(
+			await page.$eval('h1', node => node.textContent),
+			'500'
+		);
+	});
+
+	it('handles error on client', async () => {
+		await page.goto(base);
+		await start();
+		await prefetchRoutes();
+
+		await page.click('[href="throw"]');
+		await wait(50);
+
+		assert.equal(
+			await page.$eval('h1', node => node.textContent),
+			'500'
+		);
+	});
+
+	it('does not serve error page for explicit non-page errors', async () => {
+		await page.goto(`${base}/nope.json`);
+
+		assert.equal(
+			await page.evaluate(() => document.body.textContent),
+			'nope'
+		);
+	});
+
+	it('does not serve error page for thrown non-page errors', async () => {
+		await page.goto(`${base}/throw.json`);
+
+		assert.equal(
+			await page.evaluate(() => document.body.textContent),
+			'oops'
+		);
+	});
+});