use nightmare for testing

test/app/.gitignore

@@ -3,3 +3,4 @@ node_modules
 .sapper
 yarn.lock
 cypress/screenshots
+templates/.*

test/app/templates/2xx.html

@@ -10,9 +10,9 @@
 	<link rel='icon' type='image/png' href='/favicon.png'>
 
 	<script>
-		if ('serviceWorker' in navigator) {
-			navigator.serviceWorker.register('/service-worker.js');
-		}
+		// if ('serviceWorker' in navigator) {
+		// 	navigator.serviceWorker.register('/service-worker.js');
+		// }
 	</script>
 
 	<!-- Sapper generates a <style> tag containing critical CSS

test/app/templates/main.js

@@ -3,8 +3,4 @@ import { init } from '__app__';
 // `routes` is an array of route objects injected by Sapper
 init(document.querySelector('#sapper'), __routes__);
 
-// if (__dev__) {
-// 	// Enable hot-module reloading
-// 	import('sapper/webpack/hmr');
-// 	if (module.hot) module.hot.accept();
-// }
+window.READY = true;

test/common/test.js

@@ -0,0 +1,210 @@
+const fs = require('fs');
+const path = require('path');
+const assert = require('assert');
+const express = require('express');
+const serve = require('serve-static');
+const Nightmare = require('nightmare');
+const getPort = require('get-port');
+const fetch = require('node-fetch');
+
+run('production');
+run('development');
+
+function run(env) {
+	describe(`env=${env}`, function () {
+		this.timeout(30000);
+
+		let PORT;
+		let server;
+		let nightmare;
+		let middleware;
+		let capture;
+
+		let base;
+
+		function get(url) {
+			return new Promise((fulfil, reject) => {
+				const req = {
+					url,
+					method: 'GET'
+				};
+
+				const result = {
+					headers: {},
+					body: ''
+				};
+
+				const res = {
+					set: (headers, value) => {
+						if (typeof headers === 'string') {
+							return res.set({ [headers]: value });
+						}
+
+						Object.assign(result.headers, headers);
+					},
+
+					status: code => {
+						result.status = code;
+					},
+
+					write: data => {
+						result.body += data;
+					},
+
+					end: data => {
+						result.body += data;
+						fulfil(result);
+					}
+				};
+
+				middleware(req, res, () => {
+					fulfil(result);
+				});
+			});
+		}
+
+		before(async () => {
+			process.chdir(path.resolve(__dirname, '../app'));
+
+			process.env.NODE_ENV = env;
+
+			if (env === 'production') {
+				const cli = path.resolve(__dirname, '../../cli/index.js');
+				await exec(`${cli} build`);
+			}
+
+			const resolved = require.resolve('../..');
+			delete require.cache[resolved];
+			const sapper = require(resolved);
+
+			PORT = await getPort();
+			base = `http://localhost:${PORT}`;
+
+			global.fetch = (url, opts) => {
+				if (url[0] === '/') url = `${base}${url}`;
+				return fetch(url, opts);
+			};
+
+			let captured;
+			capture = async fn => {
+				const result = captured = [];
+				await fn();
+				captured = null;
+				return result;
+			};
+
+			app = express();
+
+			app.use(serve('assets'));
+
+			app.use((req, res, next) => {
+				if (captured) captured.push(req);
+				next();
+			});
+
+			middleware = sapper();
+			app.use(middleware);
+
+			return new Promise((fulfil, reject) => {
+				server = app.listen(PORT, err => {
+					if (err) reject(err);
+					else fulfil();
+				});
+			});
+		});
+
+		after(() => {
+			server.close();
+			middleware.close();
+
+			// give a chance to clean up
+			return new Promise(fulfil => setTimeout(fulfil, 500));
+		});
+
+		describe('basic functionality', () => {
+			beforeEach(() => {
+				nightmare = new Nightmare();
+
+				nightmare.on('console', (type, ...args) => {
+					console[type](...args);
+				});
+			});
+
+			afterEach(async () => {
+				await nightmare.end();
+			});
+
+			it('serves /', async () => {
+				const title = await nightmare
+					.goto(base)
+					.evaluate(() => document.querySelector('h1').textContent);
+
+				assert.equal(title, 'Great success!');
+			});
+
+			it('serves static route', async () => {
+				const title = await nightmare
+					.goto(`${base}/about`)
+					.evaluate(() => document.querySelector('h1').textContent);
+
+				assert.equal(title, 'About this site');
+			});
+
+			it('serves dynamic route', async () => {
+				const title = await nightmare
+					.goto(`${base}/blog/what-is-sapper`)
+					.evaluate(() => document.querySelector('h1').textContent);
+
+				assert.equal(title, 'What is Sapper?');
+			});
+
+			it('navigates to a new page without reloading', async () => {
+				await nightmare.goto(base);
+
+				const requests = await capture(async () => {
+					await nightmare.click('a[href="/about"]');
+				});
+
+				assert.equal(
+					await nightmare.path(),
+					'/about'
+				);
+
+				assert.equal(
+					await nightmare.evaluate(() => document.title),
+					'About'
+				);
+
+				assert.deepEqual(requests.map(r => r.url), []);
+			});
+		});
+
+		describe('headers', () => {
+			it('sets Content-Type and Link...preload headers', async () => {
+				const { headers } = await get('/');
+
+				assert.equal(
+					headers['Content-Type'],
+					'text/html'
+				);
+
+				assert.ok
+					(/<\/client\/main.\w+\.js\>;rel="preload";as="script", <\/client\/_.\d+.\w+.js>;rel="preload";as="script"/.test(headers['Link']),
+					headers['Link']
+				);
+			});
+		});
+	});
+}
+
+function exec(cmd) {
+	return new Promise((fulfil, reject) => {
+		require('child_process').exec(cmd, (err, stdout, stderr) => {
+			if (err) return reject(err);
+
+			process.stdout.write(stdout);
+			process.stderr.write(stderr);
+			fulfil();
+		});
+	});
+}

test/cypress/fixtures/example.json

@@ -1,5 +0,0 @@
-{
-  "name": "Using fixtures to represent data",
-  "email": "hello@cypress.io",
-  "body": "Fixtures are a great way to mock data for responses to routes"
-}

test/cypress/integration/dev.js

@@ -1,19 +0,0 @@
-describe('dev mode', () => {
-	beforeEach(() => {
-		cy.visit('/')
-	});
-
-	it('has the correct <h1>', () => {
-		cy.contains('h1', 'Great success!')
-	});
-
-	it('navigates to /about', () => {
-		cy.get('nav a').contains('about').click();
-		cy.url().should('include', '/about');
-	});
-
-	it('navigates to /blog', () => {
-		cy.get('nav a').contains('blog').click();
-		cy.url().should('include', '/blog');
-	});
-});

test/cypress/integration/prod.js

@@ -1,19 +0,0 @@
-describe('prod mode', () => {
-	beforeEach(() => {
-		cy.visit('/')
-	});
-
-	it('has the correct <h1>', () => {
-		cy.contains('h1', 'Great success!')
-	});
-
-	it('navigates to /about', () => {
-		cy.get('nav a').contains('about').click();
-		cy.url().should('include', '/about');
-	});
-
-	it('navigates to /blog', () => {
-		cy.get('nav a').contains('blog').click();
-		cy.url().should('include', '/blog');
-	});
-});

test/cypress/plugins/index.js

@@ -1,17 +0,0 @@
-// ***********************************************************
-// This example plugins/index.js can be used to load plugins
-//
-// You can change the location of this file or turn off loading
-// the plugins file with the 'pluginsFile' configuration option.
-//
-// You can read more here:
-// https://on.cypress.io/plugins-guide
-// ***********************************************************
-
-// This function is called when a project is opened or re-opened (e.g. due to
-// the project's config changing)
-
-module.exports = (on, config) => {
-  // `on` is used to hook into various events Cypress emits
-  // `config` is the resolved Cypress config
-}

test/cypress/support/commands.js

@@ -1,25 +0,0 @@
-// ***********************************************
-// This example commands.js shows you how to
-// create various custom commands and overwrite
-// existing commands.
-//
-// For more comprehensive examples of custom
-// commands please read more here:
-// https://on.cypress.io/custom-commands
-// ***********************************************
-//
-//
-// -- This is a parent command --
-// Cypress.Commands.add("login", (email, password) => { ... })
-//
-//
-// -- This is a child command --
-// Cypress.Commands.add("drag", { prevSubject: 'element'}, (subject, options) => { ... })
-//
-//
-// -- This is a dual command --
-// Cypress.Commands.add("dismiss", { prevSubject: 'optional'}, (subject, options) => { ... })
-//
-//
-// -- This is will overwrite an existing command --
-// Cypress.Commands.overwrite("visit", (originalFn, url, options) => { ... })

test/cypress/support/index.js

@@ -1,20 +0,0 @@
-// ***********************************************************
-// This example support/index.js is processed and
-// loaded automatically before your test files.
-//
-// This is a great place to put global configuration and
-// behavior that modifies Cypress.
-//
-// You can change the location of this file or turn off
-// automatically serving support files with the
-// 'supportFile' configuration option.
-//
-// You can read more here:
-// https://on.cypress.io/configuration
-// ***********************************************************
-
-// Import commands.js using ES2015 syntax:
-import './commands'
-
-// Alternatively you can use CommonJS syntax:
-// require('./commands')