import * as path from 'path'; import * as fs from 'fs'; import { rollup } from 'rollup'; import virtual from '@rollup/plugin-virtual'; import glob from 'tiny-glob/sync.js'; import { clear_loops, flush, set_now, set_raf } from '../../internal'; import { assert, showOutput, loadConfig, loadSvelte, cleanRequireCache, env, setupHtmlEqual, mkdirp } from '../helpers'; let svelte$; let svelte; let compileOptions = null; let compile = null; const sveltePath = process.cwd().split('\\').join('/'); let unhandled_rejection = false; function unhandledRejection_handler(err) { unhandled_rejection = err; } describe('runtime', () => { before(() => { process.on('unhandledRejection', unhandledRejection_handler); svelte = loadSvelte(false); svelte$ = loadSvelte(true); require.extensions['.svelte'] = function(module, filename) { const options = Object.assign({ filename }, compileOptions); const { js: { code } } = compile(fs.readFileSync(filename, 'utf-8').replace(/\r/g, ''), options); return module._compile(code, filename); }; return setupHtmlEqual(); }); after(() => process.removeListener('unhandledRejection', unhandledRejection_handler)); const failed = new Set(); function runTest(dir, hydrate, from_ssr_html) { if (dir[0] === '.') return; const config = loadConfig(`${__dirname}/samples/${dir}/_config.js`); const solo = config.solo || /\.solo/.test(dir); if (hydrate && config.skip_if_hydrate) return; if (hydrate && from_ssr_html && config.skip_if_hydrate_from_ssr) return; if (solo && process.env.CI) { throw new Error('Forgot to remove `solo: true` from test'); } const testName = `${dir} ${hydrate ? `(with hydration${from_ssr_html ? ' from ssr rendered html' : ''})` : ''}`; (config.skip ? it.skip : solo ? it.only : it)(testName, () => { if (failed.has(dir)) { // this makes debugging easier, by only printing compiled output once throw new Error('skipping test, already failed'); } unhandled_rejection = null; compile = (config.preserveIdentifiers ? svelte : svelte$).compile; const cwd = path.resolve(`${__dirname}/samples/${dir}`); compileOptions = config.compileOptions || {}; compileOptions.format = 'cjs'; compileOptions.sveltePath = sveltePath; compileOptions.hydratable = hydrate; compileOptions.immutable = config.immutable; compileOptions.accessors = 'accessors' in config ? config.accessors : true; cleanRequireCache(); let mod; let SvelteComponent; let unintendedError = null; const window = env(); glob('**/*.svelte', { cwd }).forEach(file => { if (file[0] === '_') return; const dir = `${cwd}/_output/${hydrate ? 'hydratable' : 'normal'}`; const out = `${dir}/${file.replace(/\.svelte$/, '.js')}`; if (fs.existsSync(out)) { fs.unlinkSync(out); } mkdirp(dir); try { const { js } = compile( fs.readFileSync(`${cwd}/${file}`, 'utf-8').replace(/\r/g, ''), { ...compileOptions, filename: file } ); fs.writeFileSync(out, js.code); } catch (err) { // do nothing } }); return Promise.resolve() .then(() => { // hack to support transition tests clear_loops(); const raf = { time: 0, callback: null, tick: now => { raf.time = now; if (raf.callback) raf.callback(); } }; set_now(() => raf.time); set_raf(cb => { raf.callback = () => { raf.callback = null; cb(raf.time); flush(); }; }); try { mod = require(`./samples/${dir}/main.svelte`); SvelteComponent = mod.default; } catch (err) { showOutput(cwd, compileOptions, compile); // eslint-disable-line no-console throw err; } // Put things we need on window for testing window.SvelteComponent = SvelteComponent; const target = window.document.querySelector('main'); if (hydrate && from_ssr_html) { // ssr into target compileOptions.generate = 'ssr'; cleanRequireCache(); const SsrSvelteComponent = require(`./samples/${dir}/main.svelte`).default; const { html } = SsrSvelteComponent.render(config.props); target.innerHTML = html; delete compileOptions.generate; } else { target.innerHTML = ''; } if (config.before_test) config.before_test(); const warnings = []; const warn = console.warn; console.warn = warning => { warnings.push(warning); }; const options = Object.assign({}, { target, hydrate, props: config.props, intro: config.intro }, config.options || {}); const component = new SvelteComponent(options); console.warn = warn; if (config.error) { unintendedError = true; throw new Error('Expected a runtime error'); } if (config.warnings) { assert.deepEqual(warnings, config.warnings); } else if (warnings.length) { unintendedError = true; throw new Error('Received unexpected warnings'); } if (config.html) { assert.htmlEqual(target.innerHTML, config.html); } if (config.test) { return Promise.resolve(config.test({ assert, component, mod, target, window, raf, compileOptions })).then(() => { component.$destroy(); if (unhandled_rejection) { throw unhandled_rejection; } }); } else { component.$destroy(); assert.htmlEqual(target.innerHTML, ''); if (unhandled_rejection) { throw unhandled_rejection; } } }) .catch(err => { if (config.error && !unintendedError) { if (typeof config.error === 'function') { config.error(assert, err); } else { assert.equal(err.message, config.error); } } else { throw err; } }).catch(err => { failed.add(dir); showOutput(cwd, compileOptions, compile); // eslint-disable-line no-console throw err; }) .catch(err => { // print a clickable link to open the directory err.stack += `\n\ncmd-click: ${path.relative(process.cwd(), cwd)}/main.svelte`; throw err; }) .then(() => { if (config.show) { showOutput(cwd, compileOptions, compile); } flush(); if (config.after_test) config.after_test(); }); }); } fs.readdirSync(`${__dirname}/samples`).forEach(dir => { runTest(dir, false); runTest(dir, true, false); runTest(dir, true, true); }); async function create_component(src = '
') { const { js } = svelte$.compile(src, { format: 'esm', name: 'SvelteComponent', dev: true }); const bundle = await rollup({ input: 'main.js', plugins: [ virtual({ 'main.js': js.code }), { name: 'svelte-packages', resolveId: (importee) => { if (importee.startsWith('svelte/')) { return importee.replace('svelte', process.cwd()) + '/index.mjs'; } } } ] }); const result = await bundle.generate({ format: 'iife', name: 'App' }); return eval( `(function () { ${result.output[0].code}; return App; }())` ); } it('fails if options.target is missing in dev mode', async () => { const App = await create_component(); assert.throws(() => { new App(); }, /'target' is a required option/); }); it('fails if options.hydrate is true but the component is non-hydratable', async () => { const App = await create_component(); assert.throws(() => { new App({ target: { childNodes: [] }, hydrate: true }); }, /options.hydrate only works if the component was compiled with the `hydratable: true` option/); }); });