import * as jsdom from 'jsdom'; import * as assert from 'assert'; import * as glob from 'tiny-glob/sync.js'; import * as fs from 'fs'; import * as colors from 'kleur'; // for coverage purposes, we need to test source files, // but for sanity purposes, we need to test dist files export function loadSvelte(test) { process.env.TEST = test ? 'true' : ''; const resolved = require.resolve('../compiler.js'); delete require.cache[resolved]; return require(resolved); } export const svelte = loadSvelte(); export function exists(path) { try { fs.statSync(path); return true; } catch (err) { return false; } } export function tryToLoadJson(file) { try { return JSON.parse(fs.readFileSync(file, 'utf-8')); } catch (err) { if (err.code !== 'ENOENT') throw err; return null; } } export function tryToReadFile(file) { try { return fs.readFileSync(file, 'utf-8'); } catch (err) { if (err.code !== 'ENOENT') throw err; return null; } } const virtualConsole = new jsdom.VirtualConsole(); virtualConsole.sendTo(console); const window = new jsdom.JSDOM('
', {virtualConsole}).window; global.document = window.document; global.navigator = window.navigator; global.getComputedStyle = window.getComputedStyle; global.requestAnimationFrame = null; // placeholder, filled in using set_raf global.window = window; // add missing ecmascript globals to window for (const key of Object.getOwnPropertyNames(global)) { window[key] = window[key] || global[key]; } // implement mock scroll window.scrollTo = function(pageXOffset, pageYOffset) { window.pageXOffset = pageXOffset; window.pageYOffset = pageYOffset; }; export function env() { window.document.title = ''; window.document.body.innerHTML = '
'; return window; } function cleanChildren(node) { let previous = null; // sort attributes const attributes = Array.from(node.attributes).sort((a, b) => { return a.name < b.name ? -1 : 1; }); attributes.forEach(attr => { node.removeAttribute(attr.name); }); attributes.forEach(attr => { node.setAttribute(attr.name, attr.value); }); // recurse [...node.childNodes].forEach(child => { if (child.nodeType === 3) { // text if ( node.namespaceURI === 'http://www.w3.org/2000/svg' && node.tagName !== 'text' && node.tagName !== 'tspan' ) { node.removeChild(child); } child.data = child.data.replace(/\s+/g, '\n'); if (previous && previous.nodeType === 3) { previous.data += child.data; previous.data = previous.data.replace(/\s+/g, '\n'); node.removeChild(child); child = previous; } } else { cleanChildren(child); } previous = child; }); // collapse whitespace if (node.firstChild && node.firstChild.nodeType === 3) { node.firstChild.data = node.firstChild.data.replace(/^\s+/, ''); if (!node.firstChild.data) node.removeChild(node.firstChild); } if (node.lastChild && node.lastChild.nodeType === 3) { node.lastChild.data = node.lastChild.data.replace(/\s+$/, ''); if (!node.lastChild.data) node.removeChild(node.lastChild); } } export function normalizeHtml(window, html) { try { const node = window.document.createElement('div'); node.innerHTML = html .replace(//g, '') .replace(/>[\s\r\n]+<') .trim(); cleanChildren(node); return node.innerHTML.replace(/<\/?noscript\/?>/g, ''); } catch (err) { throw new Error(`Failed to normalize HTML:\n${html}`); } } export function setupHtmlEqual() { const window = env(); assert.htmlEqual = (actual, expected, message) => { assert.deepEqual( normalizeHtml(window, actual), normalizeHtml(window, expected), message ); }; } export function loadConfig(file) { try { const resolved = require.resolve(file); delete require.cache[resolved]; const config = require(resolved); return config.default || config; } catch (err) { if (err.code === 'MODULE_NOT_FOUND') { return {}; } throw err; } } export function addLineNumbers(code) { return code .split('\n') .map((line, i) => { i = String(i + 1); while (i.length < 3) i = ` ${i}`; return ( colors.gray(` ${i}: `) + line.replace(/^\t+/, match => match.split('\t').join(' ')) ); }) .join('\n'); } export function showOutput(cwd, options = {}, compile = svelte.compile) { glob('**/*.svelte', { cwd }).forEach(file => { if (file[0] === '_') return; try { const { js } = compile( fs.readFileSync(`${cwd}/${file}`, 'utf-8'), Object.assign(options, { filename: file }) ); console.log( // eslint-disable-line no-console `\n>> ${colors.cyan().bold(file)}\n${addLineNumbers(js.code)}\n<< ${colors.cyan().bold(file)}` ); } catch (err) { console.log(`failed to generate output: ${err.message}`); } }); } export function shouldUpdateExpected() { return process.argv.includes('--update'); } export function spaces(i) { let result = ''; while (i--) result += ' '; return result; } // fake timers const original_set_timeout = global.setTimeout; export function useFakeTimers() { const callbacks = []; global.setTimeout = function(fn) { callbacks.push(fn); }; return { flush() { callbacks.forEach(fn => fn()); callbacks.splice(0, callbacks.length); }, removeFakeTimers() { callbacks.splice(0, callbacks.length); global.setTimeout = original_set_timeout; } }; }