mirror of https://github.com/sveltejs/svelte
Rich Harris
7 years ago
parent
b2b3588cdd
commit
6fd069922b
@ -1,164 +1,147 @@
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import assert from 'assert';
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import * as fs from 'fs';
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import {parse} from 'acorn';
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import {addLineNumbers, env, normalizeHtml, svelte} from '../helpers.js';
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function tryRequire(file) {
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try {
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const mod = require(file);
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return mod.default || mod;
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} catch (err) {
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if (err.code !== 'MODULE_NOT_FOUND') throw err;
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return null;
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}
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}
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function normalizeWarning(warning) {
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warning.frame = warning.frame.replace(/^\n/, '').
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replace(/^\t+/gm, '').
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replace(/\s+$/gm, '');
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delete warning.filename;
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delete warning.toString;
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return warning;
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}
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function checkCodeIsValid(code) {
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try {
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parse(code);
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} catch (err) {
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console.error(addLineNumbers(code));
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throw new Error(err.message);
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}
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}
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import {svelte} from '../helpers.js';
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describe.only('preprocess', () => {
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fs.readdirSync('test/preprocess/samples').forEach(dir => {
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if (dir[0] === '.') return;
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it('preprocesses entire component', () => {
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const source = `
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<h1>Hello __NAME__!</h1>
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`;
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const expected = `
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<h1>Hello world!</h1>
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`;
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return svelte.preprocess(source, {
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markup: ({ content }) => {
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return {
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code: content.replace('__NAME__', 'world')
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};
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}
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}).then(processed => {
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assert.equal(processed.toString(), expected);
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});
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});
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// add .solo to a sample directory name to only run that test
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const solo = /\.solo/.test(dir);
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const skip = /\.skip/.test(dir);
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it('preprocesses style', () => {
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const source = `
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<div class='brand-color'>$brand</div>
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if (solo && process.env.CI) {
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throw new Error('Forgot to remove `solo: true` from test');
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<style>
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.brand-color {
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color: $brand;
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}
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</style>
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`;
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(solo ? it.only : skip ? it.skip : it)(dir, () => {
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const config = tryRequire(`./samples/${dir}/_config.js`) || {};
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const input = fs.existsSync(`test/preprocess/samples/${dir}/input.pug`) ?
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read(`test/preprocess/samples/${dir}/input.pug`) :
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read(`test/preprocess/samples/${dir}/input.html`);
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return svelte.preprocess(input, config)
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.then(processed => processed.toString())
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.then(processed => {
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const expectedWarnings = (config.warnings || []).map(
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normalizeWarning);
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const domWarnings = [];
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const ssrWarnings = [];
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const dom = svelte.compile(
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processed,
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Object.assign(config, {
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format: 'iife',
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name: 'SvelteComponent',
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onwarn: warning => {
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domWarnings.push(warning);
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},
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})
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);
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const ssr = svelte.compile(
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processed,
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Object.assign(config, {
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format: 'iife',
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generate: 'ssr',
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name: 'SvelteComponent',
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onwarn: warning => {
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ssrWarnings.push(warning);
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},
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})
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);
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// check the code is valid
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checkCodeIsValid(dom.code);
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checkCodeIsValid(ssr.code);
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assert.equal(dom.css, ssr.css);
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assert.deepEqual(
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domWarnings.map(normalizeWarning),
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ssrWarnings.map(normalizeWarning)
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);
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assert.deepEqual(domWarnings.map(normalizeWarning), expectedWarnings);
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const expected = {
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html: read(`test/preprocess/samples/${dir}/expected.html`),
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css: read(`test/preprocess/samples/${dir}/expected.css`),
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};
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const expected = `
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<div class='brand-color'>$brand</div>
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if (expected.css !== null) {
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fs.writeFileSync(`test/preprocess/samples/${dir}/_actual.css`,
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dom.css);
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assert.equal(dom.css.replace(/svelte-\d+/g, 'svelte-xyz'),
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expected.css);
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<style>
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.brand-color {
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color: purple;
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}
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</style>
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`;
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// verify that the right elements have scoping selectors
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if (expected.html !== null) {
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const window = env();
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// dom
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try {
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const Component = eval(
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`(function () { ${dom.code}; return SvelteComponent; }())`
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);
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const target = window.document.querySelector('main');
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new Component({target, data: config.data});
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const html = target.innerHTML;
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fs.writeFileSync(`test/preprocess/samples/${dir}/_actual.html`,
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html);
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assert.equal(
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normalizeHtml(window,
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html.replace(/svelte-\d+/g, 'svelte-xyz')),
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normalizeHtml(window, expected.html)
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);
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} catch (err) {
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console.log(dom.code);
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throw err;
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return svelte.preprocess(source, {
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style: ({ content }) => {
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return {
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code: content.replace('$brand', 'purple')
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};
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}
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}).then(processed => {
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assert.equal(processed.toString(), expected);
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});
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});
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// ssr
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try {
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const component = eval(
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`(function () { ${ssr.code}; return SvelteComponent; }())`
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);
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assert.equal(
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normalizeHtml(
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window,
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component.render(config.data).
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replace(/svelte-\d+/g, 'svelte-xyz')
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),
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normalizeHtml(window, expected.html)
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);
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} catch (err) {
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console.log(ssr.code);
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throw err;
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it('preprocesses style asynchronously', () => {
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const source = `
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<div class='brand-color'>$brand</div>
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<style>
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.brand-color {
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color: $brand;
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}
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</style>
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`;
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const expected = `
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<div class='brand-color'>$brand</div>
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<style>
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.brand-color {
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color: purple;
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}
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</style>
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`;
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return svelte.preprocess(source, {
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style: ({ content }) => {
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return Promise.resolve({
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code: content.replace('$brand', 'purple')
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});
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}
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}).then(processed => {
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assert.equal(processed.toString(), expected);
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});
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});
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});
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function read(file) {
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try {
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return fs.readFileSync(file, 'utf-8');
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} catch (err) {
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return null;
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it('preprocesses script', () => {
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const source = `
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<script>
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console.log(__THE_ANSWER__);
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</script>
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`;
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const expected = `
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<script>
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console.log(42);
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</script>
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`;
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return svelte.preprocess(source, {
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script: ({ content }) => {
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return {
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code: content.replace('__THE_ANSWER__', '42')
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};
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}
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}).then(processed => {
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assert.equal(processed.toString(), expected);
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});
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});
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it('parses attributes', () => {
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const source = `
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<style type='text/scss' bool></style>
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`;
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return svelte.preprocess(source, {
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style: ({ attributes }) => {
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assert.deepEqual(attributes, {
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type: 'text/scss',
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bool: true
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});
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}
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}
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});
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});
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it('ignores null/undefined returned from preprocessor', () => {
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const source = `
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<script>
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console.log('ignore me');
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</script>
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`;
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const expected = `
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<script>
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console.log('ignore me');
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</script>
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`;
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return svelte.preprocess(source, {
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script: () => null
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}).then(processed => {
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assert.equal(processed.toString(), expected);
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});
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});
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});
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