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svelte/test/hydration/index.js

103 lines
2.1 KiB

import * as assert from 'assert';
import * as path from 'path';
import * as fs from 'fs';
import {
showOutput,
loadConfig,
loadSvelte,
env,
setupHtmlEqual
} from '../helpers.js';
let compileOptions = null;
const sveltePath = process.cwd();
describe('hydration', () => {
before(() => {
const svelte = loadSvelte();
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require.extensions['.svelte'] = function(module, filename) {
const options = Object.assign(
{
filename,
hydratable: true,
format: 'cjs',
sveltePath
},
compileOptions
);
const { js } = svelte.compile(fs.readFileSync(filename, 'utf-8'), options);
return module._compile(js.code, filename);
};
return setupHtmlEqual();
});
function runTest(dir) {
if (dir[0] === '.') return;
const config = loadConfig(`./hydration/samples/${dir}/_config.js`);
if (config.solo && process.env.CI) {
throw new Error('Forgot to remove `solo: true` from test');
}
(config.skip ? it.skip : config.solo ? it.only : it)(dir, () => {
const cwd = path.resolve(`test/hydration/samples/${dir}`);
compileOptions = config.compileOptions || {};
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const window = env();
try {
global.window = window;
let SvelteComponent;
try {
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SvelteComponent = require(`${cwd}/main.svelte`).default;
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} catch (err) {
throw err;
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}
const target = window.document.body;
target.innerHTML = fs.readFileSync(`${cwd}/_before.html`, 'utf-8');
const snapshot = config.snapshot ? config.snapshot(target) : {};
const component = new SvelteComponent({
target,
hydrate: true,
props: config.props
});
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assert.htmlEqual(target.innerHTML, fs.readFileSync(`${cwd}/_after.html`, 'utf-8'));
if (config.test) {
config.test(assert, target, snapshot, component, window);
} else {
component.$destroy();
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assert.equal(target.innerHTML, '');
}
} catch (err) {
showOutput(cwd, {
hydratable: true
});
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throw err;
}
if (config.show) showOutput(cwd, {
hydratable: true
});
});
}
fs.readdirSync('test/hydration/samples').forEach(dir => {
runTest(dir, null);
});
});