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svelte/test/runtime/index.js

256 lines
6.3 KiB

import assert from "assert";
import * as path from "path";
import * as fs from "fs";
import * as acorn from "acorn";
import { transitionManager } from "../../shared.js";
import {
showOutput,
loadConfig,
loadSvelte,
env,
setupHtmlEqual,
spaces
} from "../helpers.js";
let svelte;
let compileOptions = null;
function getName(filename) {
const base = path.basename(filename).replace(".html", "");
return base[0].toUpperCase() + base.slice(1);
}
const nodeVersionMatch = /^v(\d)/.exec(process.version);
const legacy = +nodeVersionMatch[1] < 6;
const babelrc = require("../../package.json").babel;
const Object_assign = Object.assign;
describe("runtime", () => {
before(() => {
svelte = loadSvelte(true);
require.extensions[".html"] = function(module, filename) {
const options = Object.assign(
{ filename, name: getName(filename) },
compileOptions
);
let { code } = svelte.compile(fs.readFileSync(filename, "utf-8"), options);
if (legacy) code = require('babel-core').transform(code, babelrc).code;
return module._compile(code, filename);
};
return setupHtmlEqual();
});
const failed = new Set();
function runTest(dir, shared, hydrate) {
if (dir[0] === ".") return;
const config = loadConfig(`./runtime/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} (${shared ? 'shared' : 'inline'} helpers)`, () => {
if (failed.has(dir)) {
// this makes debugging easier, by only printing compiled output once
throw new Error('skipping test, already failed');
}
const cwd = path.resolve(`test/runtime/samples/${dir}`);
compileOptions = config.compileOptions || {};
compileOptions.shared = shared;
compileOptions.hydratable = hydrate;
compileOptions.dev = config.dev;
// check that no ES2015+ syntax slipped in
if (!config.allowES2015) {
try {
const source = fs.readFileSync(
`test/runtime/samples/${dir}/main.html`,
"utf-8"
);
const { code } = svelte.compile(source, compileOptions);
const startIndex = code.indexOf("function create_main_fragment"); // may change!
if (startIndex === -1)
throw new Error("missing create_main_fragment");
const es5 =
code.slice(0, startIndex).split('\n').map(x => spaces(x.length)).join('\n') +
code.slice(startIndex).replace(/export default .+/, "");
acorn.parse(es5, { ecmaVersion: 5 });
} catch (err) {
failed.add(dir);
showOutput(cwd, { shared }); // eslint-disable-line no-console
throw err;
}
}
Object.keys(require.cache)
.filter(x => x.endsWith(".html"))
.forEach(file => {
delete require.cache[file];
});
let SvelteComponent;
let unintendedError = null;
return env()
.then(window => {
// set of hacks to support transition tests
transitionManager.running = false;
transitionManager.transitions = [];
const raf = {
time: 0,
callback: null,
tick: now => {
raf.time = now;
if (raf.callback) raf.callback();
}
};
window.performance = { now: () => raf.time };
global.requestAnimationFrame = cb => {
let called = false;
raf.callback = () => {
if (!called) {
called = true;
cb();
}
};
};
global.window = window;
try {
SvelteComponent = require(`./samples/${dir}/main.html`).default;
} catch (err) {
showOutput(cwd, { shared }); // eslint-disable-line no-console
throw err;
}
let usedObjectAssign = false;
Object.assign = () => {
usedObjectAssign = true;
};
global.window = window;
// Put the constructor on window for testing
window.SvelteComponent = SvelteComponent;
const target = window.document.querySelector("main");
const warnings = [];
const warn = console.warn;
console.warn = warning => {
warnings.push(warning);
};
const component = new SvelteComponent({
target,
hydrate,
data: config.data
});
Object.assign = Object_assign;
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) {
config.test(assert, component, target, window, raf);
} else {
component.destroy();
assert.equal(target.innerHTML, "");
}
if (usedObjectAssign) {
throw new Error(
"cannot use Object.assign in generated code, as it is not supported everywhere"
);
}
})
.catch(err => {
Object.assign = Object_assign;
if (config.error && !unintendedError) {
config.error(assert, err);
} else {
failed.add(dir);
showOutput(cwd, { shared }); // eslint-disable-line no-console
throw err;
}
})
.then(() => {
if (config.show) showOutput(cwd, { shared });
});
});
}
const shared = path.resolve("shared.js");
fs.readdirSync("test/runtime/samples").forEach(dir => {
runTest(dir, shared, false);
runTest(dir, shared, true);
runTest(dir, null, false);
});
it("fails if options.target is missing in dev mode", () => {
const { code } = svelte.compile(`<div></div>`, {
format: "iife",
name: "SvelteComponent",
dev: true
});
const SvelteComponent = eval(
`(function () { ${code}; return SvelteComponent; }())`
);
assert.throws(() => {
new SvelteComponent();
}, /'target' is a required option/);
});
it("fails if options.hydrate is true but the component is non-hydratable", () => {
const { code } = svelte.compile(`<div></div>`, {
format: "iife",
name: "SvelteComponent",
dev: true
});
const SvelteComponent = eval(
`(function () { ${code}; return SvelteComponent; }())`
);
assert.throws(() => {
new SvelteComponent({
target: {},
hydrate: true
});
}, /options.hydrate only works if the component was compiled with the `hydratable: true` option/);
});
});