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Server.test.js
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Server.test.js
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'use strict';
const { relative, sep } = require('path');
const webpack = require('webpack');
const sockjs = require('sockjs/lib/transport');
const { noop } = require('webpack-dev-middleware/lib/util');
const Server = require('../../lib/Server');
const config = require('../fixtures/simple-config/webpack.config');
const port = require('../ports-map').Server;
jest.mock('sockjs/lib/transport');
const baseDevConfig = {
port,
quiet: true,
};
describe('Server', () => {
describe('sockjs', () => {
it('add decorateConnection', () => {
expect(typeof sockjs.Session.prototype.decorateConnection).toEqual(
'function'
);
});
});
describe('addEntries', () => {
it('add hot option', (done) => {
const compiler = webpack(config);
const server = new Server(
compiler,
Object.assign({}, baseDevConfig, {
hot: true,
})
);
expect(
server.middleware.context.compiler.options.entry.map((p) => {
return relative('.', p).split(sep);
})
).toMatchSnapshot();
expect(server.middleware.context.compiler.options.plugins).toEqual([
new webpack.HotModuleReplacementPlugin(),
]);
compiler.hooks.done.tap('webpack-dev-server', () => {
server.close(done);
});
compiler.run(() => {});
});
it('add hotOnly option', (done) => {
const compiler = webpack(config);
const server = new Server(
compiler,
Object.assign({}, baseDevConfig, {
hotOnly: true,
})
);
expect(
server.middleware.context.compiler.options.entry.map((p) => {
return relative('.', p).split(sep);
})
).toMatchSnapshot();
expect(server.middleware.context.compiler.options.plugins).toEqual([
new webpack.HotModuleReplacementPlugin(),
]);
compiler.hooks.done.tap('webpack-dev-server', () => {
server.close(done);
});
compiler.run(() => {});
});
});
// issue: https://github.com/webpack/webpack-dev-server/issues/1724
describe('express.static.mine.types', () => {
it("should success even if mine.types doesn't exist", (done) => {
jest.mock('express', () => {
const data = jest.requireActual('express');
const { static: st } = data;
const { mime } = st;
delete mime.types;
expect(typeof mime.types).toEqual('undefined');
return Object.assign(data, {
static: Object.assign(st, {
mime,
}),
});
});
const compiler = webpack(config);
const server = new Server(compiler, baseDevConfig);
compiler.hooks.done.tap('webpack-dev-server', (s) => {
const output = server.getStats(s);
expect(output.errors.length).toEqual(0);
server.close(done);
});
compiler.run(() => {});
server.listen(port, 'localhost');
});
});
describe('Invalidate Callback', () => {
describe('Testing callback functions on calling invalidate without callback', () => {
it('should be `noop` (the default callback function)', (done) => {
const compiler = webpack(config);
const server = new Server(compiler, baseDevConfig);
server.invalidate();
expect(server.middleware.context.callbacks[0]).toBe(noop);
compiler.hooks.done.tap('webpack-dev-server', () => {
server.close(done);
});
compiler.run(() => {});
});
});
describe('Testing callback functions on calling invalidate with callback', () => {
it('should be `callback` function', (done) => {
const compiler = webpack(config);
const callback = jest.fn();
const server = new Server(compiler, baseDevConfig);
server.invalidate(callback);
expect(server.middleware.context.callbacks[0]).toBe(callback);
compiler.hooks.done.tap('webpack-dev-server', () => {
server.close(done);
});
compiler.run(() => {});
});
});
});
describe('WEBPACK_DEV_SERVER environment variable', () => {
const OLD_ENV = process.env;
beforeEach(() => {
// this is important - it clears the cache
jest.resetModules();
process.env = { ...OLD_ENV };
delete process.env.WEBPACK_DEV_SERVER;
});
afterEach(() => {
process.env = OLD_ENV;
});
it('should be present', () => {
expect(process.env.WEBPACK_DEV_SERVER).toBeUndefined();
require('../../lib/Server');
expect(process.env.WEBPACK_DEV_SERVER).toBe(true);
});
});
});