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index.js
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import { mount } from '@vue/test-utils';
import Main from './components/Main';
import About from './components/views/About';
import Error from './components/views/Error';
import Hello from './components/views/Hello';
import Index from './components/views/Index';
import { createRouter } from '../src';
function init({ base = '', wildcard = true } = {}) {
const router = createRouter({
base,
routes: [
{ path: '/', component: Index, name: 'index' },
{ path: '/about', component: About, name: 'about' },
{ path: '/hello/:user_name', component: Hello, name: 'hello' },
{ path: '/greetings/:user_name', component: Hello, props: { title: 'Greetings' }, name: 'greetings' },
{ path: '/forbidden', component: Error, props: { code: 403 }, meta: { login_required: true } },
{ path: wildcard ? '*' : '/404', component: Error, props: { code: 404 } },
],
});
return mount(Main, { global: { plugins: [router] } });
}
test('index view is rendered initially', () => {
const wrapper = init();
expect(wrapper.find('#view').text()).toBe('Index page');
});
test('$router and $route objects are available in components', () => {
const wrapper = init();
expect(wrapper.vm.$route.name).toBe('index');
expect(wrapper.vm.$route.path).toBe('/');
expect(wrapper.vm.$route.query).toEqual({});
expect(wrapper.vm.$route.hash).toBe('');
expect(wrapper.vm.$route).toBe(wrapper.vm.$router.route);
expect(wrapper.findComponent(Index).vm.$router).toBe(wrapper.vm.$router);
expect(wrapper.findComponent(Index).vm.$route).toBe(wrapper.vm.$route);
});
test('reverse URL resolving works', () => {
const wrapper = init();
for (const [args, result] of [
[['index'], '/'],
[['hello', { user_name: 'test' }], '/hello/test'],
[['greetings', { search: 'abc&xyz', user_name: 'john' }], '/greetings/john?search=abc%26xyz'],
[['index', { answer: [42, 'qwerty'] }], '/?answer=42&answer=qwerty'],
]) {
expect(wrapper.vm.$router.resolve(...args)).toBe(result);
expect(wrapper.vm.$url(...args)).toBe(result);
}
});
test('history and location are properly managed on navigation', async () => {
// This test should be run before any other navigation tests, so that the numbers are correct.
// https://github.com/facebook/jest/issues/1224
const wrapper = init();
expect(history.length).toBe(1);
expect(location.pathname).toBe('/');
await wrapper.vm.$router.push('/');
expect(history.length).toBe(1);
await wrapper.vm.$router.push('/hello/world');
expect(history.length).toBe(2);
expect(location.pathname).toBe('/hello/world');
await wrapper.vm.$router.replace('/hello/earth');
expect(history.length).toBe(2);
expect(location.pathname).toBe('/hello/earth');
for (let i = 0; i < 2; ++i) {
await wrapper.find('a.about').trigger('click');
expect(history.length).toBe(3);
expect(location.pathname).toBe('/about');
}
for (let i = 0; i < 2; ++i) {
await wrapper.vm.$router.push('/about?query');
expect(history.length).toBe(4);
expect(location.search).toBe('?query');
}
for (let i = 0; i < 2; ++i) {
await wrapper.vm.$router.push('/about?query#hash');
expect(history.length).toBe(5);
expect(location.hash).toBe('#hash');
}
});
test('query strings and hash fragments are properly handled', async () => {
const wrapper = init();
for (const method of ['push', 'replace']) {
await wrapper.vm.$router[method]('/?test&value=duplicate&value=qwerty&encoded=%26+%3F#anchor');
expect(wrapper.vm.$route.query.test).toBe('');
expect(wrapper.vm.$route.query.value).toBe('qwerty');
expect(wrapper.vm.$route.query.encoded).toBe('& ?');
expect(wrapper.vm.$route.query.anchor).toBeUndefined();
expect(wrapper.vm.$route.queries.test).toEqual(['']);
expect(wrapper.vm.$route.queries.value).toEqual(['duplicate', 'qwerty']);
expect(wrapper.vm.$route.queries.encoded).toEqual(['& ?']);
expect(wrapper.vm.$route.queries.anchor).toBeUndefined();
expect(wrapper.vm.$route.hash).toBe('#anchor');
}
});
test('router listens to popstate event', async () => {
// `history.back()` doesn't seem to work in jsdom.
// https://github.com/jsdom/jsdom/issues/1565
window.addEventListener = jest.fn();
const wrapper = init();
expect(window.addEventListener).toHaveBeenCalledWith('popstate', expect.any(Function));
expect(wrapper.vm.$route.key).toBe(1);
expect(wrapper.emitted()['route-changed']).toBeUndefined();
window.addEventListener.mock.calls[0][1]();
expect(wrapper.vm.$route.key).toBe(2);
await wrapper.vm.$nextTick();
expect(wrapper.emitted()['route-changed']).toHaveLength(1);
});
test('clicking a link navigates to another view', async () => {
const wrapper = init();
await wrapper.find('a.about').trigger('click');
expect(wrapper.find('#view').text()).toBe('About page');
expect(wrapper.vm.$route.name).toBe('about');
expect(wrapper.emitted()['route-changed']).toHaveLength(1);
await wrapper.find('a.index').trigger('click');
expect(wrapper.find('#view').text()).toBe('Index page');
expect(wrapper.vm.$route.name).toBe('index');
expect(wrapper.emitted()['route-changed']).toHaveLength(2);
});
test('clicking an active link recreates the view', async () => {
const wrapper = init();
expect(wrapper.findComponent(Index).vm.number).toBe(0);
expect(wrapper.findComponent(Index).vm.created).toBe(true);
await wrapper.findComponent(Index).setData({ number: 42, created: false });
expect(wrapper.findComponent(Index).vm.number).toBe(42);
expect(wrapper.findComponent(Index).vm.created).toBe(false);
expect(wrapper.emitted()['route-changed']).toBeUndefined();
await wrapper.find('a.index').trigger('click');
expect(wrapper.findComponent(Index).vm.number).toBe(0);
expect(wrapper.findComponent(Index).vm.created).toBe(true);
expect(wrapper.emitted()['route-changed'].length).toBe(1);
});
test('parameters are properly passed to components', async () => {
const wrapper = init();
expect(wrapper.vm.$route.params).toEqual({});
for (const method of ['push', 'replace']) {
await wrapper.vm.$router[method]('/hello/world');
expect(wrapper.find('#view').text()).toBe('Hello, world!');
expect(wrapper.findComponent(Hello).vm.title).toBe('Hello');
expect(wrapper.findComponent(Hello).vm.user_name).toBe('world');
expect(wrapper.vm.$route.name).toBe('hello');
expect(wrapper.vm.$route.params).toEqual({ user_name: 'world' });
await wrapper.vm.$router[method]('/greetings/test_123');
expect(wrapper.find('#view').text()).toBe('Greetings, test_123!');
expect(wrapper.findComponent(Hello).vm.title).toBe('Greetings');
expect(wrapper.findComponent(Hello).vm.user_name).toBe('test_123');
expect(wrapper.vm.$route.name).toBe('greetings');
expect(wrapper.vm.$route.params).toEqual({ user_name: 'test_123' });
await wrapper.vm.$router[method]('/forbidden');
expect(wrapper.find('#view').text()).toBe('Error 403');
expect(wrapper.findComponent(Error).vm.code).toBe(403);
expect(wrapper.vm.$route.name).toBeUndefined();
expect(wrapper.vm.$route.params).toEqual({});
await wrapper.vm.$router[method]('/non-existent');
expect(wrapper.find('#view').text()).toBe('Error 404');
expect(wrapper.findComponent(Error).vm.code).toBe(404);
expect(wrapper.vm.$route.path).toBe('*');
expect(wrapper.vm.$route.params._).toBe('/non-existent');
}
});
test('meta object is stored properly', async () => {
const wrapper = init();
expect(wrapper.vm.$route.meta).toEqual({});
for (const method of ['push', 'replace']) {
await wrapper.vm.$router[method]('/forbidden');
expect(wrapper.vm.$route.meta).toEqual({ login_required: true });
await wrapper.vm.$router[method]('/about');
expect(wrapper.vm.$route.meta).toEqual({});
}
});
test('exceptions are thrown with proper error messages', () => {
const wrapper = init({ wildcard: false });
for (const method of ['push', 'replace']) {
expect(() => wrapper.vm.$router[method]('/non-existent')).toThrow('no route matching the current path: /non-existent');
}
expect(() => wrapper.vm.$router.resolve('forbidden')).toThrow('no route named "forbidden"');
expect(() => wrapper.vm.$url('hello')).toThrow('no values provided for key `user_name`'); // From url-pattern
});
test('base parameter works', async () => {
history.pushState({}, '', '/app/');
const wrapper = init({ base: '/app' });
expect(wrapper.find('#view').text()).toBe('Index page');
await wrapper.find('a.about').trigger('click');
expect(wrapper.find('#view').text()).toBe('About page');
expect(location.pathname).toBe('/app/about');
for (const method of ['push', 'replace']) {
await wrapper.vm.$router[method]('/app/hello/base');
expect(wrapper.find('#view').text()).toBe('Hello, base!');
expect(wrapper.vm.$route.name).toBe('hello');
await wrapper.vm.$router[method]('/app/app');
expect(wrapper.find('#view').text()).toBe('Error 404');
expect(wrapper.vm.$router.resolve('index')).toBe('/app/');
expect(() => wrapper.vm.$router[method]('/')).toThrow('no route matching the current path: /');
}
});