Add more tests

package.json

@@ -107,9 +107,8 @@
     "setupTestFrameworkScriptFile": "<rootDir>/resources/assets/tests/setup.js",
     "coveragePathIgnorePatterns": [
       "/node_modules/",
-      "setup",
-      "utils",
-      "assets/src/js"
+      "<rootDir>/resources/assets/tests/setup",
+      "<rootDir>/resources/assets/tests/utils"
     ],
     "testRegex": "resources/assets/tests/.*\\.(spec|test)\\.js"
   },

resources/assets/src/js/net.js

@@ -1,9 +1,8 @@
 import Vue from 'vue';
+import { emit } from './event';
 import { queryStringify } from './utils';
 import { showAjaxError } from './notify';
 
-const csrfField = document.querySelector('meta[name="csrf-token"]');
-
 const empty = Object.create(null);
 /** @type Request */
 export const init = {
@@ -11,11 +10,19 @@ export const init = {
     headers: {
         'Accept': 'application/json',
         'Content-Type': 'application/json',
-        'X-CSRF-TOKEN': csrfField && csrfField.content
     }
 };
 
+function retrieveToken() {
+    const csrfField = document.querySelector('meta[name="csrf-token"]');
+    return csrfField && csrfField.content;
+}
+
 export async function walkFetch(request) {
+    request.headers['X-CSRF-TOKEN'] = retrieveToken();
+
+    emit('beforeFetch', request);
+
     try {
         const response = await fetch(request);
         if (response.ok) {

resources/assets/src/js/notify.js

@@ -11,7 +11,7 @@ import { trans } from './i18n';
  * @return {void}
  */
 export function showMsg(msg, type = 'info') {
-    $('[id=msg]')
+    $('#msg')
         .removeClass()
         .addClass('callout')
         .addClass(`callout-${type}`)
@@ -30,7 +30,7 @@ export function showAjaxError(error) {
     }
 
     const message = typeof error === 'string' ? error : error.message;
-    showModal(message.replace(/\n/g, '<br />'), trans('general.fatalError'), 'danger');
+    showModal(message.replace(/\n/g, '<br>'), trans('general.fatalError'), 'danger');
 }
 
 /**
@@ -68,7 +68,7 @@ export function showModal(msg, title = 'Message', type = 'default', options = {}
         </div>
     </div>`;
 
-    $(dom).on('hidden.bs.modal', function () {
+    $(dom).on('hidden.bs.modal', /* istanbul ignore next */ function () {
         destroyOnClose && $(this).remove();
     }).modal(options);
 }

resources/assets/tests/js/net.test.js

@@ -0,0 +1,78 @@
+import * as net from '@/js/net';
+import { on } from '@/js/event';
+import { showAjaxError } from '@/js/notify';
+
+jest.mock('@/js/notify');
+
+test('the GET method', async () => {
+    const json = jest.fn().mockResolvedValue({});
+    window.fetch = jest.fn().mockResolvedValue({
+        ok: true,
+        json
+    });
+    window.Request = jest.fn(function (url, init) {
+        this.url = url;
+        Object.keys(init).forEach(key => this[key] = init[key]);
+    });
+
+    await net.get('/abc', { a: 'b' });
+    expect(window.fetch.mock.calls[0][0].url).toBe('/abc?a=b');
+    expect(json).toBeCalled();
+
+    await net.get('/abc');
+    expect(window.fetch.mock.calls[1][0].url).toBe('/abc');
+});
+
+test('the POST method', async () => {
+    window.fetch = jest.fn().mockResolvedValue({
+        ok: true,
+        json: () => Promise.resolve({})
+    });
+    window.Request = jest.fn(function (url, init) {
+        this.url = url;
+        Object.keys(init).forEach(key => this[key] = init[key]);
+    });
+
+    const meta = document.createElement('meta');
+    meta.name = 'csrf-token';
+    meta.content = 'token';
+    document.head.appendChild(meta);
+
+    await net.post('/abc', { a: 'b' });
+    const request = window.fetch.mock.calls[0][0];
+    expect(request.url).toBe('/abc');
+    expect(request.method).toBe('POST');
+    expect(request.body).toBe(JSON.stringify({ a: 'b' }));
+    expect(request.headers['X-CSRF-TOKEN']).toBe('token');
+
+    await net.post('/abc');
+    expect(window.fetch.mock.calls[1][0].body).toBe('{}');
+});
+
+test('low level fetch', async () => {
+    const json = jest.fn().mockResolvedValue({});
+    window.fetch = jest.fn()
+        .mockRejectedValueOnce(new Error)
+        .mockResolvedValueOnce({
+            ok: false,
+            text: () => Promise.resolve('404')
+        })
+        .mockResolvedValueOnce({
+            ok: true,
+            json
+        });
+
+    const stub = jest.fn();
+    on('beforeFetch', stub);
+    const request = { headers: {} };
+
+    await net.walkFetch(request);
+    expect(showAjaxError.mock.calls[0][0]).toBeInstanceOf(Error);
+    expect(stub).toBeCalledWith(request);
+
+    await net.walkFetch(request);
+    expect(showAjaxError).toBeCalledWith('404');
+
+    await net.walkFetch(request);
+    expect(json).toBeCalled();
+});

resources/assets/tests/js/notify.test.js

@@ -0,0 +1,35 @@
+import $ from 'jquery';
+import * as notify from '@/js/notify';
+
+test('show message', () => {
+    document.body.innerHTML = '<div id=msg class="callout-x"></div>';
+    notify.showMsg('hi');
+
+    const element = $('#msg');
+    expect(element.hasClass('callout')).toBeTrue();
+    expect(element.hasClass('callout-info')).toBeTrue();
+    expect(element.html()).toBe('hi');
+});
+
+test('show AJAX error', () => {
+    notify.showAjaxError();  // Can be no arguments
+
+    $.fn.modal = function () {
+        document.body.innerHTML = this.html();
+    };
+    notify.showAjaxError('error\nerror');
+    expect(document.body.innerHTML).toContain('error<br>error');
+
+    notify.showAjaxError(new Error('an-error'));
+    expect(document.body.innerHTML).toContain('an-error');
+});
+
+test('show modal', () => {
+    notify.showModal('message');
+    expect($('.modal-title').html()).toBe('Message');
+
+    notify.showModal('message', '', 'default', {
+        callback: () => undefined,
+        destroyOnClose: false
+    });
+});

resources/assets/tests/js/utils.test.js

@@ -0,0 +1,23 @@
+import * as utils from '@/js/utils';
+
+test('debounce', () => {
+    const stub = jest.fn();
+    const debounced = utils.debounce(stub, 2000);
+
+    debounced();
+    debounced();
+    expect(stub).not.toBeCalled();
+    jest.runAllTimers();
+    expect(stub).toBeCalledTimes(1);
+});
+
+test('queryString', () => {
+    history.pushState({}, 'page', 'about:blank?key=value');
+    expect(utils.queryString('key')).toBe('value');
+    expect(utils.queryString('a')).toBeUndefined();
+    expect(utils.queryString('a', 'b')).toBe('b');
+});
+
+test('queryStringify', () => {
+    expect(utils.queryStringify({ a: 'b', c: 'd' })).toBe('a=b&c=d');
+});