[Assorted-commits] SF.net SVN: assorted:[1890] sandbox/trunk/src/node

[<yan...@us...>]

Revision: 1890
          http://sourceforge.net/p/assorted/svn/1890
Author:   yangzhang
Date:     2016-03-07 01:10:08 +0000 (Mon, 07 Mar 2016)
Log Message:
-----------
Add jest demo

Added Paths:
-----------
    sandbox/trunk/src/node/jest/
    sandbox/trunk/src/node/jest/__tests__/
    sandbox/trunk/src/node/jest/__tests__/displayUser-test.js
    sandbox/trunk/src/node/jest/__tests__/fetchCurrentUser-test.js
    sandbox/trunk/src/node/jest/__tests__/sum-test.js
    sandbox/trunk/src/node/jest/displayUser.js
    sandbox/trunk/src/node/jest/fetchCurrentUser.js
    sandbox/trunk/src/node/jest/package.json
    sandbox/trunk/src/node/jest/sum.js

Added: sandbox/trunk/src/node/jest/__tests__/displayUser-test.js
===================================================================
--- sandbox/trunk/src/node/jest/__tests__/displayUser-test.js	                        (rev 0)
+++ sandbox/trunk/src/node/jest/__tests__/displayUser-test.js	2016-03-07 01:10:08 UTC (rev 1890)
@@ -0,0 +1,41 @@
+// __tests__/displayUser-test.js
+'use strict';
+
+jest
+  .unmock('../displayUser.js')
+  .unmock('jquery');
+
+describe('displayUser', () => {
+  it('displays a user after a click', () => {
+    // Set up our document body
+    document.body.innerHTML =
+      '<div>' +
+      '  <span id="username" />' +
+      '  <button id="button" />' +
+      '</div>';
+
+    // This module has a side-effect
+    require('../displayUser');
+
+    const $ = require('jquery');
+    const fetchCurrentUser = require('../fetchCurrentUser');
+
+    // Tell the fetchCurrentUser mock function to automatically invoke
+    // its callback with some data
+    fetchCurrentUser.mockImplementation((cb) =>  {
+      cb({
+        loggedIn: true,
+        fullName: 'Johnny Cash',
+      });
+    });
+
+    // Use jquery to emulate a click on our button
+    $('#button').click();
+
+    // Assert that the fetchCurrentUser function was called, and that the
+    // #username span's innter text was updated as we'd it expect.
+    expect(fetchCurrentUser).toBeCalled();
+    expect($('#username').text()).toEqual('Johnny Cash - Logged In');
+  });
+});
+

Added: sandbox/trunk/src/node/jest/__tests__/fetchCurrentUser-test.js
===================================================================
--- sandbox/trunk/src/node/jest/__tests__/fetchCurrentUser-test.js	                        (rev 0)
+++ sandbox/trunk/src/node/jest/__tests__/fetchCurrentUser-test.js	2016-03-07 01:10:08 UTC (rev 1890)
@@ -0,0 +1,46 @@
+// __tests__/fetchCurrentUser-test.js
+'use strict';
+
+jest.unmock('../fetchCurrentUser.js');
+
+describe('fetchCurrentUser', () => {
+  it('calls into $.ajax with the correct params', () => {
+    const $ = require('jquery');
+    const fetchCurrentUser = require('../fetchCurrentUser');
+
+    // Call into the function we want to test
+    const dummyCallback = () => {};
+    fetchCurrentUser(dummyCallback);
+
+    // Now make sure that $.ajax was properly called during the previous
+    // 2 lines
+    expect($.ajax).toBeCalledWith({
+      type: 'GET',
+      url: 'http://example.com/currentUser',
+      success: jasmine.any(Function),
+    });
+  });
+
+  it('calls the callback when $.ajax requests are finished', () => {
+    const $ = require('jquery');
+    const fetchCurrentUser = require('../fetchCurrentUser');
+
+    // Create a mock function for our callback
+    const callback = jest.fn();
+    fetchCurrentUser(callback);
+
+    // Now we emulate the process by which `$.ajax` would execute its own
+    // callback
+    $.ajax.mock.calls[0/*first call*/][0/*first argument*/].success({
+      firstName: 'Bobby',
+      lastName: '");DROP TABLE Users;--',
+    });
+
+    // And finally we assert that this emulated call by `$.ajax` incurred a
+    // call back into the mock function we provided as a callback
+    expect(callback.mock.calls[0/*first call*/][0/*first arg*/]).toEqual({
+      loggedIn: true,
+      fullName: 'Bobby ");DROP TABLE Users;--',
+    });
+  });
+});

Added: sandbox/trunk/src/node/jest/__tests__/sum-test.js
===================================================================
--- sandbox/trunk/src/node/jest/__tests__/sum-test.js	                        (rev 0)
+++ sandbox/trunk/src/node/jest/__tests__/sum-test.js	2016-03-07 01:10:08 UTC (rev 1890)
@@ -0,0 +1,9 @@
+jest.unmock('../sum'); // unmock to use the actual implementation of sum
+
+describe('sum', () => {
+  it('adds 1 + 2 to equal 3', () => {
+    const sum = require('../sum');
+    expect(sum(1, 2)).toBe(3);
+  });
+});
+

Added: sandbox/trunk/src/node/jest/displayUser.js
===================================================================
--- sandbox/trunk/src/node/jest/displayUser.js	                        (rev 0)
+++ sandbox/trunk/src/node/jest/displayUser.js	2016-03-07 01:10:08 UTC (rev 1890)
@@ -0,0 +1,13 @@
+// displayUser.js
+'use strict';
+
+const $ = require('jquery');
+const fetchCurrentUser = require('./fetchCurrentUser.js');
+
+$('#button').click(() => {
+  fetchCurrentUser(user => {
+    const loggedText = 'Logged ' + (user.loggedIn ? 'In' : 'Out');
+    $('#username').text(user.fullName + ' - ' + loggedText);
+  });
+});
+

Added: sandbox/trunk/src/node/jest/fetchCurrentUser.js
===================================================================
--- sandbox/trunk/src/node/jest/fetchCurrentUser.js	                        (rev 0)
+++ sandbox/trunk/src/node/jest/fetchCurrentUser.js	2016-03-07 01:10:08 UTC (rev 1890)
@@ -0,0 +1,21 @@
+// fetchCurrentUser.js
+'use strict';
+
+const $ = require('jquery');
+
+function parseJSON(user) {
+  return {
+    loggedIn: true,
+    fullName: user.firstName + ' ' + user.lastName,
+  };
+}
+
+function fetchCurrentUser(callback) {
+  return $.ajax({
+    type: 'GET',
+    url: 'http://example.com/currentUser',
+    success: user => callback(parseJSON(user)),
+  });
+}
+
+module.exports = fetchCurrentUser;

Added: sandbox/trunk/src/node/jest/package.json
===================================================================
--- sandbox/trunk/src/node/jest/package.json	                        (rev 0)
+++ sandbox/trunk/src/node/jest/package.json	2016-03-07 01:10:08 UTC (rev 1890)
@@ -0,0 +1,16 @@
+{
+  "name": "jest-test",
+  "version": "1.0.0",
+  "description": "",
+  "main": "sum.js",
+  "dependencies": {
+    "jest-cli": "^0.9.0",
+    "jquery": "^2.2.1"
+  },
+  "devDependencies": {},
+  "scripts": {
+    "test": "jest"
+  },
+  "author": "",
+  "license": "ISC"
+}

Added: sandbox/trunk/src/node/jest/sum.js
===================================================================
--- sandbox/trunk/src/node/jest/sum.js	                        (rev 0)
+++ sandbox/trunk/src/node/jest/sum.js	2016-03-07 01:10:08 UTC (rev 1890)
@@ -0,0 +1,4 @@
+function sum(a, b) {
+  return a + b;
+}
+module.exports = sum;

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