Add jest unit tests for adding and deleting notebooks

app/components/__tests__/LibraryNav-test.jsx

@@ -0,0 +1,90 @@
+jest.autoMockOff()
+
+import React from 'react'
+import ReactDOM from 'react-dom'
+import TestUtils from 'react-addons-test-utils'
+
+import * as utils from '../../utils'
+utils.APP_NAME = 'JestTest'
+import path from 'path'
+
+import fs from 'fs'
+
+const injectTapEventPlugin = require("react-tap-event-plugin")
+injectTapEventPlugin()
+
+const LibraryNav = require('../LibraryNav').default
+
+function tap(element){
+    var dom = ReactDOM.findDOMNode(element).firstChild
+    TestUtils.Simulate.touchTap(dom)
+}
+
+describe('LibraryNav', () => {
+
+    beforeEach(() => {
+    })
+
+    it('test index select', () => {
+        var libraryNav = TestUtils.renderIntoDocument(
+            <LibraryNav id="library-nav" className="left inline fill-height" />
+        )
+        expect(libraryNav.state.navItems.length).toEqual(5)
+
+        var libraryNavList = libraryNav.refs.mainList
+
+        var entriesItem = libraryNav.refs.Entries
+        tap(entriesItem)
+        expect(libraryNavList.state.selectedIndex).toEqual(0)
+
+        var allNotesItem = libraryNav.refs['All Notes']
+        tap(allNotesItem)
+        expect(libraryNavList.state.selectedIndex).toEqual(4)
+    })
+
+    it('test add notebook', (done) => {
+    
+        var libraryNav = TestUtils.renderIntoDocument(
+            <LibraryNav id="library-nav" className="left inline fill-height" />
+        )
+        
+        var initialLen = libraryNav.state.notebooks.length
+
+        var callback = (notebook) => {
+            var afterLen = libraryNav.state.notebooks.length
+
+            expect(afterLen).toBeGreaterThan(initialLen)
+
+            var nbExists = fs.existsSync(notebook.path)
+            var nbMetaExists = fs.existsSync(path.join(notebook.path, 'meta.json'))
+            expect(nbExists).toEqual(true)
+
+            expect(nbMetaExists).toEqual(true)
+
+            done()
+        }
+        libraryNav.addNotebookTapped(callback)
+    })
+
+    it('test delete notebook', (done) => {
+        var libraryNav = TestUtils.renderIntoDocument(
+            <LibraryNav id="library-nav" className="left inline fill-height" />
+        )
+
+        var initialLen = libraryNav.state.notebooks.length
+
+        var callback = (notebook) => {
+            var afterLen = libraryNav.state.notebooks.length
+
+            expect(initialLen).toBeGreaterThan(afterLen)
+
+            var nbExists = fs.existsSync(notebook.path)
+            expect(nbExists).toEqual(false)
+
+            done()
+        }
+
+        libraryNav.deleteTapped(0, callback)
+
+    })
+})