Add initial touch bar specs

spec/api-touch-bar-spec.js

@@ -0,0 +1,50 @@
+const assert = require('assert')
+const {BrowserWindow, TouchBar} = require('electron').remote
+const {closeWindow} = require('./window-helpers')
+
+const {TouchBarButton, TouchBarColorPicker, TouchBarGroup} = TouchBar
+const {TouchBarLabel, TouchBarPopover, TouchBarSlider, TouchBarSpacer} = TouchBar
+
+describe('TouchBar module', function () {
+  it('throws an error when created without an items array', function () {
+    assert.throws(() => {
+      const touchBar = new TouchBar()
+      touchBar.toString()
+    }, /Must specify items array as first argument/)
+  })
+
+  it('throws an error when created with invalid items', function () {
+    assert.throws(() => {
+      const touchBar = new TouchBar([1, true, {}, []])
+      touchBar.toString()
+    }, /Each item must be an instance of TouchBarItem/)
+  })
+
+  describe('BrowserWindow behavior', function () {
+    let window
+
+    beforeEach(function () {
+      window = new BrowserWindow()
+    })
+
+    afterEach(function () {
+      window.setTouchBar(null)
+      return closeWindow(window).then(function () { window = null })
+    })
+
+    it('can be added to and removed from a window', function () {
+      const touchBar = new TouchBar([
+        new TouchBarButton({label: 'foo', backgroundColor: '#F00', click: () => {}}),
+        new TouchBarColorPicker({selectedColor: '#F00', change: () => {}}),
+        new TouchBarGroup({items: new TouchBar([new TouchBarLabel({label: 'hello'})])}),
+        new TouchBarLabel({label: 'bar'}),
+        new TouchBarPopover({items: new TouchBar([new TouchBarButton({label: 'pop'})])}),
+        new TouchBarSlider({label: 'slide', value: 5, minValue: 2, maxValue: 75, change: () => {}}),
+        new TouchBarSpacer({size: 'large'})
+      ])
+      window.setTouchBar(touchBar)
+      window.setTouchBar()
+      window.setTouchBar(new TouchBar([new TouchBarLabel({label: 'two'})]))
+    })
+  })
+})