fix enable clipboard

apps/remix-ide-e2e/src/commands/enableClipBoard.ts

@@ -4,7 +4,8 @@ import EventEmitter from 'events'
 class EnableClipBoard extends EventEmitter {
   command (this: NightwatchBrowser, remember:boolean, accept: boolean): NightwatchBrowser {
     const browser = this.api
-    if(browser.isChrome()){
+    
+    if(browser.browserName.indexOf('chrome') > -1){
       const chromeBrowser = (browser as any).chrome
       chromeBrowser.setPermission('clipboard-read', 'granted')
       chromeBrowser.setPermission('clipboard-write', 'granted')

apps/remix-ide-e2e/src/tests/file_explorer_dragdrop.test.ts

@@ -0,0 +1,21 @@
+'use strict'
+import { NightwatchBrowser } from 'nightwatch'
+import init from '../helpers/init'
+
+module.exports = {
+    '@disabled': true,
+    before: function (browser: NightwatchBrowser, done: VoidFunction) {
+        init(browser, done)
+    },
+    'drag and drop file from root to contracts #group1': async function (browser: NightwatchBrowser) {
+        browser.findElement('li[data-id="treeViewLitreeViewItemcontracts"]', (el) => {
+            console.log((el as any).value.getId())
+            const id = (el as any).value.getId()
+            browser
+                .clickLaunchIcon('filePanel')
+                .waitForElementVisible('li[data-id="treeViewLitreeViewItemREADME.txt"]')
+                .dragAndDrop('li[data-id="treeViewLitreeViewItemREADME.txt"]', id)
+                .waitForElementVisible('li[data-id="treeViewLitreeViewItemcontracts/README.txt"]')
+        })
+    }
+}