Convert create_new_folder.js to use async-await.

Bug: 909056
Change-Id: I9b8c0f4a6aaa04d601c50a76311b9a44d2138ff0
Reviewed-on: https://chromium-review.googlesource.com/c/1351985Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Sam McNally <sammc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612468}

ui/file_manager/integration_tests/file_manager/create_new_folder.js

 // Copyright 2018 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-
 'use strict';
 
 /**
@@ -18,27 +17,25 @@ const TREEITEM_DOWNLOADS = '#directory-tree [entry-label="Downloads"]';
  * @param {string} appId The Files app windowId.
  * @return {Promise} Promise to be fulfilled on success.
  */
-function selectFirstFileListItem(appId) {
-  return Promise.resolve().then(function() {
+async function selectFirstFileListItem(appId) {
   // Ensure no file list items are selected.
-    return remoteCall.waitForElementLost(appId, '#file-list [selected]');
-  }).then(function() {
+  await remoteCall.waitForElementLost(appId, '#file-list [selected]');
+
   // Press DownArrow key to select an item.
   const key = ['#file-list', 'ArrowDown', false, false, false];
-    return remoteCall.callRemoteTestUtil('fakeKeyDown', appId, key);
-  }).then(function(result) {
-    chrome.test.assertTrue(result);
+  chrome.test.assertTrue(
+      await remoteCall.callRemoteTestUtil('fakeKeyDown', appId, key));
+
   // Await file list item selection.
-    return remoteCall.waitForElement(appId, '.table-row[selected]');
-  }).then(function() {
+  await remoteCall.waitForElement(appId, '.table-row[selected]');
+
   // Retrieve all selected items in the file list.
-    return remoteCall.callRemoteTestUtil(
+  const elements = await remoteCall.callRemoteTestUtil(
       'queryAllElements', appId, ['#file-list [selected]']);
-  }).then(function(elements) {
+
   // Check: the first list item only should be selected.
   chrome.test.assertEq(1, elements.length);
   chrome.test.assertEq('listitem-1', elements[0].attributes['id']);
-  });
 }
 
 /**
@@ -49,88 +46,81 @@ function selectFirstFileListItem(appId) {
  * @param {string} selector Downloads or Drive directory tree item selector.
  * @return {Promise} Promise to be fulfilled on success.
  */
-function createNewFolder(appId, initialEntrySet, selector) {
+async function createNewFolder(appId, initialEntrySet, selector) {
   const textInput = '#file-list .table-row[renaming] input.rename';
 
-  return new Promise(function(resolve) {
   // Focus the file-list.
-    remoteCall.callRemoteTestUtil('focus', appId, ['#file-list'], resolve);
-  }).then(function(result) {
-    chrome.test.assertTrue(result);
+  chrome.test.assertTrue(
+      await remoteCall.callRemoteTestUtil('focus', appId, ['#file-list']));
+
   // Press Ctrl+E to create a new folder.
-    const key = ['#file-list', 'e', true, false, false];
-    return remoteCall.callRemoteTestUtil('fakeKeyDown', appId, key);
-  }).then(function(result) {
-    chrome.test.assertTrue(result);
+  let key = ['#file-list', 'e', true, false, false];
+  chrome.test.assertTrue(
+      await remoteCall.callRemoteTestUtil('fakeKeyDown', appId, key));
+
   // Check: a new folder should be shown in the file list.
-    const files = [['New folder', '--', 'Folder', '']].concat(
+  let files = [['New folder', '--', 'Folder', '']].concat(
       TestEntryInfo.getExpectedRows(initialEntrySet));
-    return remoteCall.waitForFiles(
-        appId, files, {ignoreLastModifiedTime: true});
-  }).then(function() {
+
   // Check: a new folder should be present in the directory tree.
   const newSubtreeChildItem =
       selector + ' .tree-children .tree-item[entry-label="New folder"]';
-    return remoteCall.waitForElement(appId, newSubtreeChildItem);
-  }).then(function() {
+  await remoteCall.waitForElement(appId, newSubtreeChildItem);
+
   // Check: the text input should be shown in the file list.
-    return remoteCall.waitForElement(appId, textInput);
-  }).then(function() {
+  await remoteCall.waitForElement(appId, textInput);
+
   // Get all file list rows that have attribute 'renaming'.
   const renamingFileListRows = ['#file-list .table-row[renaming]'];
-    return remoteCall.callRemoteTestUtil(
+  let elements = await remoteCall.callRemoteTestUtil(
       'queryAllElements', appId, renamingFileListRows);
-  }).then(function(elements) {
+
   // Check: the new folder only should be 'renaming'.
   chrome.test.assertEq(1, elements.length);
   chrome.test.assertEq(0, elements[0].text.indexOf('New folder--'));
   chrome.test.assertTrue('selected' in elements[0].attributes);
-  }).then(function() {
+
   // Get all file list rows that have attribute 'selected'.
   const selectedFileListRows = ['#file-list .table-row[selected]'];
-    return remoteCall.callRemoteTestUtil(
+  elements = await remoteCall.callRemoteTestUtil(
       'queryAllElements', appId, selectedFileListRows);
-  }).then(function(elements) {
+
   // Check: the new folder only should be 'selected'.
   chrome.test.assertEq(1, elements.length);
   chrome.test.assertEq(0, elements[0].text.indexOf('New folder--'));
   chrome.test.assertTrue('renaming' in elements[0].attributes);
-  }).then(function() {
+
   // Type the test folder name.
-    return remoteCall.callRemoteTestUtil(
+  await remoteCall.callRemoteTestUtil(
       'inputText', appId, [textInput, 'Test Folder Name']);
-  }).then(function() {
+
   // Press the Enter key.
-    const key = [textInput, 'Enter', false, false, false];
-    return remoteCall.callRemoteTestUtil('fakeKeyDown', appId, key);
-  }).then(function(result) {
-    chrome.test.assertTrue(result);
+  key = [textInput, 'Enter', false, false, false];
+  chrome.test.assertTrue(
+      await remoteCall.callRemoteTestUtil('fakeKeyDown', appId, key));
+
   // Wait until renaming is complete.
   const renamingItem = '#file-list .table-row[renaming]';
-    return remoteCall.waitForElementLost(appId, renamingItem);
-  }).then(function() {
+  await remoteCall.waitForElementLost(appId, renamingItem);
+
   // Check: the test folder should be shown in the file list.
-    const files = [['Test Folder Name', '--', 'Folder', '']].concat(
+  files = [['Test Folder Name', '--', 'Folder', '']].concat(
       TestEntryInfo.getExpectedRows(initialEntrySet));
-    return remoteCall.waitForFiles(
-        appId, files, {ignoreLastModifiedTime: true});
-  }).then(function(elements) {
+
   // Check: the test folder should be present in the directory tree.
-    const testSubtreeChildItem = selector +
-        ' .tree-children .tree-item[entry-label="Test Folder Name"]';
-    return remoteCall.waitForElement(appId, testSubtreeChildItem);
-  }).then(function() {
+  const testSubtreeChildItem =
+      selector + ' .tree-children .tree-item[entry-label="Test Folder Name"]';
+  await remoteCall.waitForElement(appId, testSubtreeChildItem);
+
   // Get all file list rows that have attribute 'selected'.
-    const selectedFileListRows = ['#file-list .table-row[selected]'];
-    return remoteCall.callRemoteTestUtil(
+  elements = await remoteCall.callRemoteTestUtil(
       'queryAllElements', appId, selectedFileListRows);
-  }).then(function(elements) {
+
   // Check: the test folder only should be 'selected'.
   chrome.test.assertEq(1, elements.length);
   chrome.test.assertEq(
       0, elements[0].text.indexOf('Test Folder Name--'),
       'Actual text was: ' + elements[0].text);
-  });
 }
 
 /**
@@ -141,95 +131,53 @@ function createNewFolder(appId, initialEntrySet, selector) {
  * @param {string} selector Downloads or Drive directory tree item selector.
  * @return {Promise} Promise fulfilled on success.
  */
-function expandRoot(appId, selector) {
+async function expandRoot(appId, selector) {
   const expandIcon =
       selector + ' > .tree-row[has-children=true] > .expand-icon';
 
-  return new Promise(function(resolve) {
   // Wait for the subtree expand icon to appear.
-    remoteCall.waitForElement(appId, expandIcon).then(resolve);
-  }).then(function() {
+  await remoteCall.waitForElement(appId, expandIcon);
+
   // Click the expand icon to expand the subtree.
-    return remoteCall.callRemoteTestUtil('fakeMouseClick', appId, [expandIcon]);
-  }).then(function(result) {
-    chrome.test.assertTrue(result);
+  chrome.test.assertTrue(await remoteCall.callRemoteTestUtil(
+      'fakeMouseClick', appId, [expandIcon]));
+
   // Wait for the subtree to expand and display its children.
   const expandedSubtree = selector + ' > .tree-children[expanded]';
-    return remoteCall.waitForElement(appId, expandedSubtree);
-  }).then(function(element) {
+  const element = await remoteCall.waitForElement(appId, expandedSubtree);
+
   // Verify expected subtree child item name.
   if (element.text.indexOf('photos') === -1)
     chrome.test.fail('directory subtree child item "photos" not found');
-  });
 }
 
-testcase.selectCreateFolderDownloads = function() {
-  let appId;
-
-  const promise = new Promise(function(resolve) {
-    setupAndWaitUntilReady(
-        null, RootPath.DOWNLOADS, resolve, BASIC_LOCAL_ENTRY_SET, []);
-  }).then(function(results) {
-    appId = results.windowId;
-    return expandRoot(appId, TREEITEM_DOWNLOADS);
-  }).then(function() {
-    return selectFirstFileListItem(appId);
-  }).then(function() {
-    return createNewFolder(appId, BASIC_LOCAL_ENTRY_SET, TREEITEM_DOWNLOADS);
-  });
-
-  testPromise(promise);
+testcase.selectCreateFolderDownloads = async function() {
+  const {appId} = await setupAndWaitUntilReady(
+      null, RootPath.DOWNLOADS, null, BASIC_LOCAL_ENTRY_SET, []);
+  await expandRoot(appId, TREEITEM_DOWNLOADS);
+  await selectFirstFileListItem(appId);
+  await createNewFolder(appId, BASIC_LOCAL_ENTRY_SET, TREEITEM_DOWNLOADS);
 };
 
-testcase.createFolderDownloads = function() {
-  let appId;
-
-  const promise = new Promise(function(resolve) {
-    setupAndWaitUntilReady(
-        null, RootPath.DOWNLOADS, resolve, BASIC_LOCAL_ENTRY_SET, []);
-  }).then(function(results) {
-    appId = results.windowId;
-    return expandRoot(appId, TREEITEM_DOWNLOADS);
-  }).then(function() {
-    return createNewFolder(appId, BASIC_LOCAL_ENTRY_SET, TREEITEM_DOWNLOADS);
-  });
-
-  testPromise(promise);
+testcase.createFolderDownloads = async function() {
+  const {appId} = await setupAndWaitUntilReady(
+      null, RootPath.DOWNLOADS, null, BASIC_LOCAL_ENTRY_SET, []);
+  await expandRoot(appId, TREEITEM_DOWNLOADS);
+  await createNewFolder(appId, BASIC_LOCAL_ENTRY_SET, TREEITEM_DOWNLOADS);
 };
 
-testcase.createFolderNestedDownloads = function() {
-  let appId;
-
-  const promise = new Promise(function(resolve) {
-    setupAndWaitUntilReady(
-        null, RootPath.DOWNLOADS, resolve, BASIC_LOCAL_ENTRY_SET, []);
-  }).then(function(results) {
-    appId = results.windowId;
-    return expandRoot(appId, TREEITEM_DOWNLOADS);
-  }).then(function() {
-    return remoteCall.navigateWithDirectoryTree(
+testcase.createFolderNestedDownloads = async function() {
+  const {appId} = await setupAndWaitUntilReady(
+      null, RootPath.DOWNLOADS, null, BASIC_LOCAL_ENTRY_SET, []);
+  await expandRoot(appId, TREEITEM_DOWNLOADS);
+  await remoteCall.navigateWithDirectoryTree(
       appId, RootPath.DOWNLOADS_PATH + '/photos', 'My files/Downloads');
-  }).then(function() {
-    return remoteCall.waitForFiles(appId, [], {ignoreLastModifiedTime: true});
-  }).then(function() {
-    return createNewFolder(appId, [], TREEITEM_DOWNLOADS);
-  });
-
-  testPromise(promise);
+  await createNewFolder(appId, [], TREEITEM_DOWNLOADS);
 };
 
-testcase.createFolderDrive = function() {
-  let appId;
-
-  const promise = new Promise(function(resolve) {
-    setupAndWaitUntilReady(
-        null, RootPath.DRIVE, resolve, [], BASIC_DRIVE_ENTRY_SET);
-  }).then(function(results) {
-    appId = results.windowId;
-    return expandRoot(appId, TREEITEM_DRIVE);
-  }).then(function() {
-    return createNewFolder(appId, BASIC_DRIVE_ENTRY_SET, TREEITEM_DRIVE);
-  });
-
-  testPromise(promise);
+testcase.createFolderDrive = async function() {
+  const {appId} = await setupAndWaitUntilReady(
+      null, RootPath.DRIVE, null, [], BASIC_DRIVE_ENTRY_SET);
+  await expandRoot(appId, TREEITEM_DRIVE);
+  await createNewFolder(appId, BASIC_DRIVE_ENTRY_SET, TREEITEM_DRIVE);
 };