Add browser test to the sharing dialog feature in Files.app.

chrome/test/data/extensions/api_test/file_manager_browsertest/test_cases.js

 // Copyright (c) 2013 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.
 
 /**
  * Expected files before tests are performed. Entries for Local tests.
  * @type {Array.<Array.<string>>}
  * @const
  */
 var EXPECTED_FILES_BEFORE_LOCAL = [
@@ skipping 799 matching lines @@
           checkIfNoErrorsOccured(this.next);
           return;
         }
       }
       chrome.test.fail();
     }
   ]);
 };
 
 /**
+ * Test sharing dialog for a file or directory on Drive
+ * @param {string} path Path for a file or a directory to be shared.
+ */
+testcase.intermediate.share = function(path) {
+  var appId;
+  StepsRunner.run([
+    // Set up File Manager.
+    function() {
+      setupAndWaitUntilReady('/drive/root/', this.next);
+    },
+    // Select the source file.
+    function(inAppId) {
+      appId = inAppId;
+      callRemoteTestUtil(
+          'selectFile', appId, [path], this.next);
+    },
+    // Wait for the share button.
+    function(result) {
+      chrome.test.assertTrue(result);
+      callRemoteTestUtil('waitForElement',
+                         appId,
+                         ['#share-button:not([disabled])'],
+                         this.next);
+    },
+    // Invoke the share dialog.
+    function(result) {
+      callRemoteTestUtil('fakeMouseClick',
+                         appId,
+                         ['#share-button'],
+                         this.next);
+    },
+    // Wait until the share dialog's contents are shown.
+    function(result) {
+      chrome.test.assertTrue(result);
+      callRemoteTestUtil('waitForElement',
+                         appId,
+                         ['.share-dialog-webview-wrapper.loaded'],
+                         this.next);
+    },
+    function(result) {
+      callRemoteTestUtil('waitForStyles',
+                         appId,
+                         [{
+                            query: '.share-dialog-webview-wrapper.loaded',
+                            styles: {
+                              width: '350px',
+                              height: '250px'
+                            }
+                          }],
+                         this.next);
+    },
+    // Wait until the share dialog's contents are shown.
+    function(result) {
+      callRemoteTestUtil('executeScriptInWebView',
+                         appId,
+                         ['.share-dialog-webview-wrapper.loaded webview',
+                          'document.querySelector("button").click()'],
+                         this.next);
+    },
+    // Wait until the share dialog's contents are hidden.
+    function(result) {
+      callRemoteTestUtil('waitForElement',
+                         appId,
+                         ['.share-dialog-webview-wrapper.loaded',
+                          null,   // iframeQuery
+                          true],  // inverse
+                         this.next);
+    },
+    // Check for Javascript errros.
+    function() {
+      checkIfNoErrorsOccured(this.next);
+    }
+  ]);
+};
+
+/**
  * Tests copy from drive's root to local's downloads.
  */
 testcase.transferFromDriveToDownloads = function() {
   testcase.intermediate.copyBetweenVolumes('hello.txt',
                                            'drive',
                                            EXPECTED_FILES_BEFORE_DRIVE,
                                            'downloads',
                                            EXPECTED_FILES_BEFORE_LOCAL);
 };
 
@@ skipping 68 matching lines @@
  */
 testcase.transferFromOfflineToDrive = function() {
   testcase.intermediate.copyBetweenVolumes('Test Document.gdoc',
                                            'drive_offline',
                                            EXPECTED_FILES_IN_OFFLINE,
                                            'drive',
                                            EXPECTED_FILES_BEFORE_DRIVE);
 };
 
 /**
+ * Tests sharing a file on Drive
+ */
+testcase.shareFile = function() {
+  testcase.intermediate.share('world.ogv');
+};
+
+/**
+ * Tests sharing a directory on Drive
+ */
+testcase.shareDirectory = function() {
+  testcase.intermediate.share('photos');
+};
+
+/**
  * Tests hiding the search box.
  */
 testcase.hideSearchBox = function() {
   var appId;
   StepsRunner.run([
     // Set up File Manager.
     function() {
       setupAndWaitUntilReady('/Downloads', this.next);
     },
     // Resize the window.
@@ skipping 146 matching lines @@
                          appId,
                          ['.detail-table[hidden]'],
                          this.next);
     },
     // Check the error.
     function() {
       checkIfNoErrorsOccured(this.next);
     }
   ]);
 };