drive: Add a very basic browser test for the autocomplete feature

The test verifies that the autocomplete list is shown properly.

BUG=179976
TEST=none

Review URL: https://codereview.chromium.org/14312009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194730 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/extensions/file_manager/file_manager_browsertest.cc

@@ -707,4 +707,12 @@ IN_PROC_BROWSER_TEST_P(FileManagerBrowserDriveTest, TestOpenRecent) {
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
 
+IN_PROC_BROWSER_TEST_P(FileManagerBrowserDriveTest, TestAutocomplete) {
+  drive_test_util::WaitUntilDriveMountPointIsAdded(browser()->profile());
+
+  ResultCatcher catcher;
+  StartTest("autocomplete");
+  ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
+}
+
 }  // namespace

chrome/browser/resources/file_manager/js/test_util.js

@@ -107,6 +107,60 @@ test.util.waitForFileListChange = function(
   helper();
 };
 
+/**
+ * Returns an array of items on the file manager's autocomplete list.
+ *
+ * @param {Window} contentWindow Window to be tested.
+ * @return {Array.<string>} Array of items.
+ */
+test.util.getAutocompleteList = function(contentWindow) {
+  var list = contentWindow.document.querySelector('#autocomplete-list');
+  var lines = list.querySelectorAll('li');
+  var items = [];
+  for (var j = 0; j < lines.length; ++j) {
+    var line = lines[j];
+    items.push(line.innerText);
+  }
+  return items;
+};
+
+/**
+ * Performs autocomplete with the given query and waits until at least
+ * |numExpectedItems| items are shown, including the first item which
+ * always looks like "'<query>' - search Drive".
+ *
+ * @param {Window} contentWindow Window to be tested.
+ * @param {string} query Query used for autocomplete.
+ * @param {number} numExpectedItems number of items to be shown.
+ * @param {function(Array.<string>)} callback Change callback.
+ */
+test.util.performAutocompleteAndWait = function(
+    contentWindow, query, numExpectedItems, callback) {
+  // Dispatch a 'focus' event to the search box so that the autocomplete list
+  // is attached to the search box. Note that calling searchBox.focus() won't
+  // dispatch a 'focus' event.
+  var searchBox = contentWindow.document.querySelector('#search-box');
+  var focusEvent = contentWindow.document.createEvent('Event');
+  focusEvent.initEvent('focus', true /* bubbles */, true /* cancelable */);
+  searchBox.dispatchEvent(focusEvent);
+
+  // Change the value of the search box and dispatch an 'input' event so that
+  // the autocomplete query is processed.
+  searchBox.value = query;
+  var inputEvent = contentWindow.document.createEvent('Event');
+  inputEvent.initEvent('input', true /* bubbles */, true /* cancelable */);
+  searchBox.dispatchEvent(inputEvent);
+
+  function helper() {
+    var items = test.util.getAutocompleteList(contentWindow);
+    if (items.length >= numExpectedItems)
+      callback(items);
+    else
+      window.setTimeout(helper, 50);
+  }
+  helper();
+};
+
 /**
  * Waits until a dialog with an OK button is shown and accepts it.
  *
@@ -249,6 +303,10 @@ test.util.registerRemoteTestUtils = function() {
         case 'getFileList':
           sendResponse(test.util.getFileList(contentWindow));
           return false;
+        case 'performAutocompleteAndWait':
+          test.util.performAutocompleteAndWait(
+              contentWindow, request.args[0], request.args[1], sendResponse);
+          return true;
         case 'waitForFileListChange':
           test.util.waitForFileListChange(
               contentWindow, request.args[0], sendResponse);

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

@@ -173,3 +173,26 @@ testcase.openSidebarRecent = function() {
         });
   });
 };
+
+/**
+ * Tests autocomplete with a query 'hello'. This test is only available for
+ * Drive.
+ */
+testcase.autocomplete = function() {
+  var EXPECTED_AUTOCOMPLETE_LIST = [
+    '\'hello\' - search Drive\n',
+    'hello.txt\n',
+  ];
+
+  var onAutocompleteListShown = chrome.test.callbackPass(
+      function(autocompleteList) {
+        chrome.test.assertEq(EXPECTED_AUTOCOMPLETE_LIST, autocompleteList);
+      });
+
+  setupAndWaitUntilReady('/drive/root', function(appId, list) {
+    callRemoteTestUtil('performAutocompleteAndWait',
+                       appId,
+                       ['hello', EXPECTED_AUTOCOMPLETE_LIST.length],
+                       onAutocompleteListShown);
+  });
+};