[Reading List iOS] Collapse whitespace on item title.

components/reading_list/ios/reading_list_model_unittest.mm

 // Copyright 2016 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.
 
 #include "components/reading_list/ios/reading_list_model.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #import "base/test/ios/wait_util.h"
 #include "components/reading_list/ios/reading_list_model_impl.h"
@@ skipping 665 matching lines @@
   EXPECT_EQ(distilled_url, entry->DistilledURL());
 }
 
 // Tests that ReadingListModel calls CallbackModelBeingDeleted when destroyed.
 TEST_F(ReadingListModelTest, CallbackModelBeingDeleted) {
   AssertObserverCount(1, 0, 0, 0, 0, 0, 0, 0, 0);
   model_.reset();
   AssertObserverCount(1, 0, 0, 1, 0, 0, 0, 0, 0);
 }
 
+// Tests that new line characters and spaces are collapsed in title.
+TEST_F(ReadingListModelTest, TestTrimmingTitle) {
+  const GURL gurl("http://example.com");
+  std::string title = "\n  This\ttitle \n contains new     line \n characters ";
+  model_->AddEntry(gurl, title, reading_list::ADDED_VIA_CURRENT_APP);
+  model_->SetReadStatus(gurl, true);
+  const ReadingListEntry* entry = model_->GetEntryByURL(gurl);
+  EXPECT_EQ(entry->Title(), "This title contains new line characters");
+  model_->SetEntryTitle(gurl, "test");
+  EXPECT_EQ(entry->Title(), "test");
+  model_->SetEntryTitle(gurl, title);
+  EXPECT_EQ(entry->Title(), "This title contains new line characters");
+}
+
 }  // namespace