Add URL generator / json parser for getting start_page_token of changes.

google_apis/drive/drive_api_parser_unittest.cc

 // Copyright (c) 2012 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 "google_apis/drive/drive_api_parser.h"
 
 #include "base/time/time.h"
 #include "base/values.h"
 #include "google_apis/drive/test_util.h"
 #include "google_apis/drive/time_util.h"
@@ skipping 232 matching lines @@
   EXPECT_EQ("TestFolder", file3.title());
   EXPECT_EQ("application/vnd.google-apps.folder", file3.mime_type());
   ASSERT_TRUE(file3.IsDirectory());
   EXPECT_FALSE(file3.shared());
 
   ASSERT_EQ(1U, file3.parents().size());
   EXPECT_EQ("0AIv7G8yEYAWHUk9ABC", file3.parents()[0].file_id());
   EXPECT_EQ(0U, file3.open_with_links().size());
 }
 
+// Test start page token parsing.
+TEST(DriveAPIParserTest, StartPageTokenParser) {
+  std::string error;
+  std::unique_ptr<base::Value> document =
+      test_util::LoadJSONFile("drive/changes_start_page_token.json");
+  ASSERT_TRUE(document.get());
+  ASSERT_EQ(base::Value::Type::DICTIONARY, document->GetType());
+
+  std::unique_ptr<StartPageToken> start_page_token(new StartPageToken);
+  EXPECT_TRUE(start_page_token->Parse(*document));
+
+  EXPECT_EQ("TheStartPageToken", start_page_token->start_page_token());
+}
+
 // Test change list parsing.
 TEST(DriveAPIParserTest, ChangeListParser) {
   std::string error;
   std::unique_ptr<base::Value> document =
       test_util::LoadJSONFile("drive/changelist.json");
   ASSERT_TRUE(document.get());
 
   ASSERT_EQ(base::Value::Type::DICTIONARY, document->GetType());
   std::unique_ptr<ChangeList> changelist(new ChangeList);
   EXPECT_TRUE(changelist->Parse(*document));
@@ skipping 63 matching lines @@
       test_util::LoadJSONFile("drive/filelist.json"));
 
   EXPECT_TRUE(ChangeList::HasChangeListKind(*change_list_json));
   EXPECT_FALSE(ChangeList::HasChangeListKind(*file_list_json));
 
   EXPECT_FALSE(FileList::HasFileListKind(*change_list_json));
   EXPECT_TRUE(FileList::HasFileListKind(*file_list_json));
 }
 
 }  // namespace google_apis