[AiS] Fix parsing for Answers Images.

components/omnibox/search_suggestion_parser_unittest.cc

+// Copyright 2014 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/omnibox/search_suggestion_parser.h"
+
+#include "base/json/json_reader.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace {
+
+scoped_ptr<base::DictionaryValue> AsDictionary(const std::string& json) {
+  base::Value* value = base::JSONReader::Read(json);
+  base::DictionaryValue* dict;
+  if (value && value->GetAsDictionary(&dict))
+    return scoped_ptr<base::DictionaryValue>(dict);
+
+  delete value;
+  return scoped_ptr<base::DictionaryValue>(new base::DictionaryValue);
+}
+
+}  // namespace
+
+TEST(SearchSuggestionParser, GetAnswersImageURLsWithoutImagelines) {
+  std::vector<GURL> urls;
+
+  // No "l" entry in the dictionary.
+  SearchSuggestionParser::GetAnswersImageURLs(AsDictionary("").get(), &urls);
+  EXPECT_TRUE(urls.empty());
+
+  // Empty "l" entry in the dictionary.
+  SearchSuggestionParser::GetAnswersImageURLs(
+      AsDictionary("{ \"l\" : {} } ").get(), &urls);
+  EXPECT_TRUE(urls.empty());
+}
+
+TEST(SearchSuggestionParser, GetAnswersImageURLsWithValidImage) {
+  std::vector<GURL> urls;
+
+  const char answer_json[] =
+      "{ \"l\" : [{\"il\": { \"i\": {\"d\": "
+      "\"//ssl.gstatic.com/foo.png\",\"t\": 3}}}]}";
+  SearchSuggestionParser::GetAnswersImageURLs(AsDictionary(answer_json).get(),
+                                              &urls);
+  ASSERT_EQ(1U, urls.size());
+  EXPECT_EQ("https://ssl.gstatic.com/foo.png", urls[0].spec());
+}