Sending LanguageModel info to suggestions server

components/ntp_snippets/remote/ntp_snippets_fetcher_unittest.cc

 // 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/ntp_snippets/remote/ntp_snippets_fetcher.h"
 
 #include <map>
 #include <utility>
 
 #include "base/json/json_reader.h"
@@ skipping 146 matching lines @@
         fake_token_service_(new FakeProfileOAuth2TokenService()),
         pref_service_(new TestingPrefServiceSimple()),
         test_lang_("en-US"),
         test_url_(gurl) {
     RequestThrottler::RegisterProfilePrefs(pref_service_->registry());
 
     snippets_fetcher_ = base::MakeUnique<NTPSnippetsFetcher>(
         fake_signin_manager_.get(), fake_token_service_.get(),
         scoped_refptr<net::TestURLRequestContextGetter>(
             new net::TestURLRequestContextGetter(mock_task_runner_.get())),
-        pref_service_.get(), &category_factory_, base::Bind(&ParseJsonDelayed),
-        kAPIKey);
+        pref_service_.get(), &category_factory_, nullptr,
+        base::Bind(&ParseJsonDelayed), kAPIKey);
 
     snippets_fetcher_->SetCallback(
         base::Bind(&MockSnippetsAvailableCallback::WrappedRun,
                    base::Unretained(&mock_callback_)));
     snippets_fetcher_->SetTickClockForTesting(
         mock_task_runner_->GetMockTickClock());
     test_excluded_.insert("1234567890");
     // Increase initial time such that ticks are non-zero.
     mock_task_runner_->FastForwardBy(base::TimeDelta::FromMilliseconds(1234));
   }
@@ skipping 122 matching lines @@
 }
 
 TEST_F(NTPSnippetsFetcherTest, BuildRequestUnauthenticated) {
   NTPSnippetsFetcher::RequestParams params;
   params.only_return_personalized_results = false;
   params.host_restricts = {};
   params.count_to_fetch = 10;
   params.excluded_ids = {};
   params.interactive_request = true;
 
-
   params.fetch_api = NTPSnippetsFetcher::CHROME_READER_API;
   EXPECT_THAT(params.BuildRequest(),
               EqualsJSON("{"
                          "  \"response_detail_level\": \"STANDARD\","
                          "  \"advanced_options\": {"
                          "    \"local_scoring_params\": {"
                          "      \"content_params\": {"
                          "        \"only_return_personalized_results\": false"
                          "      },"
                          "      \"content_restricts\": ["
@@ skipping 63 matching lines @@
                          "    \"080\", \"081\", \"082\", \"083\", \"084\","
                          "    \"085\", \"086\", \"087\", \"088\", \"089\","
                          "    \"090\", \"091\", \"092\", \"093\", \"094\","
                          "    \"095\", \"096\", \"097\", \"098\", \"099\""
                          // Truncated to 100 entries. Currently, they happen to
                          // be those lexically first.
                          "  ]"
                          "}"));
 }
 
+TEST_F(NTPSnippetsFetcherTest, BuildRequestWithTwoLanguages) {
+  NTPSnippetsFetcher::RequestParams params;
+  params.only_return_personalized_results = false;
+  params.host_restricts = {};
+  params.count_to_fetch = 10;
+  params.interactive_request = true;
+  params.ui_language.language_code = "en";
+  params.ui_language.frequency = 0.5f;
+  params.other_top_language.language_code = "de";
+  params.other_top_language.frequency = 0.5f;
+
+  params.fetch_api = NTPSnippetsFetcher::CHROME_CONTENT_SUGGESTIONS_API;
+  EXPECT_THAT(params.BuildRequest(),
+              EqualsJSON("{"
+                         "  \"regularlyVisitedHostNames\": [],"
+                         "  \"priority\": \"USER_ACTION\","
+                         "  \"excludedSuggestionIds\": [],"
+                         "  \"top_languages\": ["
+                         "    {"
+                         "      \"language\" : \"en\","
+                         "      \"frequency\" : 0.5"
+                         "    },"
+                         "    {"
+                         "      \"language\" : \"de\","
+                         "      \"frequency\" : 0.5"
+                         "    }"
+                         "  ]"
+                         "}"));
+}
+
+TEST_F(NTPSnippetsFetcherTest, BuildRequestWithUILanguageOnly) {
+  NTPSnippetsFetcher::RequestParams params;
+  params.only_return_personalized_results = false;
+  params.host_restricts = {};
+  params.count_to_fetch = 10;
+  params.interactive_request = true;
+  params.ui_language.language_code = "en";
+  params.ui_language.frequency = 0.5f;
+
+  params.fetch_api = NTPSnippetsFetcher::CHROME_CONTENT_SUGGESTIONS_API;
+  EXPECT_THAT(params.BuildRequest(),
+              EqualsJSON("{"
+                         "  \"regularlyVisitedHostNames\": [],"
+                         "  \"priority\": \"USER_ACTION\","
+                         "  \"excludedSuggestionIds\": [],"
+                         "  \"top_languages\": [{"
+                         "    \"language\" : \"en\","
+                         "    \"frequency\" : 0.5"
+                         "  }]"
+                         "}"));
+}
+
+TEST_F(NTPSnippetsFetcherTest, BuildRequestWithOtherLanguageOnly) {
+  NTPSnippetsFetcher::RequestParams params;
+  params.only_return_personalized_results = false;
+  params.host_restricts = {};
+  params.count_to_fetch = 10;
+  params.interactive_request = true;
+  params.other_top_language.language_code = "de";
+  params.other_top_language.frequency = 0.5f;
+
+  params.fetch_api = NTPSnippetsFetcher::CHROME_CONTENT_SUGGESTIONS_API;
+  EXPECT_THAT(params.BuildRequest(),
+              EqualsJSON("{"
+                         "  \"regularlyVisitedHostNames\": [],"
+                         "  \"priority\": \"USER_ACTION\","
+                         "  \"excludedSuggestionIds\": [],"
+                         "  \"top_languages\": [{"
+                         "    \"language\" : \"de\","
+                         "    \"frequency\" : 0.5"
+                         "  }]"
+                         "}"));
+}
+
 TEST_F(NTPSnippetsFetcherTest, ShouldNotFetchOnCreation) {
   // The lack of registered baked in responses would cause any fetch to fail.
   FastForwardUntilNoTasksRemain();
   EXPECT_THAT(histogram_tester().GetAllSamples(
                   "NewTabPage.Snippets.FetchHttpResponseOrErrorCode"),
               IsEmpty());
   EXPECT_THAT(histogram_tester().GetAllSamples("NewTabPage.Snippets.FetchTime"),
               IsEmpty());
   EXPECT_THAT(snippets_fetcher().last_status(), IsEmpty());
 }
@@ skipping 363 matching lines @@
     const NTPSnippetsFetcher::OptionalSnippets& snippets) {
   if (snippets) {
     // Matchers above aren't any more precise than this, so this is sufficient
     // for test-failure diagnostics.
     return os << "list with " << snippets->size() << " elements";
   }
   return os << "null";
 }
 
 }  // namespace ntp_snippets