Use |min| param to query a variable number of suggestions

components/suggestions/suggestions_service_impl_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/suggestions/suggestions_service_impl.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/test/mock_callback.h"
+#include "base/test/scoped_feature_list.h"
 #include "components/signin/core/browser/account_tracker_service.h"
 #include "components/signin/core/browser/fake_profile_oauth2_token_service.h"
 #include "components/signin/core/browser/fake_signin_manager.h"
 #include "components/signin/core/browser/test_signin_client.h"
 #include "components/suggestions/blacklist_store.h"
+#include "components/suggestions/features.h"
 #include "components/suggestions/image_manager.h"
 #include "components/suggestions/proto/suggestions.pb.h"
 #include "components/suggestions/suggestions_store.h"
 #include "components/sync/driver/fake_sync_service.h"
 #include "components/sync/driver/sync_service.h"
 #include "components/sync_preferences/testing_pref_service_syncable.h"
+#include "components/variations/variations_params_manager.h"
+#include "net/base/url_util.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_request_status.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/image/image.h"
 
 using sync_preferences::TestingPrefServiceSyncable;
@@ skipping 292 matching lines @@
   EXPECT_CALL(mock_sync_service_, IsSyncActive()).WillRepeatedly(Return(true));
   suggestions_service_->OnStateChanged(&mock_sync_service_);
 
   ASSERT_EQ(SuggestionsServiceImpl::INITIALIZED_ENABLED_HISTORY,
             suggestions_service_->ComputeSyncState());
 
   // Let any network request run (there shouldn't be one).
   base::RunLoop().RunUntilIdle();
 }
 
+TEST_F(SuggestionsServiceTest, BuildUrlWithDefaultMinZeroParamForFewFeature) {
+  base::test::ScopedFeatureList scoped_feature_list;
+  scoped_feature_list.InitAndEnableFeature(kUseSuggestionsEvenIfFewFeature);
+  std::string min_suggestions;
+  EXPECT_TRUE(net::GetValueForKeyInQuery(
+      SuggestionsServiceImpl::BuildSuggestionsURL(), "min", &min_suggestions));
+  EXPECT_EQ(min_suggestions, "0");
+}
+
 TEST_F(SuggestionsServiceTest, FetchSuggestionsDataSyncNotInitializedEnabled) {
   EXPECT_CALL(mock_sync_service_, IsSyncActive()).WillRepeatedly(Return(false));
   suggestions_service_->OnStateChanged(&mock_sync_service_);
 
   base::MockCallback<SuggestionsService::ResponseCallback> callback;
   EXPECT_CALL(callback, Run(_)).Times(0);
   auto subscription = suggestions_service_->AddCallback(callback.Get());
 
   // Try to fetch suggestions. Since sync is not active, no network request
   // should be sent.
@@ skipping 383 matching lines @@
   EXPECT_CALL(*mock_thumbnail_manager_, GetImageForURL(test_url, _));
   suggestions_service_->GetPageThumbnail(test_url, dummy_callback);
 
   EXPECT_CALL(*mock_thumbnail_manager_, AddImageURL(test_url, thumbnail_url));
   EXPECT_CALL(*mock_thumbnail_manager_, GetImageForURL(test_url, _));
   suggestions_service_->GetPageThumbnailWithURL(test_url, thumbnail_url,
                                                 dummy_callback);
 }
 
 }  // namespace suggestions