FetchMore functionality backend

components/ntp_snippets/content_suggestions_service_unittest.cc

Index: components/ntp_snippets/content_suggestions_service_unittest.cc
diff --git a/components/ntp_snippets/content_suggestions_service_unittest.cc b/components/ntp_snippets/content_suggestions_service_unittest.cc
index 71de5fb68f21cd7c3a1492e51088869397f59642..18b2939115c81b8c6623861be33bcacb0fb29ddd 100644
--- a/components/ntp_snippets/content_suggestions_service_unittest.cc
+++ b/components/ntp_snippets/content_suggestions_service_unittest.cc
@@ -85,6 +85,7 @@ class MockProvider : public ContentSuggestionsProvider {
                void(base::Time begin,
                     base::Time end,
                     const base::Callback<bool(const GURL& url)>& filter));
+  MOCK_METHOD0(FetchMore, void());
   MOCK_METHOD1(ClearCachedSuggestions, void(Category category));
   MOCK_METHOD2(GetDismissedSuggestionsForDebugging,
                void(Category category,
@@ -606,6 +607,14 @@ TEST_F(ContentSuggestionsServiceTest, ShouldForwardClearHistory) {
   service()->ClearHistory(begin, end, filter);
 }
 
+TEST_F(ContentSuggestionsServiceTest, ShouldForwardFetchMore) {
+  Category category = FromKnownCategory(KnownCategories::ARTICLES);
+  MockProvider* provider = RegisterProvider(category);
+  provider->FireCategoryStatusChangedWithCurrentStatus(category);
+  EXPECT_CALL(*provider, FetchMore());
+  service()->FetchMore(category);
+}
+
 TEST_F(ContentSuggestionsServiceTest, DismissAndRestoreCategory) {
   // Register a category with one suggestion.
   Category category = FromKnownCategory(KnownCategories::ARTICLES);