[generator][ugc] Skip empty UGCs

generator/generator_tests/ugc_test.cpp

@@ -8,16 +8,32 @@
 #include "base/math.hpp"
 #include "base/osm_id.hpp"
 
+namespace
+{
 std::string g_database(R"LLL(
                        PRAGMA foreign_keys=OFF;
                        BEGIN TRANSACTION;
                        CREATE TABLE ratings (key bigint, value blob);
                        INSERT INTO "ratings" VALUES(9826352,'{"osm_id":9826352,"total_rating":10.34,"based_on":721,"ratings":[{"key":"2","value":3.4},{"key":"2","value":6.0001}],"reviews":[{"id":7864532, "text":{"text":"The best service on the Earth","lang":"en"},"author":"Robert","rating":8.5,"date":1234567}]}');
                        INSERT INTO "ratings" VALUES(9826353,'{"osm_id":9826353,"total_rating":0.34,"based_on":1,"ratings":[{"key":"2","value":3.4},{"key":"3","value":6.0001},{"key":"6","value":0.0001}],"reviews":[{"id":78645323924,"text":{"text":"Изумительно!","lang":"ru"},"author":"Вася","rating":10,"date":1234569}]}');
+                       INSERT INTO "ratings" VALUES(9826354,'{"osm_id":9826354,"total_rating":-1.0,"based_on":1,"ratings":[{"key":"2","value":3.4},{"key":"3","value":6.0001},{"key":"6","value":0.0001}],"reviews":[{"id":78645323924,"text":{"text":"Изумительно!","lang":"ru"},"author":"Вася","rating":10,"date":1234569}]}');
                        CREATE INDEX key_index ON ratings (key);
                        COMMIT;
 )LLL");
 
+ugc::UGC GetUgcForId(uint32_t id)
+{
+  generator::UGCTranslator tr;
+  tr.CreateDb(g_database);
+  osm::Id osmId(id);
+
+  ugc::UGC ugc;
+  bool rc = tr.TranslateUGC(osmId, ugc);
+  TEST(rc, ("Can't translate ugc for", osmId));
+
+  return ugc;
+}
+
 UNIT_TEST(UGC_SmokeTest)
 {
   generator::UGCDB db(":memory:");
@@ -31,15 +47,16 @@ UNIT_TEST(UGC_SmokeTest)
 
 UNIT_TEST(UGC_TranslateRatingTest)
 {
-  generator::UGCTranslator tr;
-  tr.CreateDb(g_database);
-  osm::Id id = osm::Id(9826352);
-
-  ugc::UGC ugc;
-  bool rc = tr.TranslateUGC(id, ugc);
-  TEST(rc, ("Can't translate rating for", id));
+ auto const ugc = GetUgcForId(9826352);
 
   TEST_EQUAL(ugc.m_ratings.size(), 2, ());
   TEST_EQUAL(ugc.m_ratings[0].m_key, "2", ());
   TEST(my::AlmostEqualAbs(ugc.m_ratings[0].m_value, 3.4f, 1e-6f), ());
 }
+
+UNIT_TEST(UGC_TranslateEmptyUgcTest)
+{
+  auto const ugc = GetUgcForId(9826354);
+  TEST(ugc.IsEmpty(), ());
+}
+}  // namespace

generator/ugc_section_builder.cpp

@@ -53,6 +53,9 @@ bool BuildUgcMwmSection(std::string const & srcDbFilename, std::string const & m
     if (!translator.TranslateUGC(it->second, result))
       return;
 
+    if (result.IsEmpty())
+      return;
+
     content.emplace_back(featureId, result);
   });