Add empty arrays to LC(Array) existing unit test

Author: arthurpassos

ut/array_of_low_cardinality_tests.cpp

@@ -72,7 +72,9 @@ TEST(ArrayOfLowCardinality, InsertAndQuery) {
 
     const auto testData = std::vector<std::vector<std::string>> {
         { "aa", "bb" },
-        { "cc" }
+        {},
+        { "cc" },
+        {}
     };
 
     auto column = buildTestColumn(testData);
@@ -96,4 +98,4 @@ TEST(ArrayOfLowCardinality, InsertAndQuery) {
           }
       }
     );
-}
+}