hived_fixture should override shared-file-size setting if explicit va…

…lue was not specified at fixture configuration (to avoid using hived default: 24G)

tests/unit/db_fixture/hived_fixture.cpp

@@ -53,8 +53,7 @@ void hived_fixture::set_logging_config( const fc::optional< fc::logging_config >
   }
 }
 
-void hived_fixture::postponed_init_impl( bool remove_db_files,
-  const config_arg_override_t& config_arg_overrides )
+void hived_fixture::postponed_init_impl( bool remove_db_files, config_arg_override_t config_arg_overrides )
 {
   try
   {
@@ -77,6 +76,14 @@ void hived_fixture::postponed_init_impl( bool remove_db_files,
         { "rc-stats-report-type", { "NONE" } }
       };
 
+      if (std::find_if(config_arg_overrides.cbegin(), config_arg_overrides.cend(),
+          [=](const config_arg_override_t::value_type& item) -> bool { return item.first == "shared-file-size"; }) == config_arg_overrides.cend())
+      {
+        /// By default limit shm size to 64MB for unit tests.
+        config_arg_overrides.emplace_back(config_arg_override_t::value_type(
+          { "shared-file-size", { std::to_string(1024 * 1024 * hived_fixture::shared_file_size_in_mb_64) } }));
+      }
+
       if( not config_arg_overrides.empty() )
         std::copy_if( config_arg_overrides.begin(),
                       config_arg_overrides.end(),

tests/unit/db_fixture/hived_fixture.hpp

@@ -71,7 +71,7 @@ struct hived_fixture : public database_fixture
   bool push_block( const std::shared_ptr<full_block_type>& b, uint32_t skip_flags = 0 );
 
   private:
-    void postponed_init_impl( bool remove_db_files, const config_arg_override_t& config_arg_overrides );
+    void postponed_init_impl( bool remove_db_files, config_arg_override_t config_arg_overrides );
   private:
     hive::plugins::chain::chain_plugin* _chain = nullptr;
     const hive::chain::block_read_i* _block_reader = nullptr;