[unit test] Complete all providers unit tests #12

support/include/utils/encrypting_reader.hpp

@@ -174,6 +174,10 @@ public:
   calculate_encrypted_size(std::string_view source_path, bool uses_kdf)
       -> std::uint64_t;
 
+  [[nodiscard]] static auto calculate_encrypted_size(std::uint64_t size,
+                                                     bool uses_kdf)
+      -> std::uint64_t;
+
   [[nodiscard]] auto create_iostream() const -> std::shared_ptr<iostream>;
 
   [[nodiscard]] static constexpr auto get_encrypted_chunk_size()

support/src/utils/encrypting_reader.cpp

@@ -430,11 +430,16 @@ auto encrypting_reader::calculate_encrypted_size(std::string_view source_path,
                            source_path,
                        });
   }
-  auto file_size{opt_size.value()};
 
+  return calculate_encrypted_size(opt_size.value(), uses_kdf);
+}
+
+auto encrypting_reader::calculate_encrypted_size(std::uint64_t size,
+                                                 bool uses_kdf)
+    -> std::uint64_t {
   auto total_chunks = utils::divide_with_ceiling(
-      file_size, static_cast<std::uint64_t>(data_chunk_size_));
-  return file_size + (total_chunks * encryption_header_size) +
+      size, static_cast<std::uint64_t>(data_chunk_size_));
+  return size + (total_chunks * encryption_header_size) +
          (uses_kdf ? kdf_config::size() : 0U);
 }