Treat missing marshal files as empty record sets

.rubocop.yml

@@ -60,6 +60,9 @@ Style/Lambda:
 Style/MultilineBlockChain:
   Enabled: false
 
+Style/OneClassPerFile:
+  Enabled: false
+
 Style/StringLiterals:
   Enabled: false
 

CHANGELOG.md

@@ -0,0 +1,19 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.1] - 2026-05-18
+
+### Fixed
+- `MarshalLoader` no longer raises `Errno::ENOENT` when a dump file is missing; the corresponding table is loaded as an empty record set, matching `QueryLoader`'s fallback for unavailable tables.
+
+## [1.0.0] - 2025-12-26
+
+### Added
+- Initial public release.
+
+[1.0.1]: https://github.com/aktsk/simple_master/compare/v1.0.0...v1.0.1
+[1.0.0]: https://github.com/aktsk/simple_master/releases/tag/v1.0.0

lib/simple_master/loader/marshal_loader.rb

@@ -4,10 +4,15 @@ module SimpleMaster
   class Loader
     class MarshalLoader < Loader
       def read_raw(table)
-        File.read("#{@options[:path]}/#{table.klass.table_name}.marshal")
+        path = "#{@options[:path]}/#{table.klass.table_name}.marshal"
+        return nil unless File.exist?(path)
+
+        File.read(path)
       end
 
       def build_records(_klass, raw)
+        return [] if raw.nil?
+
         Marshal.load(raw) # rubocop:disable Security/MarshalLoad
       end
     end

lib/simple_master/master/queryable.rb

@@ -42,7 +42,7 @@ def insert_queries(records, on_duplicate_key_update = false, batch_size: 10000)
                   else
                     record.send(method_name)
                   end
-              }.join(", ").then { "(#{_1})" }
+                }.join(", ").then { "(#{_1})" }
             }.join(", \n")
 
           "INSERT INTO `#{table_name}` \n#{sql_columns} VALUES \n#{values_sql}#{on_duplicate_key_update_sql};\n"

lib/simple_master/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module SimpleMaster
-  VERSION = "1.0.0"
+  VERSION = "1.0.1"
 end

spec/simple_master/loader/marshal_loader_spec.rb

@@ -23,4 +23,19 @@
       end
     end
   end
+
+  it "treats missing marshal files as empty record sets instead of raising" do
+    Dir.mktmpdir do |dir|
+      loader = described_class.new(path: dir)
+      dataset = SimpleMaster::Storage::Dataset.new(loader: loader)
+
+      expect { dataset.load }.not_to raise_error
+
+      SimpleMaster.use_dataset(dataset) do
+        expect(Weapon.all).to eq([])
+        expect(Level.all).to eq([])
+        expect(Enemy.all).to eq([])
+      end
+    end
+  end
 end