Rakefile in saxlsx-0.3.0 vs Rakefile in saxlsx-1.0.0

@@ -2,5 +2,73 @@
 require "rspec/core/rake_task"
 
 Bundler::GemHelper.install_tasks
 RSpec::Core::RakeTask.new(:spec)
 task :default => :spec
+
+
+task :bench do
+  require 'benchmark'
+  require 'axlsx'
+  require 'saxlsx'
+  require 'rubyXL'
+  require 'simple_xlsx_reader'
+  require 'creek'
+
+  path = "tmp/bench.xlsx"
+  unless File.exists?(path)
+    puts "* Generating #{path}"
+    FileUtils.mkdir_p File.dirname(path)
+    Axlsx::Package.new do |p|
+      money_style = p.workbook.styles.add_style(
+        num_fmt: 5, format_code: "€0.000"
+      )
+      p.workbook.add_worksheet(:name => "Pie Chart") do |sheet|
+        10000.times do
+          sheet.add_row(
+            [Date.today, Time.now, 1000, 3.14, "Long" * 100],
+            types: [:date, :time, :integer, :float, :string],
+            style: [nil, nil, nil, money_style, nil]
+          )
+        end
+      end
+      p.use_shared_strings = true
+      p.serialize(path)
+    end
+  end
+
+  Benchmark.benchmark('', 20) do |x|
+    x.report "creek" do
+      w = Creek::Book.new path
+      w.sheets.each do |s|
+        s.rows.each do |r|
+          r.values.inspect
+        end
+      end
+    end
+    x.report "rubyXL" do
+      w = RubyXL::Parser.parse path
+      w.worksheets.each do |s|
+        s.each do |r|
+          r.cells.map(&:value).inspect
+        end
+      end
+    end
+    x.report "saxlsx" do
+      Saxlsx::Workbook.open path do |w|
+        w.sheets.each do |s|
+          s.rows.each do |r|
+            r.to_a.inspect
+          end
+        end
+      end
+    end
+    x.report "simple_xlsx_reader" do
+      w = SimpleXlsxReader.open path
+      w.sheets.each do |s|
+        s.rows.each do |r|
+          r.to_a.inspect
+        end
+      end
+    end
+  end
+end
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