fix test for expansion generator

diff --git a/spec/generator/expansion_spec.rb b/spec/generator/expansion_spec.rb
index 359840f..8106d3d 100644 (file)
--- a/spec/generator/expansion_spec.rb
+++ b/spec/generator/expansion_spec.rb
@@ -22,6 +22,7 @@ module Mint::Generator
       before do
         options = {
           :order_min  => 2, :order_max  => 2,
+          :factor_min => 2, :factor_max => 2,
         }
         @problems = subject.generate(@defaults.merge(options))
       end
@@ -34,6 +35,7 @@ module Mint::Generator
       before do
         options = {
           :order_min  => 3, :order_max  => 3,
+          :factor_min => 2, :factor_max => 2,
         }
         @problems = subject.generate(@defaults.merge(options))
       end