spec/tdiff_spec.rb in tdiff-0.1.0 vs spec/tdiff_spec.rb in tdiff-0.2.0

@@ -1,94 +1,13 @@
 require 'spec_helper'
-require 'classes/node'
-require 'tdiff'
+require 'helpers/trees'
+require 'tdiff_examples'
+require 'tdiff/tdiff'
 
 describe TDiff do
-  before(:all) do
-    @tree = Node.new('root', [
-      Node.new('leaf1', [
-        Node.new('subleaf1', []),
-        Node.new('subleaf2', [])
-      ]),
+  include Helpers::Trees
 
-      Node.new('leaf2', [
-        Node.new('subleaf1', []),
-        Node.new('subleaf2', [])
-      ])
-    ])
-
-    @different_root = Node.new('wrong', [])
-
-    @added = Node.new('root', [
-      Node.new('leaf1', [
-        Node.new('subleaf1', []),
-        Node.new('subleaf3', []),
-        Node.new('subleaf2', [])
-      ]),
-
-      Node.new('leaf2', [
-        Node.new('subleaf1', []),
-        Node.new('subleaf2', [])
-      ])
-    ])
-
-    @removed = Node.new('root', [
-      Node.new('leaf1', [
-        Node.new('subleaf1', [])
-      ]),
-
-      Node.new('leaf2', [
-        Node.new('subleaf1', []),
-        Node.new('subleaf2', [])
-      ])
-    ])
-
-    @changed_order = Node.new('root', [
-      Node.new('leaf2', [
-        Node.new('subleaf1', []),
-        Node.new('subleaf2', [])
-      ]),
-
-      Node.new('leaf1', [
-        Node.new('subleaf1', []),
-        Node.new('subleaf2', [])
-      ])
-    ])
-  end
-
-  it "should tell if two trees are identical" do
-    @tree.tdiff(@tree).all? { |change,node|
-      change == ' '
-    }.should == true
-  end
-
-  it "should stop if the root nodes have changed" do
-    changes = @tree.tdiff(@different_root).to_a
-
-    changes.length.should == 2
-
-    changes[0][0].should == '-'
-    changes[0][1].should == @tree
-
-    changes[1][0].should == '+'
-    changes[1][1].should == @different_root
-  end
-
-  it "should tell when sub-nodes are added" do
-    changes = @tree.tdiff(@added).select { |change,node| change == '+' }
-
-    changes.length.should == 1
-    changes[0][0].should == '+'
-    changes[0][1].should == @added.children[0].children[1]
-  end
-
-  it "should tell when sub-nodes are removed" do
-    changes = @tree.tdiff(@removed).select { |change,node| change == '-' }
-
-    changes.length.should == 1
-    changes[0][0].should == '-'
-    changes[0][1].should == @tree.children[0].children[1]
-  end
+  it_should_behave_like 'TDiff', :tdiff
 
   it "should detect when the order of children has changed" do
     changes = @tree.tdiff(@changed_order).to_a
 
     changes.length.should == 5