1 files changed, 0 insertions, 47 deletions
diff --git a/lib/tsort.rb b/lib/tsort.rb
index 9fc4feadcd..aa562ad1c5 100644
--- a/lib/tsort.rb
+++ b/lib/tsort.rb
@@ -241,50 +241,3 @@ module TSort
     raise NotImplementedError.new
   end
 end
-
-if __FILE__ == $0
-  require 'test/unit'
-
-  class TSortHash < Hash # :nodoc:
-    include TSort
-    alias tsort_each_node each_key
-    def tsort_each_child(node, &block)
-      fetch(node).each(&block)
-    end
-  end
-
-  class TSortArray < Array # :nodoc:
-    include TSort
-    alias tsort_each_node each_index
-    def tsort_each_child(node, &block)
-      fetch(node).each(&block)
-    end
-  end
-
-  class TSortTest < Test::Unit::TestCase # :nodoc:
-    def test_dag
-      h = TSortHash[{1=>[2, 3], 2=>[3], 3=>[]}]
-      assert_equal([3, 2, 1], h.tsort)
-      assert_equal([[3], [2], [1]], h.strongly_connected_components)
-    end
-
-    def test_cycle
-      h = TSortHash[{1=>[2], 2=>[3, 4], 3=>[2], 4=>[]}]
-      assert_equal([[4], [2, 3], [1]],
-        h.strongly_connected_components.map {|nodes| nodes.sort})
-      assert_raise(TSort::Cyclic) { h.tsort }
-    end
-
-    def test_array
-      a = TSortArray[[1], [0], [0], [2]]
-      assert_equal([[0, 1], [2], [3]],
-        a.strongly_connected_components.map {|nodes| nodes.sort})
-
-      a = TSortArray[[], [0]]
-      assert_equal([[0], [1]],
-        a.strongly_connected_components.map {|nodes| nodes.sort})
-    end
-  end
-
-end
-