cleanup, updated tests

test/test_decisiontree.rb

@@ -1,26 +1,22 @@
-#The MIT License
+require 'test/helper.rb'
 
-###Copyright (c) 2007 Ilya Grigorik <ilya AT fortehost DOT com>
+describe DecisionTree::ID3Tree do
 
-require File.dirname(__FILE__) + '/test_helper.rb'
-require 'decisiontree'
-
-class TestDecisionTree < Test::Unit::TestCase
-
-  def setup
-    @labels = %w(sun rain)
-    @data = [
-        [1, 0, 1],
-        [0, 1, 0]
+  it "should work with a discrete dataset" do
+    labels = %w(sun rain)
+    data = [
+      [1,0,1],
+      [0,1,0]
     ]
-  end
-  
-  def test_truth
-    dec_tree = DecisionTree::ID3Tree.new(@labels, @data, 1, :discrete)
+
+    dec_tree = DecisionTree::ID3Tree.new(labels, data, 1, :discrete)
     dec_tree.train
-    
-    assert 1, dec_tree.predict([1, 0])
-    assert 0, dec_tree.predict([0, 1])
+
+    dec_tree.predict([1,0]).should == 1
+    dec_tree.predict([0,1]).should == 0
   end
+
+  it "should work with continuous dataset"
+
 end