Contents

require 'spec_helper'

describe "A Problem" do
	before(:each) do
		@problem = Problem.new
		@features = [ Node.features(0.2,0.3,0.4,0.4),
									Node.features(0.1,0.5,0.1,0.9),
									Node.features(0.2,0.2,0.6,0.5),
									Node.features(0.3,0.1,0.5,0.9) ]
	end

	it "examples get stored and retrieved" do
		@problem.set_examples([1,2,1,2], @features)
		labels, examples =  @problem.examples
		labels.size.should == 4
		examples.size.should == 4
		examples.map {|x|x.size}.should == [4,4,4,4]
		examples.first.map {|node| node.index}.should == [0,1,2,3]
		examples.first.map {|node| node.value}.should == [0.2,0.3,0.4,0.4]
	end

	it "can be populated" do
		examples = [Node.features(0.2,0.3,0.4,0.4),
								Node.features(0.1,0.5,0.1,0.9),
								Node.features(0.2,0.2,0.6,0.5),
								Node.features(0.3,0.1,0.5,0.9)]
		@problem.set_examples([1,2,1,2], examples)
	end

	it "can be set twice over" do 
		features = [Node.features(0.2, 0.3, 0.4, 0.4), Node.features(0.3,0.1,0.5,0.9)]
		@problem.set_examples([1,2], features)
		features = [Node.features(0.2, 0.3, 0.4, 0.4), Node.features(0.3,0.1,0.5,0.9)]
		@problem.set_examples([8,2], features)
	end
		
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
rb-libsvm-1.0.5	spec/problem_spec.rb
rb-libsvm-1.0.1	spec/problem_spec.rb