Contents

require "spec_helper"

describe "construction of a Node" do
	it "using the properties" do
		n = Node.new
		n.index = 11
		n.value = 0.11
		n.index.should == 11
		n.value.should be_within(0.0001).of(0.11)
	end

	it "using the :[] method" do
		n = Node[12, 0.12]
		n.index.should == 12
		n.value.should be_within(0.00001).of(0.12)
	end

	it "using the constructor parameters" do
		n = Node.new(14, 0.14)
		n.index.should == 14
		n.value.should be_within(0.0001).of(0.14)
	end
end

describe "A Node" do
	before do
		@node = Node.new
	end

	it "can be created" do
		@node.should_not be_nil
	end

	it "does not segfault on setting properties" do
		@node.index = 99
		@node.index.should == 99
		@node.value = 3.141
		@node.value.should be_within(0.00001).of(3.141)
	end

	it "has inited properties" do
		@node.index.should == 0
		@node.value.should be_within(0.00001).of(0)
	end

	it "class can create nodes from an array" do
		ary = Node.features([0.1, 0.2, 0.3, 0.4, 0.5])
		ary.map {|n| n.class.should == Node}
		ary.map {|n| n.value }.should == [0.1, 0.2, 0.3, 0.4, 0.5]
	end

	it "class can create nodes from variable parameters" do
		ary = Node.features(0.1, 0.2, 0.3, 0.4, 0.5)
		ary.map {|n| Node.should === n }
		ary.map {|n| n.value }.should == [0.1, 0.2, 0.3, 0.4, 0.5]
	end

	it "class can create nodes from hash" do
		ary = Node.features(3=>0.3, 5=>0.5, 6=>0.6, 10=>1.0)
		ary.map {|n| n.class.should == Node}
		ary.map {|n| n.value }.sort.should == [0.3, 0.5, 0.6, 1.0]
		ary.map {|n| n.index }.sort.should == [3, 5, 6, 10]
	end

	it "implements a value-like equality, not identity-notion" do
		Node[1, 0.1].should == Node[1, 0.1]
	end
end

Version data entries

2 entries across 2 versions & 1 rubygems

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