Contents

require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')

include Fathom

describe ValueDescription do
  
  before(:all) do
    @r1 = PlausibleRange.new(:min => 1, :max => 3, :name => 'r1')
    @r2 = PlausibleRange.new(:min => 1, :max => 3, :name => 'r2')
    @r3 = PlausibleRange.new(:min => 1, :max => 3, :name => 'r3')
    @r4 = PlausibleRange.new(:min => 1, :max => 3, :name => 'r4')
  end
  
  before do
    @vd = ValueDescription.new
  end
  
  it "should be able to initialize with no nodes" do
    @vd.nodes.should be_empty
  end
  
  it "should be able to take a set of nodes to work with" do
    vd = ValueDescription.new @r1, @r2, @r3, @r4
    vd.nodes.should eql([@r1, @r2, @r3, @r4])
  end
  
  it "should respond to the names of the nodes being added" do
    vd = ValueDescription.new @r1, @r2
    vd.r1.should be_a(Float)
    vd.r2.should be_a(Float)
  end
  
  it "should be able to add a node with add_node" do
    @vd.add_node(@r3)
    @vd.r3.should be_a(Float)
  end
  
  it "should be able to add a node with an alternative value method" do
    @vd.add_node(@r3, :name)
    @vd.r3.should eql('r3')
  end
  
  it "should be able to initialize with a hash, to define the value methods" do
    vd = ValueDescription.new @r1 => :rand, @r2 => :name
    vd.r1.should be_a(Float)
    vd.r2.should eql('r2')
  end
  
  it "should convert node names to lower case, underscore values" do
    pr = PlausibleRange.new(:min => 1, :max => 3, :name => 'Test Node')
    vd = ValueDescription.new pr => :name
    vd.test_node.should eql('Test Node')
  end

  it "should respond to process, which by default just adds up the values of the nodes" do
    vd = ValueDescription.new @r1, @r2
    output = vd.process
    sum = vd.last_process.values.inject(0.0) {|s, e| s += e}
    output.should eql(sum)
  end
  
  it "should be able to take an optional block at initialization" do
    vd = ValueDescription.new(@r1 => :name) {|obj|
      obj.r1
    }
    output = vd.process
    output.should eql('r1')
  end
  
end

Version data entries

12 entries across 12 versions & 1 rubygems

Version	Path
fathom-0.3.7	spec/fathom/value_description_spec.rb
fathom-0.3.6	spec/fathom/value_description_spec.rb
fathom-0.3.4	spec/fathom/value_description_spec.rb
fathom-0.3.3	spec/fathom/value_description_spec.rb
fathom-0.3.2	spec/fathom/value_description_spec.rb
fathom-0.3.1	spec/fathom/value_description_spec.rb
fathom-0.3.0	spec/fathom/value_description_spec.rb
fathom-0.2.3	spec/fathom/value_description_spec.rb
fathom-0.2.2	spec/fathom/value_description_spec.rb
fathom-0.2.1	spec/fathom/value_description_spec.rb
fathom-0.2.0	spec/fathom/value_description_spec.rb
fathom-0.1.0	spec/fathom/value_description_spec.rb