Contents

require_relative '../../lib/rgraph/link'
require_relative '../../lib/rgraph/node'


describe Link do
  describe "creates a link without a weight" do
    subject { Link.new(source: Node.new(id: 1), target: Node.new(id: 2), years: [2011, 2012]) }
    its(:source) { should be_kind_of Node }
    its(:target) { should be_kind_of Node }
    its(:weight) { should == 1 }
    its(:years) { should == [2011, 2012] }

    it "checks the creation of neighbours" do
      expect(subject.source.neighbours).to eq([subject.target])
      expect(subject.target.neighbours).to eq([subject.source])
    end

    it "checks link's direction" do
      link = Link.new(source: Node.new(id: 1), target: Node.new(id: 2), type: 'directed')
      expect(link.source.neighbours.count).to eq(1)
      expect(link.target.neighbours.count).to eq(0)
    end

  end

  describe "creates a link passing a weight" do
    subject { Link.new(source: Node.new(id: 00001), target: Node.new(id: 00002), weight: 4, years: [2011, 2012]) }
    its(:weight) { should == 4 }

  end

  it "doesn't create a link without source" do
    expect { Link.new(target: Node.new(id: 00001)) }.to raise_exception("source cant be nil")
  end

  it "doesn't create a link without target" do
    expect { Link.new(source: Node.new(id: 00001)) }.to raise_exception("target cant be nil")
  end

  it "doesn't create a link with wrong source type" do
    expect { Link.new(source: "Lucas", target: Node.new(id: 1)) }.to raise_exception("source must be of type Node")
  end

  it "doesn't create a link with wrong target type" do
    expect { Link.new(source: Node.new(id: 1), target: "Lucas") }.to raise_exception("target must be of type Node")
  end

  it "sets default type as 'undirected'" do
    expect(Link.new(source: Node.new(id: 1), target: Node.new(id: 2)).type).to eq('undirected')
  end

end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
rgraph-0.0.15	spec/rgraph/link_spec.rb
rgraph-0.0.14	spec/rgraph/link_spec.rb
rgraph-0.0.13	spec/rgraph/link_spec.rb
rgraph-0.0.12	spec/rgraph/link_spec.rb
rgraph-0.0.11	spec/rgraph/link_spec.rb
rgraph-0.0.10	spec/rgraph/link_spec.rb