Contents

require File.dirname(__FILE__) + "/../spec_helper"
require 'graph_image_creator'
include DepGraph

describe GraphImageCreator do
  
  it "should start with no nodes" do
    create_empty_graph.node_count.should == 0
  end
  
  it "should be possible to add nodes" do
    graph = create_graph_with_2_nodes_and_0_edges
    
    graph.node_count.should == 2
    graph.edge_count.should == 0
  end
  
  it "should not be allowed to add a node without a name" do
    lambda {create_empty_graph.add_node('')}.should raise_error
  end
  
  it "should start with no edges" do
    create_empty_graph.edge_count.should == 0
  end
  
  it "should be possible to add an edge" do
    graph = create_graph_with_2_nodes_and_1_edge
    
    graph.node_count.should == 2
    graph.edge_count.should == 1
  end
  
  it "can be reset" do
    graph = create_graph_with_2_nodes_and_1_edge
    
    graph.reset
    graph.node_count.should == 0
    graph.edge_count.should == 0
  end
    
  it "should not be allowed to add edges between non existent nodes" do
    lambda {create_empty_graph.add_edge('no node 1', 'no node 2')}.should raise_error
  end
  
  it "should return true when a new image file is created" do
    graph = create_graph_with_2_nodes_and_1_edge    
    graph.output_generation = no_output_generation
    graph.create_image('graph.png').should be_true
  end
  
  it "should return false when trying to create an empty graph" do
    graph = create_empty_graph
    graph.output_generation = no_output_generation
    graph.create_image('graph.png').should be_false
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
depgraph-0.11.0	spec/UnitTests/graph_image_creator_spec.rb