text: var assert = require('assert'),
      fs = require('fs'),
      dot = require('../src/graph/dotparser.js');
  
  fs.readFile('test/dot.txt', function (err, data) {
      data = String(data);
  
      var graph = dot.parseDOT(data);
  
      assert.deepEqual(graph, {
          "type": "digraph",
          "id": "test_graph",
          "rankdir": "LR",
          "size": "8,5",
          "font": "arial",
          "nodes": [
              {
                  "id": "node1",
                  "attr": {
                      "shape": "doublecircle"
                  }
              },
              {
                  "id": "node2",
                  "attr": {
                      "shape": "doublecircle"
                  }
              },
              {
                  "id": "node3",
                  "attr": {
                      "shape": "doublecircle"
                  }
              },
              {
                  "id": "node4",
                  "attr": {
                      "shape": "diamond",
                      "color": "red"
                  }
              },
              {
                  "id": "node5",
                  "attr": {
                      "shape": "square",
                      "color": "blue",
                      "width": 3
                  }
              },
              {
                  "id": 6,
                  "attr": {
                      "shape": "circle"
                  }
              },
              {
                  "id": "A",
                  "attr": {
                      "shape": "circle"
                  }
              },
              {
                  "id": "B",
                  "attr": {
                      "shape": "circle"
                  }
              },
              {
                  "id": "C",
                  "attr": {
                      "shape": "circle"
                  }
              }
          ],
          "edges": [
              {
                  "from": "node1",
                  "to": "node1",
                  "type": "->",
                  "attr": {
                      "length": 170,
                      "fontSize": 12,
                      "label": "a"
                  }
              },
              {
                  "from": "node2",
                  "to": "node3",
                  "type": "->",
                  "attr": {
                      "length": 170,
                      "fontSize": 12,
                      "label": "b"
                  }
              },
              {
                  "from": "node1",
                  "to": "node4",
                  "type": "--",
                  "attr": {
                      "length": 170,
                      "fontSize": 12,
                      "label": "c"
                  }
              },
              {
                  "from": "node3",
                  "to": "node4",
                  "type": "->",
                  "attr": {
                      "length": 170,
                      "fontSize": 12,
                      "label": "d"
                  }
              },
              {
                  "from": "node4",
                  "to": "node5",
                  "type": "->",
                  "attr": {
                      "length": 170,
                      "fontSize": 12
                  }
              },
              {
                  "from": "node5",
                  "to": 6,
                  "type": "->",
                  "attr": {
                      "length": 170,
                      "fontSize": 12
                  }
              },
              {
                  "from": "A",
                  "to": {
                      "nodes": [
                          {
                              "id": "B",
                              "attr": {
                                  "shape": "circle"
                              }
                          },
                          {
                              "id": "C",
                              "attr": {
                                  "shape": "circle"
                              }
                          }
                      ]
                  },
                  "type": "->",
                  "attr": {
                      "length": 170,
                      "fontSize": 12
                  }
              }
          ],
          "subgraphs": [
              {
                  "nodes": [
                      {
                          "id": "B",
                          "attr": {
                              "shape": "circle"
                          }
                      },
                      {
                          "id": "C",
                          "attr": {
                              "shape": "circle"
                          }
                      }
                  ]
              }
          ]
      });
  });
  
  