public void Test_AddEdge()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.graph = new Graph(GraphType.Digraph, new Stmt_list());
gvp.AddNode("tn1");
gvp.AddNode("tn2");
gvp.AddEdge("tn1", "tn2");
gvp.AddEdge("tn3", "tn4");
gvp.AddEdge("tn2", "tn3");
string tmp = gvp.graph.ToCode();
if (!tmp.Contains("tn1 -> tn2"))
{
Assert.Fail("Edge between existing nodes not found.");
}
if (!tmp.Contains("tn2 -> tn3"))
{
Assert.Fail("Edge between two other edges not found.");
}
if (!tmp.Contains("tn3 -> tn4"))
{
Assert.Fail("Edge between new nodes not found.");
}
}
public void Test_AddAttribute()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.graph = new Graph(GraphType.Digraph, new Stmt_list());
//Graph, Node, Edge attribute
gvp.AddAttribute(AttrType.Graph, new IDisID("x", "y"));
string tmp = gvp.graph.ToCode();
if (!tmp.Contains("graph [x=y;]"))
{
Assert.Fail("Attr_stmt type attribute not found.");
}
//Specific node attribute
gvp.AddNode("a");
gvp.AddAttribute(AttrType.SpecificNode, new IDisID("x", "y"), "a");
tmp = gvp.graph.ToCode();
if (!tmp.Contains("a [x=y;]"))
{
Assert.Fail("Node attribute not found.");
}
//Specific node attribute
gvp.AddEdge("a", "b");
gvp.AddAttribute(AttrType.SpecificEdge, new IDisID("x", "y"), "a", "b");
tmp = gvp.graph.ToCode();
if (!tmp.Contains("a -> b [x=y;]"))
{
Assert.Fail("Edge attribute not found.");
}
}
public void Test_EdgeExists()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.graph = new Graph(GraphType.Digraph, new Stmt_list());
gvp.AddEdge("a", "b");
if (!gvp.EdgeExists("a", "b"))
{
Assert.Fail("Edge not found.");
}
}
public void Test_FindEdge()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.graph = new Graph(GraphType.Digraph, new Stmt_list());
gvp.AddEdge("a", "b");
if (gvp.FindEdge("a", "b") == null)
{
Assert.Fail("Edge not found.");
}
}
public void Test_ChangeGraphType()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.graph = new Graph(GraphType.Digraph, new Stmt_list());
gvp.AddEdge("a", "b");
if (!gvp.graph.ToCode().Contains("->"))
{
Assert.Fail("Edge type is not equal to grapf type before change.");
}
gvp.ChangeGraphType(GraphType.Graph);
if (!gvp.graph.ToCode().Contains("--"))
{
Assert.Fail("Edge type is not equal to graph type after change.");
}
}
public void Test_NodeExists()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.graph = new Graph(GraphType.Digraph, new Stmt_list());
//Node exists
gvp.AddNode("a");
if (!gvp.NodeExists("a"))
{
Assert.Fail("Node not found.");
}
//Node is part of an edge
gvp.AddEdge("a", "b");
if (!gvp.NodeExistsInEdge("a"))
{
Assert.Fail("Node in an edge not found.");
}
}
public void Test_RemoveEdge()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.graph = new Graph(GraphType.Digraph, new Stmt_list());
gvp.AddEdge("a", "b");
gvp.RemoveEdge("a", "b");
if (gvp.EdgeExists("a", "b"))
{
Assert.Fail("Edge found after removal.");
}
if (!gvp.NodeExists("a"))
{
Assert.Fail("Node not found after edge removal.");
}
if (!gvp.NodeExists("b"))
{
Assert.Fail("Node not found after edge removal.");
}
}