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.");
}
}
public void Test_ClearGraph()
{
GraphVizProcessor gvp = new GraphVizProcessor();
gvp.graph = new Graph(GraphType.Digraph, new Stmt_list());
gvp.AddNode("a");
gvp.ClearGraph();
if (gvp.NodeExists("a"))
{
Assert.Fail("Node found after clearing graph.");
}
}
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.");
}
}
