public static void NoLeadingNumberTest()
{
var id = '1' + GetLongId();
var input = "digraph " + id + " { A; }";
var graph = GraphParser.GetGraph(input);
Assert.AreNotEqual(id, graph.Id);
Assert.Catch(() => GraphParser.SyntaxChecker(input));
}
public static void SpecialCharacterIdsTest()
{
var id = GetLongId();
var input = "digraph " + id + " { A; }";
var graph = GraphParser.GetGraph(input);
Assert.AreEqual(id, graph.Id);
//TODO: This should be true but apparently graphviz does not support its own grammar...
//Assert.IsTrue(GraphParser.SyntaxChecker(input));
}
public static void GraphTypeTest()
{
var input = TestHelper.ExampleDot.Replace("digraph {", "graph MyId {");
var graph = GraphParser.GetGraph(input);
Assert.IsFalse(graph.IsDirected);
Assert.IsFalse(graph.IsStrict);
Assert.IsTrue(graph.Id == "MyId");
CheckIdConsistencies(graph);
Assert.IsTrue(graph.GetEdges().GroupBy(e => new { e.SourceNode, e.EndNode }).Any(c => c.Count() > 1));
var output = graph.ToDot();
Assert.IsTrue(output.StartsWith("graph MyId {", StringComparison.OrdinalIgnoreCase));
}
public static void DuplicateNodesTest()
{
var input = "A\nA";
var graph = GraphParser.GetGraph(FormattableString.Invariant($"digraph {{\n{input}\n}}"));
var output = graph.ToDot();
var expectedOutput = "digraph GraphId {\n A\n}\n";
Assert.AreEqual(expectedOutput, output);
input = "A->B\nA";
graph = GraphParser.GetGraph(FormattableString.Invariant($"digraph {{\n{input}\n}}"));
output = graph.ToDot();
expectedOutput = "digraph GraphId {\n A -> B\n}\n";
Assert.AreEqual(expectedOutput, output);
}
public static void EmptyGraphTest()
{
var input = "";
var graph = GraphParser.GetGraph(FormattableString.Invariant($"digraph {{\n{input}\n}}"));
Assert.IsTrue(!graph.GetNodes().Any());
Assert.IsTrue(!graph.GetEdges().Any());
Assert.IsTrue(!graph.GetSubGraphs().Any());
Assert.IsTrue(!graph.GetAttributes().Any());
Assert.IsTrue(!graph.GetNodeAttributes().Any());
Assert.IsTrue(!graph.GetEdgeAttributes().Any());
var output = graph.ToDot();
var expectedOutput = "digraph GraphId {\n}\n";
Assert.AreEqual(expectedOutput, output);
}
