public void Should_Throw_If_Node_Already_Is_Present_In_Graph()
{
// Given
var graph = new CakeGraph();
graph.Add("start");
// When
var result = Record.Exception(() => graph.Add("start"));
// Then
Assert.IsType <CakeException>(result);
Assert.Equal("Node has already been added to graph.", result.Message);
}
public void Should_Not_Find_Non_Existing_Node_In_Graph()
{
// Given
var graph = new CakeGraph();
graph.Add("start");
// When, Then
Assert.False(graph.Exist("other"));
}
public void Should_Find_Node_In_Graph_Regardless_Of_Casing()
{
// Given
var graph = new CakeGraph();
graph.Add("start");
// When, Then
Assert.True(graph.Exist("START"));
}
public void Should_Find_Node_In_Graph()
{
// Given
var graph = new CakeGraph();
graph.Add("start");
// When, Then
Assert.True(graph.Exist("start"));
}
public void Should_Add_Node_To_Graph()
{
// Given
var graph = new CakeGraph();
// When
graph.Add("start");
// Then
Assert.Equal(1, graph.Nodes.Count);
}
public void Should_Throw_If_Provided_Node_Is_Null()
{
// Given
var graph = new CakeGraph();
// When
var result = Record.Exception(() => graph.Add(null));
// Then
Assert.IsArgumentNullException(result, "node");
}
public void Should_Throw_If_Provided_Node_Is_Null()
{
// Given
var graph = new CakeGraph();
// When
var exception = Record.Exception(() => graph.Add(null));
// Then
Assert.IsType <ArgumentNullException>(exception);
Assert.Equal("node", ((ArgumentNullException)exception).ParamName);
}
public void Should_Add_End_Node_If_Missing_To_Node_Collection()
{
// Given
var graph = new CakeGraph();
graph.Add("start");
// When
graph.Connect("start", "end");
// Then
Assert.Equal(2, graph.Nodes.Count);
}
