public void GetEdge_With_Ignore_Direction_Param_Throws_When_Invalid_Type_Passed_In_For_Source_Node()
{
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = new DummyBasicNode();
INode nodeB = net.CreateNode();
var ex = Assert.Throws<ArgumentException>(() => net.GetEdge(nodeA, nodeB, true));
}
public void GetEdge_With_Ignore_Direction_Param_Throws_When_NullPassed_In_For_Source_Node()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = null;
INode nodeB = net.CreateNode();
var ex = Assert.Throws<ArgumentNullException>(() => net.GetEdge(nodeA, nodeB, true));
}
public void GetEdge_With_Ignore_Direction_Param_ReturnsEdge(bool ignoreDirection)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge0 = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeA, nodeB, ignoreDirection);
Assert.NotNull(result);
Assert.Same(result, edge0);
Assert.Same(nodeA, edge0.SourceNode);
Assert.Same(nodeB, edge0.DestinationNode);
}
public void GetEdge_With_Ignore_Direction_Param_Returns_Null_If_EdgeDNE(bool ignoreDirection)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
INode nodeC = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeC, nodeA, ignoreDirection);
Assert.Null(result);
}
public void GetEdge_With_Ignore_Direction_Param_If_Nodes_AreReversed(bool ignoreDirection, bool nullExpected)
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeB, nodeA, ignoreDirection);
if (nullExpected)
{
Assert.Null(result);
}
else
{
Assert.NotNull(result);
Assert.Same(result, edge);
}
}
public void GetEdge_Throws_When_Null_Passed_In_For_Souce_Node()
{
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = null;
INode nodeB = net.CreateNode();
var ex = Assert.Throws<ArgumentNullException>(() => net.GetEdge(nodeA, nodeB));
}
public void GetEdge_Throws_When_Invalid_Type_Passed_In_For_Dest_Node()
{
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = new DummyBasicNode();
var ex = Assert.Throws<ArgumentException>(() => net.GetEdge(nodeA, nodeB));
}
public void GetEdge_Returns_Null_If_Nodes_Are_Reversed_But_Edge_Exists()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeB, nodeA);
Assert.Null(result);
}
public void GetEdge_Returns_Null_If_Edge_DNE()
{
//Arrange
var net = new BasicAdjList(Guid.NewGuid());
INode nodeA = net.CreateNode();
INode nodeB = net.CreateNode();
INode nodeC = net.CreateNode();
IEdge edge = net.CreateEdge(nodeA, nodeB);
IEdge result = net.GetEdge(nodeC, nodeA);
Assert.Null(result);
}
