public void Constructor()
{
var edgeExtremity = new GraphvizEdgeExtremity(false);
CheckEdgeExtremity(edgeExtremity, false);
edgeExtremity = new GraphvizEdgeExtremity(true);
CheckEdgeExtremity(edgeExtremity, true);
#region Local function
void CheckEdgeExtremity(
GraphvizEdgeExtremity extremity,
bool head)
{
Assert.AreEqual(head, extremity.IsHead);
Assert.IsTrue(extremity.IsClipped);
Assert.IsNull(extremity.Url);
Assert.IsFalse(extremity.IsHtmlLabel);
Assert.IsNull(extremity.Label);
Assert.IsNull(extremity.ToolTip);
Assert.IsNull(extremity.Logical);
Assert.IsNull(extremity.Same);
}
#endregion
}
public void AddParameters(
[NotNull] GraphvizEdgeExtremity extremity,
[NotNull] Dictionary <string, object> expectedParameters)
{
var parameters = new Dictionary <string, object>();
extremity.AddParameters(parameters);
CollectionAssert.AreEquivalent(expectedParameters, parameters);
}
public void AddParameters_Throws()
{
// ReSharper disable AssignNullToNotNullAttribute
var extremity = new GraphvizEdgeExtremity(false);
Assert.Throws <ArgumentNullException>(() => extremity.AddParameters(null));
extremity = new GraphvizEdgeExtremity(true);
Assert.Throws <ArgumentNullException>(() => extremity.AddParameters(null));
// ReSharper restore AssignNullToNotNullAttribute
}
public void Tail()
{
var edge = new GraphvizEdge();
if (edge.Tail is null)
{
throw new InvalidOperationException($"Edge has null {nameof(GraphvizEdge.Tail)}.");
}
var tailExtremity = new GraphvizEdgeExtremity(false);
edge.Tail = tailExtremity;
Assert.AreSame(tailExtremity, edge.Tail);
}
public void Head()
{
var edge = new GraphvizEdge();
if (edge.Head is null)
{
throw new InvalidOperationException($"Edge has null {nameof(GraphvizEdge.Head)}.");
}
var headExtremity = new GraphvizEdgeExtremity(true);
edge.Head = headExtremity;
Assert.AreSame(headExtremity, edge.Head);
}
