public void BecauseWithNArguments()
{
// ACT
// ReSharper disable once HeapView.BoxingAllocation
DesignByContractViolationException exception = Fail.Because("Always {0} {1} {2} {3}", "fails", 1, "times", "frequently");
// ASSERT
Assert.That(exception, Is.Not.Null);
Assert.That(exception.Message, Is.EqualTo("Always fails 1 times frequently"));
}
public void BecauseWith1Argument()
{
// ACT
// ReSharper disable once HeapView.BoxingAllocation
DesignByContractViolationException exception = Fail.Because("Always {0}", 1);
// ASSERT
Assert.That(exception, Is.Not.Null);
Assert.That(exception.Message, Is.EqualTo("Always 1"));
}
public Queue <T> Sort()
{
var sortedQueue = new Queue <T>(); // create, even if it stays empty
var outputQueue = new Queue <T>(); // with predecessorCount == 0
// (1) go through all the nodes
// if the node's predecessorCount == 0
// add it to the outputQueue
foreach (KeyValuePair <T, NodeInfo> kvp in this.nodes)
{
if (kvp.Value.PredecessorCount == 0)
{
outputQueue.Enqueue(kvp.Key);
}
}
// (2) process the output Queue
// output the key
// delete the key from Nodes
// foreach successor
// decrement its predecessorCount
// if it becomes zero
// add it to the output Queue
while (outputQueue.Count != 0)
{
T nodeKey = outputQueue.Dequeue();
sortedQueue.Enqueue(nodeKey); // add it to sortedQueue
NodeInfo nodeInfo = this.nodes[nodeKey];
this.nodes.Remove(nodeKey); // remove it from Nodes
foreach (T successor in nodeInfo.Successors)
{
if (--this.nodes[successor].PredecessorCount == 0)
{
outputQueue.Enqueue(successor);
}
}
nodeInfo.Clear();
}
// outputQueue is empty here
if (this.nodes.Count != 0)
{
//// there is at least one cycle
throw Fail.Because("There is at least one cycle in the graph. It cannot be sorted topologically.");
}
return(sortedQueue);
}
private IContextStorage <SessionsContainer> GetContextStorage()
{
foreach (var storageType in preferredContextStorages)
{
var storageCandidates = this.sessionStorages.Where(s => storageType.IsInstanceOfType(s));
var firstAvailable = storageCandidates.FirstOrDefault(x => x.IsAvailable());
if (firstAvailable != null)
{
return(firstAvailable);
}
}
throw Fail.Because("There is no context storage available - are you missing declaration: using(new " + nameof(SessionThreadStaticScope) +
"()) {{ DATABASE ACCESS CODE; }}");
}