public void SortThrowsTopologicalSortExceptionExceptionWhenGraphContainsLoops()
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
graph.AddSequence(new[] { 61, 11 });
graph.Sort().ToArray();
}
public void GenerateGraphGeneratesTriangleGraphStructure1_BackSequencesTest()
{
var target = GraphGenerator.GenerateGraph(3, 2, 4);
GraphTestHelper.AssertConsistsOfBackSequences(target, new[]
{
new[] { 8, 0 },
new[] { 8, 1 },
new[] { 8, 2 },
new[] { 8, 3 },
new[] { 9, 0 },
new[] { 9, 1 },
new[] { 9, 2 },
new[] { 9, 3 },
new[] { 10, 4 },
new[] { 10, 5 },
new[] { 10, 6 },
new[] { 10, 7 },
new[] { 11, 4 },
new[] { 11, 5 },
new[] { 11, 6 },
new[] { 11, 7 },
new[] { 12, 8 },
new[] { 12, 9 },
new[] { 12, 10 },
new[] { 12, 11 },
new[] { 13, 8 },
new[] { 13, 9 },
new[] { 13, 10 },
new[] { 13, 11 },
});
}
public void GenerateGraphGeneratesTriangleGraphStructure2()
{
var target = GraphGenerator.GenerateGraph(3, 2, 4);
GraphTestHelper.AssertConsistsOfSequences(target, new[]
{
new[] { 0, 8 },
new[] { 1, 8 },
new[] { 2, 8 },
new[] { 3, 8 },
new[] { 0, 9 },
new[] { 1, 9 },
new[] { 2, 9 },
new[] { 3, 9 },
new[] { 4, 10 },
new[] { 5, 10 },
new[] { 6, 10 },
new[] { 7, 10 },
new[] { 4, 11 },
new[] { 5, 11 },
new[] { 6, 11 },
new[] { 7, 11 },
new[] { 8, 12 },
new[] { 9, 12 },
new[] { 10, 12 },
new[] { 11, 12 },
new[] { 8, 13 },
new[] { 9, 13 },
new[] { 10, 13 },
new[] { 11, 13 },
});
}
public void GenerateGraphGeneratesBackTriangleGraphStructure2()
{
var target = GraphGenerator.GenerateGraph(3, 4, 2);
GraphTestHelper.AssertConsistsOfSequences(target, new[]
{
new[] { 0, 2 },
new[] { 0, 3 },
new[] { 0, 4 },
new[] { 0, 5 },
new[] { 1, 2 },
new[] { 1, 3 },
new[] { 1, 4 },
new[] { 1, 5 },
new[] { 2, 6 },
new[] { 2, 7 },
new[] { 2, 8 },
new[] { 2, 9 },
new[] { 3, 6 },
new[] { 3, 7 },
new[] { 3, 8 },
new[] { 3, 9 },
new[] { 4, 10 },
new[] { 4, 11 },
new[] { 4, 12 },
new[] { 4, 13 },
new[] { 5, 10 },
new[] { 5, 11 },
new[] { 5, 12 },
new[] { 5, 13 },
});
}
public void GetNodesReturnsNodesOnTheLevel(int level, int[] expectedNodes)
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
GraphTestHelper.AssertCollectionsConsistsOfNodes(expectedNodes,
graph.GetNodes(level));
GraphTestHelper.AssertNodesAreOrderedByLevel(graph.GetNodes(level));
}
public void GetNodesWithBetweenReturnsNodesOnTheLevelsInTheRange(int levelFrom, int levelTo, int[] expectedNodes)
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
GraphTestHelper.AssertCollectionsConsistsOfNodes(expectedNodes,
graph.GetNodesBetween(levelFrom, levelTo));
GraphTestHelper.AssertNodesAreOrderedByLevel(graph.GetNodesBetween(levelFrom, levelTo));
}
public void SortReturnsNodesInTopologicalOrder()
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
var nodes = graph.Sort();
Assert.AreEqual(20, nodes.Count());
AssertNodesAreInTopologicalOrder(nodes);
}
public void DescendantsReturnsDescendantsOfTheNode(int node, int[] expectedDescendants)
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
GraphTestHelper.AssertCollectionsConsistsOfNodes(expectedDescendants,
graph.Find(node).Descendants);
GraphTestHelper.AssertNodesAreOrderedByLevel(graph.Find(node).Descendants);
}
public void GetNeighboursReturnsNeighboursOfTheNodeInTheRangeOfLevels(int node, int[] expectedNeighbours)
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
GraphTestHelper.AssertCollectionsConsistsOfNodes(expectedNeighbours,
graph.Find(node).GetNeighbours(-1, 2));
GraphTestHelper.AssertNodesAreOrderedByLevel(graph.Find(node).GetNeighbours(-1, 2));
}
public void TerminatingPrecedentsReturnsPrecedentsOfTheNodeOnTheZeroLevel(int node, int[] expectedTerminatingPrecedents)
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
GraphTestHelper.AssertCollectionsConsistsOfNodes(expectedTerminatingPrecedents,
graph.Find(node).TerminatingPrecedents);
GraphTestHelper.AssertNodesAreOrderedByLevel(graph.Find(node).TerminatingPrecedents);
}
public void LevelCalculatesCorrectly(int node, int expectedLevel)
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
var countLevels = graph.CountLevels; // force graph to rebuild. fix this later
var target = graph.Find(node);
Assert.AreEqual(expectedLevel, target.Level,
"Level of node {0} expected to be {1}, but is {2}", target.Value, expectedLevel, target.Level);
}
public void CountLevelsReturnsNumberOfLevelsInGraph2()
{
var graph = GraphTestHelper.CreateEmptyGraph(TargetGraph);
graph.AddSequences(new[]
{
new[] { 1, 2, 6 },
new[] { 2, 3, 4, 5 },
new[] { 9, 8, 7, 6 },
});
Assert.AreEqual(6, graph.CountLevels);
}
public void CanSortReturnsWhetherGraphCanBeSorted2()
{
// {41, 51, 61, 100},
// {42, 52, 62, 100},
var graph = GraphTestHelper.CreateSimpleGraph(TargetGraph);
Assert.True(graph.CanSort());
graph.AddSequences(new[]
{
new[] { 100, 41 },
});
Assert.False(graph.CanSort());
}
public void ConstructorWithInitialSequenceArgumentInitializesGraph()
{
var target = GraphTestHelper.CreateEmptyGraph(TargetGraph);
target.AddSequence(new[] { 1, 2, 3, 4, 5 });
Assert.AreEqual(5, target.CountNodes);
GraphTestHelper.AssertConsistsOfSequences(target, new[]
{
new[] { 1, 2 },
new[] { 2, 3 },
new[] { 3, 4 },
new[] { 4, 5 },
new[] { 1, 2, 3, 4, 5 },
});
}
public void GenerateGraphGeneratesSquareGraphStructure()
{
var target = GraphGenerator.GenerateGraph(3, 2, 2);
GraphTestHelper.AssertConsistsOfSequences(target, new[]
{
new[] { 0, 2 },
new[] { 0, 3 },
new[] { 1, 2 },
new[] { 1, 3 },
new[] { 2, 4 },
new[] { 2, 5 },
new[] { 3, 4 },
new[] { 3, 5 },
});
}
public void GenerateGraphGeneratesVerticalGraphStructure()
{
var target = GraphGenerator.GenerateGraph(10, 1, 1);
GraphTestHelper.AssertConsistsOfSequences(target, new[]
{
new[] { 0, 1 },
new[] { 1, 2 },
new[] { 2, 3 },
new[] { 3, 4 },
new[] { 4, 5 },
new[] { 5, 6 },
new[] { 6, 7 },
new[] { 7, 8 },
new[] { 8, 9 },
});
}
public void GenerateGraphGeneratesTriangleGraphStructure1()
{
var target = GraphGenerator.GenerateGraph(3, 3, 1);
GraphTestHelper.AssertConsistsOfSequences(target, new[]
{
new[] { 0, 1 },
new[] { 0, 2 },
new[] { 0, 3 },
new[] { 1, 4 },
new[] { 1, 5 },
new[] { 1, 6 },
new[] { 2, 7 },
new[] { 2, 8 },
new[] { 2, 9 },
new[] { 3, 10 },
new[] { 3, 11 },
new[] { 3, 12 },
});
}
public void AddAddsSequence()
{
var target = GraphTestHelper.CreateEmptyGraph(TargetGraph);
target.AddSequence(new [] { 0, 1 });
target.AddSequence(new [] { 1, 2 });
target.AddSequence(new [] { 2, 3 });
target.AddSequence(new [] { 3, 4 });
target.AddSequence(new [] { 4, 5 });
target.AddSequence(new [] { 5, 6 });
target.AddSequence(new [] { 6, 7 });
target.AddSequence(new [] { 7, 8 });
target.AddSequence(new [] { 8, 9 });
Assert.AreEqual(10, target.CountNodes);
GraphTestHelper.AssertConsistsOfSequences(target, new[]
{
new[] { 0, 1 },
new[] { 1, 2 },
new[] { 2, 3 },
new[] { 3, 4 },
new[] { 4, 5 },
new[] { 5, 6 },
new[] { 6, 7 },
new[] { 7, 8 },
new[] { 8, 9 },
new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
});
GraphTestHelper.AssertConsistsOfBackSequences(target, new[]
{
new[] { 1, 0 },
new[] { 2, 1 },
new[] { 3, 2 },
new[] { 4, 3 },
new[] { 5, 4 },
new[] { 6, 5 },
new[] { 7, 6 },
new[] { 8, 7 },
new[] { 9, 8 },
new[] { 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 },
});
}
public void InitialLevelCalculatesCorrectly()
{
var graph = GraphTestHelper.CreateEmptyGraph(TargetGraph);
graph.AddSequences(new[]
{
new[] { 2, 4, 3, 9 },
new[] { 1, 3 },
new[] { 4, 5, 7, 8, 3 },
new[] { 4, 6, 8 },
new[] { 2, 9 },
});
var countLevels = graph.CountLevels;
for (var level = 0; level < countLevels; level++)
{
var nodesOnLevel = graph.GetNodes(level).Count();
Assert.IsTrue(nodesOnLevel > 0);
}
}
public void AddRangeAddsSequences()
{
var graph = GraphTestHelper.CreateEmptyGraph(TargetGraph);
graph.AddSequences(new []
{
new[] { 41, 51, 61, 100 },
new[] { 42, 52, 62, 100 },
});
Assert.AreEqual(7, graph.CountNodes);
GraphTestHelper.AssertConsistsOfSequences(graph, new[]
{
new[] { 41, 51 },
new[] { 51, 61 },
new[] { 61, 100 },
new[] { 42, 52 },
new[] { 52, 62 },
new[] { 62, 100 },
new[] { 41, 51, 61, 100 },
new[] { 42, 52, 62, 100 },
});
}
public void AddAddsExistingSequence()
{
// {41, 51, 61, 100},
// {42, 52, 62, 100},
var graph = GraphTestHelper.CreateSimpleGraph(TargetGraph);
Assert.AreEqual(7, graph.CountNodes);
graph.AddSequence(new[] { 51, 61 });
graph.AddSequence(new[] { 42, 52 });
Assert.AreEqual(7, graph.CountNodes);
GraphTestHelper.AssertConsistsOfSequences(graph, new[]
{
new[] { 41, 51 },
new[] { 51, 61 },
new[] { 61, 100 },
new[] { 42, 52 },
new[] { 52, 62 },
new[] { 62, 100 },
new[] { 41, 51, 61, 100 },
new[] { 42, 52, 62, 100 },
});
}
public void SingleSequenceCannotBeAdded()
{
var graph = GraphTestHelper.CreateEmptyGraph(TargetGraph);
graph.AddSequence(new[] { 1 });
}
public void FindReturnsCorrectValue(int node)
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
Assert.AreEqual(node, graph.Find(node).Value);
}
public void CanSortReturnsWhetherGraphCanBeSorted1()
{
var graph = GraphTestHelper.CreateSimpleGraph(TargetGraph);
Assert.True(graph.CanSort());
}
public void CanSortReturnsWhetherGraphWithTheSequenceCanBeSorted1()
{
var graph = GraphTestHelper.CreateSimpleGraph(TargetGraph);
Assert.True(graph.CanSort(new[] { 43, 52, 63, 100 }));
}
public void CanSortReturnsWhetherGraphWithTheSequenceCanBeSorted2()
{
var graph = GraphTestHelper.CreateSimpleGraph(TargetGraph);
Assert.False(graph.CanSort(new[] { 100, 41 }));
}
public void CountLevelsReturnsNumberOfLevelsInGraph1()
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
Assert.AreEqual(6, graph.CountLevels);
}
public void CountReturnsCountOfGraph()
{
var graph = GraphTestHelper.CreateExampleGraph(TargetGraph);
Assert.AreEqual(20, graph.CountNodes);
}
