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Fixing bug where breadth-first search was not returning desired result when root and destination are the same

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This commit is contained in:
Chris Cameron 2017-12-12 16:54:53 -05:00
parent 6db084853e
commit 025400bf7e
2 changed files with 16 additions and 0 deletions
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12
ICD.Common.Utils.Tests/RecursionUtilsTest.cs
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@ -56,5 +56,17 @@ namespace ICD.Common.Utils.Tests
Assert.IsNull(noPath);
}
/// <summary>
/// Test to ensure that when start and end node are the same, breadth first search returns that single node.
/// </summary>
[Test]
public void BreadthFirstSearchPathSingleNodeTest()
{
int[] path = RecursionUtils.BreadthFirstSearchPath(1, 1, Graph).ToArray();
Assert.AreEqual(1, path.Length);
Assert.AreEqual(1, path[0]);
}
}
}

4
ICD.Common.Utils/RecursionUtils.cs
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@ -69,6 +69,10 @@ namespace ICD.Common.Utils
if (comparer == null)
throw new ArgumentNullException("comparer");
// Edge case - root and destination are the same
if (comparer.Equals(root, destination))
return new[] {root};
Queue<T> queue = new Queue<T>();
queue.Enqueue(root);