public void FromByteArrayTest()
{
Guid centroidID = Guid.NewGuid();
MemoryStream stream = new MemoryStream();
stream.Write(BitConverter.GetBytes(2.53), 0, sizeof(double));
stream.Write(BitConverter.GetBytes(4.56), 0, sizeof(double));
stream.Write(centroidID.ToByteArray(), 0, 16);
byte[] bytes = stream.ToArray();
ClusterPoint expected = new ClusterPoint
{
X = 2.53F,
Y = 4.56F,
CentroidID = centroidID
};
ClusterPoint actual;
actual = ClusterPoint.FromByteArray(bytes);
const double Epsilon = 0.0001;
Assert.IsTrue(Math.Abs(expected.X - actual.X) < Epsilon);
Assert.IsTrue(Math.Abs(expected.Y - actual.Y) < Epsilon);
Assert.AreEqual(expected.CentroidID, actual.CentroidID);
}
public void InitializeStorageTest()
{
KMeansJobData jobData = new KMeansJobData(Guid.NewGuid(), 2, null, 4, 10, DateTime.Now);
KMeansJob target = new KMeansJob(jobData, "server");
target.InitializeStorage();
// Verify that the created containers and blobs actually exist
CloudBlobClient client = AzureHelper.StorageAccount.CreateCloudBlobClient();
CloudBlobContainer c = null;
try
{
c = client.GetContainerReference(jobData.JobID.ToString());
c.FetchAttributes();
}
catch (StorageClientException e)
{
if (e.ErrorCode == StorageErrorCode.ResourceNotFound)
{
Assert.Fail();
}
else
{
throw;
}
}
CloudBlob points = null, centroids = null;
try
{
points = c.GetBlobReference("points");
points.FetchAttributes();
centroids = c.GetBlobReference("centroids");
centroids.FetchAttributes();
}
catch (StorageClientException e)
{
if (e.ErrorCode == StorageErrorCode.ResourceNotFound)
{
Assert.Fail();
}
else
{
throw;
}
}
// Verify that unpacking a ClusterPoint actually yields a point with coordinates [-50, 50) and a null centroidID
byte[] pointBytes;
using (BlobStream pointsStream = points.OpenRead())
{
pointBytes = new byte[ClusterPoint.Size];
pointsStream.Read(pointBytes, 0, ClusterPoint.Size);
}
ClusterPoint p = ClusterPoint.FromByteArray(pointBytes);
Assert.IsTrue(p.X >= -50 && p.X < 50);
Assert.IsTrue(p.Y >= -50 && p.Y < 50);
Assert.AreEqual(p.CentroidID, Guid.Empty);
// Verify that the blobs are the correct length
Assert.AreEqual(points.Properties.Length, ClusterPoint.Size * jobData.N);
Assert.AreEqual(centroids.Properties.Length, Centroid.Size * jobData.K);
}
