private static InputStream getBlobInputStream(int blobSize) {
    byte[] randomBytes = TestUtils.getRandomBytes(blobSize);
    return new ByteArrayInputStream(randomBytes);
  }
Utility method to get blob input stream.
@param blobSize size of blob to consider.
@return the blob input stream.
ambry-cloud/src/test/java/com/github/ambry/cloud/azure/AzureIntegrationTest.java