public virtual void TestBlocksCounter()
{
DatanodeDescriptor dd = BlockManagerTestUtil.GetLocalDatanodeDescriptor(true);
NUnit.Framework.Assert.AreEqual(0, dd.NumBlocks());
BlockInfoContiguous blk = new BlockInfoContiguous(new Block(1L), (short)1);
BlockInfoContiguous blk1 = new BlockInfoContiguous(new Block(2L), (short)2);
DatanodeStorageInfo[] storages = dd.GetStorageInfos();
NUnit.Framework.Assert.IsTrue(storages.Length > 0);
// add first block
NUnit.Framework.Assert.IsTrue(storages[0].AddBlock(blk) == DatanodeStorageInfo.AddBlockResult
.Added);
NUnit.Framework.Assert.AreEqual(1, dd.NumBlocks());
// remove a non-existent block
NUnit.Framework.Assert.IsFalse(dd.RemoveBlock(blk1));
NUnit.Framework.Assert.AreEqual(1, dd.NumBlocks());
// add an existent block
NUnit.Framework.Assert.IsFalse(storages[0].AddBlock(blk) == DatanodeStorageInfo.AddBlockResult
.Added);
NUnit.Framework.Assert.AreEqual(1, dd.NumBlocks());
// add second block
NUnit.Framework.Assert.IsTrue(storages[0].AddBlock(blk1) == DatanodeStorageInfo.AddBlockResult
.Added);
NUnit.Framework.Assert.AreEqual(2, dd.NumBlocks());
// remove first block
NUnit.Framework.Assert.IsTrue(dd.RemoveBlock(blk));
NUnit.Framework.Assert.AreEqual(1, dd.NumBlocks());
// remove second block
NUnit.Framework.Assert.IsTrue(dd.RemoveBlock(blk1));
NUnit.Framework.Assert.AreEqual(0, dd.NumBlocks());
}