Livt.Net

tests/tftp/TftpRequestMemoryTest.lvt

namespace Livt.Net.Tests

using Livt.Net
using Livt.IO

/**
 * Snapshot storage choices preserve source independence, bounds and failed-load invalidation.
 */
@Test
component TftpRequestMemoryTest
{
	// One serialized source and independent snapshots for each supported memory style.
	array: TftpRequest<ArrayPacketData<516>, MemoryStyle.Auto, ArrayRam<byte, 516>>
	input: ArrayPacketData<516>
	automatic: TftpRequest<ArrayPacketData<516>, MemoryStyle.Auto>
	block: TftpRequest<ArrayPacketData<516>, MemoryStyle.Block>
	distributed: TftpRequest<ArrayPacketData<516>, MemoryStyle.Distributed>

	/**
	 * Constructs all snapshots in the same context; tests serialize source access.
	 */
	new()
	{
		input = new ArrayPacketData<516>()
		array = new TftpRequest<ArrayPacketData<516>, MemoryStyle.Auto, ArrayRam<byte, 516>>(input)
		automatic = new TftpRequest<ArrayPacketData<516>, MemoryStyle.Auto>(input)
		block = new TftpRequest<ArrayPacketData<516>, MemoryStyle.Block>(input)
		distributed = new TftpRequest<ArrayPacketData<516>, MemoryStyle.Distributed>(input)
	}

	/**
	 * Auto storage retains a maximum DATA packet after source reuse and hides invalid bytes.
	 */
	@Test
	fn PreservesAutoSnapshotContract()
	{
		if (input.IsReady()) {
			input.TryRelease()
		}

		input.TryClear()

		for (var index = 0; index < 516; index++) {
			assert input.TryWrite(index, (index % 256) as byte) == PacketDataResult.Success
		}

		input.TryWrite(0, 0)
		input.TryWrite(1, 3)
		input.TryPublish()
		assert automatic.Load()
		input.TryRelease()
		input.TryWrite(0, 0xFF)
		assert automatic.GetOpcode() == 3
		assert automatic.GetLength() == 516
		assert automatic.GetByte(515) == 3
		assert automatic.GetByte(-1) == 0
		assert automatic.GetByte(516) == 0
		assert !automatic.Load()
		assert automatic.GetLength() == 0
		assert automatic.GetByte(515) == 0
	}

	/**
	 * Block storage retains a maximum DATA packet after source reuse and hides invalid bytes.
	 */
	@Test
	fn PreservesBlockSnapshotContract()
	{
		if (input.IsReady()) {
			input.TryRelease()
		}

		input.TryClear()

		for (var index = 0; index < 516; index++) {
			assert input.TryWrite(index, (index % 256) as byte) == PacketDataResult.Success
		}

		input.TryWrite(0, 0)
		input.TryWrite(1, 3)
		input.TryPublish()
		assert block.Load()
		input.TryRelease()
		input.TryWrite(0, 0xFF)
		assert block.GetOpcode() == 3
		assert block.GetLength() == 516
		assert block.GetByte(515) == 3
		assert block.GetByte(-1) == 0
		assert block.GetByte(516) == 0
		assert !block.Load()
		assert block.GetLength() == 0
		assert block.GetByte(515) == 0
	}

	/**
	 * Distributed storage retains a maximum DATA packet after source reuse and hides invalid bytes.
	 */
	@Test
	fn PreservesDistributedSnapshotContract()
	{
		if (input.IsReady()) {
			input.TryRelease()
		}

		input.TryClear()

		for (var index = 0; index < 516; index++) {
			assert input.TryWrite(index, (index % 256) as byte) == PacketDataResult.Success
		}

		input.TryWrite(0, 0)
		input.TryWrite(1, 3)
		input.TryPublish()
		assert distributed.Load()
		input.TryRelease()
		input.TryWrite(0, 0xFF)
		assert distributed.GetOpcode() == 3
		assert distributed.GetLength() == 516
		assert distributed.GetByte(515) == 3
		assert distributed.GetByte(-1) == 0
		assert distributed.GetByte(516) == 0
		assert !distributed.Load()
		assert distributed.GetLength() == 0
		assert distributed.GetByte(515) == 0
	}
	/**
	 * Array storage retains a maximum DATA packet after source reuse and hides invalid bytes.
	 */
	@Test
	fn PreservesArraySnapshotContract()
	{
		if (input.IsReady()) {
			input.TryRelease()
		}

		input.TryClear()

		for (var index = 0; index < 516; index++) {
			assert input.TryWrite(index, (index % 256) as byte) == PacketDataResult.Success
		}

		input.TryWrite(0, 0)
		input.TryWrite(1, 3)
		input.TryPublish()
		assert array.Load()
		input.TryRelease()
		input.TryWrite(0, 0xFF)
		assert array.GetOpcode() == 3
		assert array.GetLength() == 516
		assert array.GetByte(515) == 3
		assert array.GetByte(-1) == 0
		assert array.GetByte(516) == 0
		assert !array.Load()
		assert array.GetLength() == 0
		assert array.GetByte(515) == 0
	}
}