81 lines
2.1 KiB
Nim
81 lines
2.1 KiB
Nim
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import pkg/asynctest
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import pkg/stew/byteutils
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import pkg/codex/chunker
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import pkg/chronicles
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import pkg/chronos
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import ./helpers
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asyncchecksuite "Chunking":
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test "should return proper size chunks":
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var offset = 0
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let contents = [1.byte, 2, 3, 4, 5, 6, 7, 8, 9, 0]
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proc reader(data: ChunkBuffer, len: int): Future[int]
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{.gcsafe, async, raises: [Defect].} =
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let read = min(contents.len - offset, len)
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if read == 0:
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return 0
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copyMem(data, unsafeAddr contents[offset], read)
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offset += read
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return read
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let chunker = Chunker.new(
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reader = reader,
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chunkSize = 2'nb)
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check:
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(await chunker.getBytes()) == [1.byte, 2]
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(await chunker.getBytes()) == [3.byte, 4]
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(await chunker.getBytes()) == [5.byte, 6]
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(await chunker.getBytes()) == [7.byte, 8]
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(await chunker.getBytes()) == [9.byte, 0]
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(await chunker.getBytes()) == []
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chunker.offset == offset
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test "should chunk LPStream":
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let stream = BufferStream.new()
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let chunker = LPStreamChunker.new(
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stream = stream,
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chunkSize = 2'nb)
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proc writer() {.async.} =
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for d in [@[1.byte, 2, 3, 4], @[5.byte, 6, 7, 8], @[9.byte, 0]]:
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await stream.pushData(d)
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await stream.pushEof()
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await stream.close()
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let writerFut = writer()
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check:
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(await chunker.getBytes()) == [1.byte, 2]
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(await chunker.getBytes()) == [3.byte, 4]
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(await chunker.getBytes()) == [5.byte, 6]
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(await chunker.getBytes()) == [7.byte, 8]
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(await chunker.getBytes()) == [9.byte, 0]
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(await chunker.getBytes()) == []
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chunker.offset == 10
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await writerFut
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test "should chunk file":
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let
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path = currentSourcePath()
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file = open(path)
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fileChunker = FileChunker.new(file = file, chunkSize = 256'nb, pad = false)
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var data: seq[byte]
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while true:
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let buff = await fileChunker.getBytes()
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if buff.len <= 0:
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break
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check buff.len <= fileChunker.chunkSize.int
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data.add(buff)
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check:
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string.fromBytes(data) == readFile(path)
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fileChunker.offset == data.len
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