32 lines
986 B
Nim
32 lines
986 B
Nim
# constantine
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# Copyright (c) 2018 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import unittest,
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../constantine/[io, bigints]
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type T = uint64
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suite "IO":
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test "Parsing raw integers":
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block: # Sanity check
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let x = 0'u64
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let x_bytes = cast[array[8, byte]](x)
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let big = parseRawUint(x_bytes, 64, cpuEndian)
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check:
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T(big[0]) == 0
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T(big[1]) == 0
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block: # 2^63 is properly represented on 2 limbs
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let x = 1'u64 shl 63
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let x_bytes = cast[array[8, byte]](x)
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let big = parseRawUint(x_bytes, 64, cpuEndian)
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check:
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T(big[0]) == 0
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T(big[1]) == 1
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