74 lines
1.6 KiB
Nim
74 lines
1.6 KiB
Nim
# SPDX-License-Identifier: ISC
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import streams, strutils, unittest
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import bigints, preserves
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suite "native":
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let testVectors = @[
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(-257, "A1FEFF"),
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(-256, "A1FF00"),
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(-255, "A1FF01"),
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(-254, "A1FF02"),
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(-129, "A1FF7F"),
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(-128, "A080"),
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(-127, "A081"),
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(-4, "A0FC"),
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(-3, "9D"),
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(-2, "9E"),
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(-1, "9F"),
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(0, "90"),
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(1, "91"),
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(12, "9C"),
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(13, "A00D"),
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(127, "A07F"),
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(128, "A10080"),
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(255, "A100FF"),
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(256, "A10100"),
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(131072, "A2020000"),
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(32767, "A17FFF"),
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(32768, "A2008000"),
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(65535, "A200FFFF"),
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(65536, "A2010000"),
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]
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for (num, txt) in testVectors:
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test $num:
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let x = num.toPreserve
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var stream = newStringStream()
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stream.write(x)
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block:
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stream.setPosition(0)
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let a = txt
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let b = stream.readAll.toHex
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check(b == a)
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block:
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stream.setPosition(0)
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let y = stream.parsePreserve()
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let a = num
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let b = y.int
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check(b == a)
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suite "big":
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let testVectors = @[
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("87112285931760246646623899502532662132736", "B012010000000000000000000000000000000000"),
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("-87112285931760246646623899502532662132736", "B012FF0000000000000000000000000000000000"),
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]
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for (decimals, hex) in testVectors:
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test decimals:
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let big = initBigInt(decimals)
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let x = big.toPreserve
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var stream = newStringStream()
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stream.write(x)
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block:
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stream.setPosition(0)
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let a = hex
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let b = stream.readAll.toHex
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check(b == a)
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block:
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stream.setPosition(0)
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let y = stream.parsePreserve()
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let a = big
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let b = y.bigint
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check(b == a)
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