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Make unused code into actual test, replace echo with doassert (#13952)

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Juan Carlos 2020-04-11 17:16:26 -03:00 • committed by GitHub
commit 7238b968f3
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2 changed files with 84 additions and 33 deletions
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33
lib/std/varints.nim
View file

@ -119,36 +119,3 @@ proc encodeZigzag*(x: int64): uint64 {.inline.} =
proc decodeZigzag*(x: uint64): int64 {.inline.} = proc decodeZigzag*(x: uint64): int64 {.inline.} =
let casted = cast[int64](x) let casted = cast[int64](x)
result = (`shr`(casted, 1)) xor (-(casted and 1)) result = (`shr`(casted, 1)) xor (-(casted and 1))
when isMainModule:
#import random
var dest: array[50, byte]
var got: uint64
for test in [0xFFFF_FFFF_FFFFF_FFFFu64, 77u64, 0u64, 10_000_000u64, uint64(high(int64)),
uint64(high(int32)),uint64(low(int32)),uint64(low(int64))]:
let wrLen = writeVu64(dest, test)
let rdLen = readVu64(dest, got)
assert wrLen == rdLen
echo(if got == test: "YES" else: "NO")
echo "number is ", got
if encodeZigzag(decodeZigzag(test)) != test:
echo "Failure for ", test, " ", encodeZigzag(decodeZigzag(test)), " ", decodeZigzag(test)
for test in 0u64..300u64:
let wrLen = writeVu64(dest, test)
let rdLen = readVu64(dest, got)
assert wrLen == rdLen
if got != test:
echo "BUG! expected: ", test, " got: ", got, " z0: ", dest[0]
# check this also works for floats:
for test in [0.0, 0.1, 2.0, +Inf, Nan, NegInf]:
let t = cast[uint64](test)
let wrLenB = writeVu64(dest, t)
let rdLenB = readVu64(dest, got)
assert wrLenB == rdLenB
echo rdLenB
echo(if cast[float64](got) == test: "YES" else: "NO")

84
tests/stdlib/tvarints.nim Normal file
View file

@ -0,0 +1,84 @@
discard """
cmd: "nim c -r --styleCheck:hint --panics:on $options $file"
matrix: "-d:danger; -d:release"
targets: "c cpp"
nimout: ""
action: "run"
exitcode: 0
timeout: 60.0
"""
import std/varints
block:
var dest: array[50, byte]
var got: uint64
for test in [0xFFFF_FFFF_FFFFF_FFFFu64, 77u64, 0u64, 10_000_000u64, uint64(high(int64)),
uint64(high(int32)), uint64(high(int32)), uint64(high(int64))]:
let wrLen = writeVu64(dest, test)
let rdLen = readVu64(dest, got)
doAssert wrLen == rdLen
doAssert got == test
for test in 0u64..300u64:
let wrLen = writeVu64(dest, test)
let rdLen = readVu64(dest, got)
doAssert wrLen == rdLen
doAssert got == test
# check this also works for floats:
for test in [0.0, 0.1, 2.0, +Inf, NegInf]:
let t = cast[uint64](test)
let wrLenB = writeVu64(dest, t)
let rdLenB = readVu64(dest, got)
doAssert wrLenB == rdLenB
doAssert cast[float64](got) == test
block:
var hugeIntArray: array[50, byte]
var readedInt: uint64
doAssert writeVu64(hugeIntArray, 0.uint64) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == 0.uint64
doAssert writeVu64(hugeIntArray, uint64.high) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == uint64.high
doAssert writeVu64(hugeIntArray, uint64(int64.high)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == uint64(int64.high)
doAssert writeVu64(hugeIntArray, uint64(int32.high)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == uint64(int32.high)
doAssert writeVu64(hugeIntArray, uint64(int16.high)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == uint64(int16.high)
doAssert writeVu64(hugeIntArray, uint64(int8.high)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == uint64(int8.high)
doAssert writeVu64(hugeIntArray, cast[uint64](0.0)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](0.0)
doAssert writeVu64(hugeIntArray, cast[uint64](-0.0)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](-0.0)
doAssert writeVu64(hugeIntArray, cast[uint64](0.1)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](0.1)
doAssert writeVu64(hugeIntArray, cast[uint64](0.9555555555555555555555501)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](0.9555555555555555555555501)
doAssert writeVu64(hugeIntArray, cast[uint64](+Inf)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](+Inf)
doAssert writeVu64(hugeIntArray, cast[uint64](NegInf)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](NegInf)
doAssert writeVu64(hugeIntArray, cast[uint64](Nan)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](Nan)
doAssert writeVu64(hugeIntArray, cast[uint64](3.1415926535897932384626433)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](3.1415926535897932384626433)
doAssert writeVu64(hugeIntArray, cast[uint64](2.71828182845904523536028747)) == readVu64(hugeIntArray, readedInt)
doAssert readedInt == cast[uint64](2.71828182845904523536028747)
block:
doAssert encodeZigzag(decodeZigzag(0.uint64)) == 0.uint64
doAssert encodeZigzag(decodeZigzag(uint64(uint32.high))) == uint64(uint32.high)
doAssert encodeZigzag(decodeZigzag(uint64(int32.high))) == uint64(int32.high)
doAssert encodeZigzag(decodeZigzag(uint64(int16.high))) == uint64(int16.high)
doAssert encodeZigzag(decodeZigzag(uint64(int8.high))) == uint64(int8.high)
doAssert encodeZigzag(decodeZigzag(cast[uint64](0.0))) == cast[uint64](0.0)
doAssert encodeZigzag(decodeZigzag(cast[uint64](0.1))) == cast[uint64](0.1)
doAssert encodeZigzag(decodeZigzag(cast[uint64](0.9555555555555555555555501))) == cast[uint64](0.9555555555555555555555501)
doAssert encodeZigzag(decodeZigzag(cast[uint64](+Inf))) == cast[uint64](+Inf)
doAssert encodeZigzag(decodeZigzag(cast[uint64](3.1415926535897932384626433))) == cast[uint64](3.1415926535897932384626433)
doAssert encodeZigzag(decodeZigzag(cast[uint64](2.71828182845904523536028747))) == cast[uint64](2.71828182845904523536028747)