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import unittest, sequtils
import nre except toSeq
import optional_nonstrict
import times, strutils
block: # find
block: # find text
check("3213a".find(re"[a-z]").match == "a")
check(toSeq(findIter("1 2 3 4 5 6 7 8 ", re" ")).map(
proc (a: RegexMatch): string = a.match
) == @[" ", " ", " ", " ", " ", " ", " ", " "])
block: # find bounds
check(toSeq(findIter("1 2 3 4 5 ", re" ")).map(
proc (a: RegexMatch): Slice[int] = a.matchBounds
) == @[1..1, 3..3, 5..5, 7..7, 9..9])
block: # overlapping find
check("222".findAll(re"22") == @["22"])
check("2222".findAll(re"22") == @["22", "22"])
block: # len 0 find
check("".findAll(re"\ ") == newSeq[string]())
check("".findAll(re"") == @[""])
check("abc".findAll(re"") == @["", "", "", ""])
check("word word".findAll(re"\b") == @["", "", "", ""])
check("word\r\lword".findAll(re"(*ANYCRLF)(?m)$") == @["", ""])
check("слово слово".findAll(re"(*U)\b") == @["", "", "", ""])
block: # bail early
## we expect nothing to be found and we should be bailing out early which means that
## the timing difference between searching in small and large data should be well
## within a tolerance margin
const small = 10
const large = 1000
var smallData = repeat("url.sequence = \"http://whatever.com/jwhrejrhrjrhrjhrrjhrjrhrjrh\" ", small)
var largeData = repeat("url.sequence = \"http://whatever.com/jwhrejrhrjrhrjhrrjhrjrhrjrh\" ", large)
var expression = re"^url.* = "(.*?)""
check(smallData.findAll(expression) == newSeq[string]())
check(largeData.findAll(expression) == newSeq[string]())
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