v/vlib/regex/regex_test.v

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import regex
import rand
import strings
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/******************************************************************************
*
* Test section
*
******************************************************************************/
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struct TestItem {
src string
q string
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s int
e int
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}
const(
match_test_suite = [
// minus in CC
TestItem{"d.def",r"abc.\.[\w\-]{,100}",-1,0},
TestItem{"abc12345.asd",r"abc.\.[\w\-]{,100}",-1,4},
TestItem{"abca.exe",r"abc.\.[\w\-]{,100}",0,8},
TestItem{"abc2.exe-test_12",r"abc.\.[\w\-]{,100}",0,16},
TestItem{"abcdefGHK",r"[a-f]+\A+",0,9},
TestItem{"ab-cd-efGHK",r"[a-f\-g]+\A+",0,11},
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// base OR
TestItem{"a",r"a|b",0,1},
TestItem{"a",r"b|a",0,1},
TestItem{"b",r"a|b",0,1},
TestItem{"b",r"b|a",0,1},
TestItem{"c",r"b|a",-1,0},
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// test base
TestItem{"[ciao]",r"(.)ciao(.)",0,6},
TestItem{"[ciao] da me",r"(.)ciao(.)",0,6},
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// positive
TestItem{"this is a good.",r"this",0,4},
TestItem{"this is a good.",r"good",10,14},
TestItem{"this is a good.",r"go+d",10,14},
TestItem{"this is a good.",r"g[oae]+d",10,14},
TestItem{"this is a goed.",r"g[oae]+d",10,14},
TestItem{"this is a good.",r"g[oae]*d",10,14},
TestItem{"this is a goaezd.",r"g[ea-cm-z]*d",10,16},
TestItem{"this is a good.",r"this (\w+) a",0,9},
TestItem{"this is a good.",r"this( \w+){2} g",0,11},
TestItem{"this is a good.",r"( ?\w+){,1}",0,4},
TestItem{"this is a good.",r"( ?\w+)+",0,14},
TestItem{"this is a good.",r"this( \w+)+",0,14},
TestItem{"this is a good sample.",r"( ?\w+){,2}",0,7},
TestItem{"this is a good sample.",r"( ?\w+){,3}",0,9},
TestItem{"this is a good sample.",r"( ?\w+){,4}",0,14},
TestItem{"this is a good sample.",r"( ?\w+){,5}",0,21},
TestItem{"this is a good sample.",r"( ?\w+){2,3}",0,9},
TestItem{"this is a good sample.",r"(\s?\w+){2,3}",0,9},
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TestItem{"this these those.",r"(th[ei]se?\s|\.)+",0,11},
TestItem{"this these those ",r"(th[eio]se? ?)+",0,17},
TestItem{"this these those ",r"(th[eio]se? )+",0,17},
TestItem{"this,these,those. over",r"(th[eio]se?[,. ])+",0,17},
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TestItem{"soday,this,these,those. over",r".+(th[eio]se?[,. ])+",0,23},
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TestItem{"cpapaz",r"(c(pa)+z)",0,6},
TestItem{"this is a cpapaz over",r"(c(pa)+z)",10,16},
TestItem{"this is a cpapapez over",r"(c(p[ae])+z)",10,18},
TestItem{"test@post.pip.com",r"[a-z0-9_]+@([a-z0-9_]+\.?)+",0,17},
TestItem{"test1@post.pip.com, pera",r"[\w]+@([\w]+\.)+\w+",0,18},
TestItem{"pippo@pera.com ",r"[a-z0-9_]+@([a-z0-9_]+\.?)+",0,14},
TestItem{"adce aabe",r"(a(ab)+)|(a(dc)+)e",0,4},
TestItem{"zadce aabe",r"(a(ab)+)|(a(dc)+)e",1,5},
TestItem{"abbz accz addz.",r"c|(d)|e|(ab+)",0,3},
TestItem{"this those these ciao",r"((t[hieo]+se?)\s*)+",0,17},
TestItem{"this ciao",r"((t[hieo]+se?)\s*)+",0,5},
TestItem{"this cpapaz adce aabe",r"(c(pa)+z)(\s[\a]+){2}",5,21},
TestItem{"1234this cpapaz adce aabe",r"(c(pa)+z)(\s[\a]+){2}$",9,25},
TestItem{"this cpapaz adce aabe third",r"(c(pa)+z)(\s[\a]+){2}",5,21},
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TestItem{"123cpapaz ole. pippo",r"(c(pa)+z)(\s+\a+[\.,]?)+",3,20},
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TestItem{"this is a good sample.",r".*i(\w)+",0,4},
TestItem{"soday,this,these,those. over",r".*,(th[eio]se?[,. ])+",0,23},
TestItem{"soday,this,these,thesa.thesi over",r".*,(th[ei]se?[,. ])+(thes[ai][,. ])+",0,29},
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TestItem{"cpapaz ole. pippo,",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,18},
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TestItem{"cpapaz ole. pippo",r"(c(pa)+z)(\s+\a+[\.,]?)+",0,17},
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TestItem{"cpapaz ole. pippo, 852",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,18},
TestItem{"123cpapaz ole. pippo",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,20},
TestItem{"...cpapaz ole. pippo",r".*(c(pa)+z)(\s+\a+[\.,]?)+",0,20},
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TestItem{"cpapaz ole. pippo,",r".*c.+ole.*pi",0,14},
TestItem{"cpapaz ole. pipipo,",r".*c.+ole.*p([ip])+o",0,18},
TestItem{"cpapaz ole. pipipo",r"^.*c.+ol?e.*p([ip])+o$",0,18},
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TestItem{"abbb",r"ab{2,3}?",0,3},
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TestItem{" pippo pera",r"\s(.*)pe(.*)",0,11},
TestItem{" abb",r"\s(.*)",0,4},
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TestItem{"/home/us_er/pippo/info-01.txt", r"(/?[-\w_]+)*\.txt$",0,29}
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// negative
TestItem{"zthis ciao",r"((t[hieo]+se?)\s*)+",-1,0},
TestItem{"this is a good.",r"thes",-1,2},
TestItem{"test1post.pip.com, pera",r"[\w]+@([\w]+\.)+\w+",-1,9},
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TestItem{"this cpapaz adce",r"(c(pa)+z)(\s[\a]+){2}",-1,0},
TestItem{"this cpapaz adce aabe third",r"(c(pa)+z)(\s[\a]+){2}$",-1,0},
TestItem{"1234this cpapaz adce aabe ter",r"(c(pa)+z)(\s[\a]+){2}$",-1,0},
TestItem{"cpapaz ole. pipipo,",r"^.*c.+ol?e.*p([ip])+o$",-1,0},
TestItem{"/home/us_er/pippo/info-01.jpeg", r"(/?[-\w_]+)*\.txt$",-1,26}
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// check unicode
TestItem{"this is a test",r".*a [-Ⅵ ]+",0,34},
TestItem{"123 test",r"[-\s]+",3,23},
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// new edge cases
TestItem{"12345678", r"[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]",-1,8},
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TestItem{"12345678", r"[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]",0,8},
TestItem{"123456789", r"^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$",0,9}
TestItem{"12345678", r"^\d{8}$",0,8},
TestItem{"12345678", r"^\d{7}$",-1,0},
TestItem{"12345678", r"^\d{9}$",-1,8},
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TestItem{"eth", r"(oth)|(eth)",0,3},
TestItem{"et", r"(oth)|(eth)",-1,2},
TestItem{"et", r".*(oth)|(eth)",-1,2},
TestItem{"peoth", r".*(ith)|(eth)",-1,5},
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TestItem{"poth", r"(eth)|(oth)",1,4},
TestItem{"poth", r"(oth)|(eth)",1,4},
TestItem{"poth", r".(oth)|(eth)$",0,4},
TestItem{"poth", r"^.(oth)|(eth)$",0,4},
TestItem{"poth", r"^\w+$",0,4},
// test dot_char
TestItem{"8-11 l: qllllqllklhlvtl", r"^(\d+)-(\d+) ([a-z]): (.*)$",0,23},
TestItem{"accccb deer", r"^a(.*)b d(.+)r",0,11},
TestItem{"accccb deer", r"^a(.*)b d(.+)",0,11},
TestItem{"accccb deer", r"^(.*)$",0,11},
TestItem{"accccb deer", r"^a(.*)b d(.+)p",-1,11},
TestItem{"##.#....#.##.####...#.##", r".{18}[.#]",0,19},
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TestItem{"#.#......##.#..#..##........##....###...##...######.......#.....#..#......#...#........###.#..#.", r'.*#[.#]{4}##[.#]{4}##[.#]{4}###',0,49},
// test bcksls chars
TestItem{"[ an s. s! ]( wi4ki:something )", r"\[.*\]\( *(\w*:*\w+) *\)",0,31},
TestItem{"[ an s. s! ](wiki:something)", r"\[.*\]\( *(\w*:*\w+) *\)",0,28},
TestItem{"p_p", r"\w+",0,3},
TestItem{"p_é", r"\w+",0,2},
// Crazywulf tests (?:^|[()])(\d+)(*)(\d+)(?:$|[()])
TestItem{"1*1", r"(\d+)([*])(\d+)",0,3},
TestItem{"+1*1", r"^(\d+)([*])(\d+)",-1,0},
TestItem{"*1*1", r"(?:^|[*])(\d+)([*])(\d+)",0,4},
TestItem{"*1*1", r"(?:^|[*()])(\d+)([*])(\d+)",0,4},
TestItem{")1*1", r"(?:^|[*()])(\d+)([*])(\d+)",0,4},
TestItem{"(1*1", r"(?:^|[*()])(\d+)([*])(\d+)",0,4},
TestItem{"*1*1(", r"(?:^|[*()])(\d+)([*])(\d+)(?:$|[*()])",0,5},
TestItem{" 1*1(", r"(?:^|[*()])(\d+)([*])(\d+)(?:$|[*()])",-1,0},
TestItem{"1*1 ", r"(?:^|[*()])(\d+)([*])(\d+)(?:$|[*()])",-1,0},
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// particular groups
TestItem{"ababababac", r"ab(.*)(ac)",0,10},
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// backslash on finish string
TestItem{"a", r"\S+",0,1},
TestItem{"aaaa", r"\S+",0,4},
TestItem{"aaaa ", r"\S+",0,4},
// multiple dot char
TestItem{"aba", r"a*(b*)*a",0,3},
TestItem{"/*x*/", r"/\**(.*)\**/",0,5},
TestItem{"/*x*/", r"/*(.*)*/",0,5},
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]
)
struct TestItemRe {
src string
q string
rep string
r string
}
const (
match_test_suite_replace = [
// replace tests
TestItemRe{
"oggi pibao è andato a casa di pbababao ed ha trovato pibabababao",
r"(pi?(ba)+o)",
"CIAO",
"oggi CIAO è andato a casa di CIAO ed ha trovato CIAO"
},
TestItemRe{
"Today is a good day and tomorrow will be for sure.",
r"[Tt]o\w+",
"CIAO",
"CIAO is a good day and CIAO will be for sure."
},
TestItemRe{
"Today is a good day and tomorrow will be for sure.",
r"(a\w) ",
r"[\0] ",
"Tod[ay] is a good d[ay] and tomorrow will be for sure."
},
TestItemRe{
"Today is a good day and tomorrow will be for sure.",
r"(a\w) ",
r"[\0_\0] ",
"Tod[ay_ay] is a good d[ay_ay] and tomorrow will be for sure."
},
TestItemRe{
"Today is a good day and tomorrow will be for sure.",
r"(a\w) ",
r"[\0\1] ",
"Tod[ay] is a good d[ay] and tomorrow will be for sure."
},
]
match_test_suite_replace_simple = [
// replace tests
TestItemRe{
"oggi pibao è andato a casa di pbababao ed ha trovato pibabababao",
r"(pi?(ba)+o)",
"CIAO",
"oggi CIAO è andato a casa di CIAO ed ha trovato CIAO"
},
TestItemRe{
"Today is a good day and tomorrow will be for sure.",
r"[Tt]o\w+",
"CIAO",
"CIAO is a good day and CIAO will be for sure."
},
]
)
struct TestItemCGroup {
src string
q string
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s int
e int
cg []int // [number of items (3*# item), id_group_0, start_0, end_0, id_group_1, start1, start2,... ]
cgn map[string]int
}
const (
cgroups_test_suite = [
TestItemCGroup{
"http://www.ciao.mondo/hello/pippo12_/pera.html",
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r"(?P<format>https?)|(?:ftps?)://(?P<token>[\w_]+[\.|/])+",0,42,
[7, 0, 0, 4, 1, 7, 11, 1, 11, 16, 1, 16, 22, 1, 22, 28, 1, 28, 37, 1, 37, 42],
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{'format':int(0),'token':1}
},
TestItemCGroup{
"http://www.ciao.mondo/hello/pippo12_/pera.html",
r"(?P<format>https?)|(?P<format>ftps?)://(?P<token>[\w_]+.)+",0,46,
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[8, 0, 0, 4, 1, 7, 11, 1, 11, 16, 1, 16, 22, 1, 22, 28, 1, 28, 37, 1, 37, 42, 1, 42, 46]
//[8, 0, 0, 4, 1, 7, 10, 1, 11, 15, 1, 16, 21, 1, 22, 27, 1, 28, 36, 1, 37, 41, 1, 42, 46],
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{'format':int(0),'token':1}
},
TestItemCGroup{
"http://www.ciao.mondo/hello/pippo12_/pera.html",
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r"(?P<format>https?)|(?P<format>ftps?)://([\w_]+\.)+",0,16,
[3, 0, 0, 4, 1, 7, 11, 1, 11, 16],
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{'format':int(0)}
},
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TestItemCGroup{
"acc +13 pippo",
r"(\w+)\s(.)([0-9]+) \w+",0,13,
[0, 3, 4, 5, 5, 7],
map[string]int{}
},
TestItemCGroup{
"acc +13",
r"(\w+)\s(.)([0-9]+)",0,7,
[0, 3, 4, 5, 5, 7],
map[string]int{}
},
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TestItemCGroup{
"ababababac",
r"ab(.*)(ac)",0,10,
[2, 8, 8, 10],
map[string]int{}
},
]
)
struct Test_find_all {
src string
q string
res []int // [0,4,5,6...]
res_str []string // ['find0','find1'...]
}
const (
find_all_test_suite = [
Test_find_all{
"abcd 1234 efgh 1234 ghkl1234 ab34546df",
r"\d+",
[5, 9, 15, 19, 24, 28, 31, 36],
['1234', '1234', '1234', '34546']
},
Test_find_all{
"abcd 1234 efgh 1234 ghkl1234 ab34546df",
r"\a+",
[0, 4, 10, 14, 20, 24, 29, 31, 36, 38],
['abcd', 'efgh', 'ghkl', 'ab', 'df']
},
Test_find_all{
"oggi pippo è andato a casa di pluto ed ha trovato pippo",
r"p[iplut]+o",
[5, 10, 31, 36, 51, 56],
['pippo', 'pluto', 'pippo']
},
Test_find_all{
"oggi pibao è andato a casa di pbababao ed ha trovato pibabababao",
r"(pi?(ba)+o)",
[5, 10, 31, 39, 54, 65],
['pibao', 'pbababao', 'pibabababao']
},
Test_find_all{
"Today is a good day and tomorrow will be for sure.",
r"[Tt]o\w+",
[0, 5, 24, 32],
['Today', 'tomorrow']
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},
Test_find_all{
"pera\nurl = https://github.com/dario/pig.html\npippo",
r"url *= *https?://[\w./]+",
[5, 44],
['url = https://github.com/dario/pig.html']
},
Test_find_all{
"pera\nurl = https://github.com/dario/pig.html\npippo",
r"url *= *https?://.*"+'\n',
[5, 45],
['url = https://github.com/dario/pig.html\n']
},
Test_find_all{
"#.#......##.#..#..##........##....###...##...######.......#.....#..#......#...#........###.#..#.",
r"#[.#]{4}##[.#]{4}##[.#]{4}###",
[29, 49],
['#....###...##...####']
},
Test_find_all{
"#.#......##.#..#..##........##....###...##...######.......#.....#..#......#...#........###.#..#.",
r".*#[.#]{4}##[.#]{4}##[.#]{4}###",
[0, 49],
['#.#......##.#..#..##........##....###...##...####']
},
Test_find_all{
"1234 Aa dddd Aaf 12334 Aa opopo Aaf",
r"Aa.+Aaf",
[5, 16, 23, 35],
['Aa dddd Aaf', 'Aa opopo Aaf']
},
Test_find_all{
"@for something @endfor @for something else @endfor altro testo @for body @endfor uno due @for senza dire più @endfor pippo",
r"@for.+@endfor",
[0, 22, 23, 50, 63, 80, 89, 117],
['@for something @endfor', '@for something else @endfor', '@for body @endfor', '@for senza dire più @endfor']
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},
Test_find_all{
"+++pippo+++\n elvo +++ pippo2 +++ +++ oggi+++",
r"\+{3}.*\+{3}",
[0, 11, 18, 32, 33, 44],
['+++pippo+++', '+++ pippo2 +++', '+++ oggi+++']
}
]
)
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const (
debug = true // true for debug println
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)
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fn test_regex(){
// check capturing groups
for c,to in cgroups_test_suite {
// debug print
if debug {
println("$c [${to.src}] [q${to.q}] (${to.s}, ${to.e})")
}
mut re := regex.regex_opt(to.q) or {
eprintln('err: $err')
assert false
continue
}
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if to.cgn.len > 0 {
re.group_csave_flag = true
//re.group_csave = [-1].repeat(3*20+1)
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if debug { println("continuous save")}
} else {
if debug { println("NO continuous save")}
}
start, end := re.match_string(to.src)
mut tmp_str := ""
if start >= 0 && end > start{
tmp_str = to.src[start..end]
}
if start != to.s || end != to.e {
println("#$c [$to.src] q[$to.q] res[$tmp_str] base:[${to.s},${to.e}] $start, $end")
eprintln("ERROR!")
assert false
continue
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}
// check cgroups
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if to.cgn.len > 0 {
if re.group_csave.len == 0 || re.group_csave[0] != to.cg[0] {
eprintln("Capturing group len error! found: ${re.group_csave[0]} true ground: ${to.cg[0]}")
assert false
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continue
}
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// check captured groups
mut ln := re.group_csave[0]*3
for ln > 0 {
if re.group_csave[ln] != to.cg[ln] {
eprintln("Capturing group failed on $ln item!")
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assert false
}
ln--
}
// check named captured groups
for k in to.cgn.keys() {
if to.cgn[k] != (re.group_map[k]-1) { // we have -1 because the map not found is 0, in groups we start from 0 and we store using +1
eprintln("Named capturing group error! [$k]")
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assert false
continue
}
}
} else {
// check normal captured groups
if re.groups.len != to.cg.len {
assert false
}
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for ln:=0; ln < re.groups.len; ln++ {
if re.groups[ln] != to.cg[ln] {
eprintln("Capture group doesn't match:")
eprintln("true ground: ${to.cg}")
eprintln("elaborated : ${re.groups}")
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assert false
}
}
}
}
// check find_all
for c,to in find_all_test_suite {
// debug print
if debug { println("#$c [$to.src] q[$to.q] ($to.res, $to.res_str)") }
mut re := regex.regex_opt(to.q) or {
eprintln('err: $err')
assert false
continue
}
re.reset()
res := re.find_all(to.src)
if res != to.res {
eprintln('err: find_all !!')
if debug { println("#$c exp: $to.res calculated: $res") }
assert false
}
res_str := re.find_all_str(to.src)
if res_str != to.res_str {
eprintln('err: find_all_str !!')
if debug { println("#$c exp: $to.res_str calculated: $res_str") }
assert false
}
}
// check replace
for c,to in match_test_suite_replace{
// debug print
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if debug { println("#$c [$to.src] q[$to.q] $to.r") }
mut re := regex.regex_opt(to.q) or {
eprintln('err: $err')
assert false
continue
}
res := re.replace(to.src,to.rep)
if res != to.r {
eprintln("ERROR: replace.")
assert false
continue
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}
}
// check replace simple
for c,to in match_test_suite_replace_simple{
// debug print
if debug { println("#$c [$to.src] q[$to.q] $to.r") }
mut re := regex.regex_opt(to.q) or {
eprintln('err: $err')
assert false
continue
}
res := re.replace_simple(to.src,to.rep)
if res != to.r {
eprintln("ERROR: replace.")
assert false
continue
}
}
// check match and find
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for c,to in match_test_suite {
// debug print
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if debug { println("#$c [$to.src] q[$to.q] $to.s $to.e") }
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// test the find
if to.s > 0 {
mut re := regex.regex_opt(to.q) or {
eprintln('err: $err')
assert false
continue
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}
// q_str := re.get_query()
// eprintln("Query: $q_str")
start,end := re.find(to.src)
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if start != to.s || end != to.e {
err_str := re.get_parse_error_string(start)
eprintln("ERROR : $err_str start: ${start} end: ${end}")
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assert false
} else {
//tmp_str := text[start..end]
//println("found in [$start, $end] => [$tmp_str]")
assert true
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}
continue
}
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// test the match
mut re := regex.new()
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//re.debug = true
re.compile_opt(to.q) or {
eprintln('err: $err')
assert false
continue
}
//println("#$c [$to.src] q[$to.q]")
start, end := re.match_string(to.src)
mut tmp_str := ""
if start >= 0 && end > start{
tmp_str = to.src[start..end]
}
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if start != to.s || end != to.e {
eprintln("#$c [$to.src] q[$to.q] res[$tmp_str] $start, $end")
eprintln("ERROR!")
assert false
continue
}
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// test the match predicate
if to.s >= 0 {
assert re.matches_string(to.src)
} else {
assert !re.matches_string(to.src)
}
// rerun to test consistency
tmp_str1 := to.src.clone()
start1, end1 := re.match_string(tmp_str1)
if start1 != start || end1 != end {
eprintln("two run ERROR!!")
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assert false
continue
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}
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}
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if debug { println("DONE!") }
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}
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// test regex_base function
fn test_regex_func(){
query := r"\d\dabcd"
test_str := "78abcd"
mut re, re_err, err_pos := regex.regex_base(query)
if re_err == regex.compile_ok {
start, end := re.match_string(test_str)
assert (start == 0) && (end == 6)
} else {
eprintln("Error in query string in pos ${err_pos}")
eprintln("Error: ${re.get_parse_error_string(re_err)}")
assert false
}
}
fn my_repl_1(re regex.RE, in_txt string, start int, end int) string {
s0 := re.get_group_by_id(in_txt,0)
println("[$start, $end] => ${s0}")
return "a" + s0.to_upper()
}
fn test_regex_func_replace1(){
txt := "abbabbbabbbbaabba"
query := r"a(b+)"
mut re := regex.regex_opt(query) or { panic(err) }
result := re.replace_by_fn(txt, my_repl_1)
assert result == "aBBaBBBaBBBBaaBBa"
}
fn my_repl(re regex.RE, in_txt string, start int, end int) string {
s0 := re.get_group_by_id(in_txt,0)[0..1] + "X"
s1 := re.get_group_by_id(in_txt,1)[0..1] + "X"
s2 := re.get_group_by_id(in_txt,2)[0..1] + "X"
return "${s0}${s1}${s2}"
}
// test regex replace function
fn test_regex_func_replace(){
filler := "E il primo dei tre regni dell'Oltretomba cristiano visitato da Dante nel corso del viaggio, con la guida di Virgilio."
txt := r'"content": "They dont necessarily flag "you will be buying these shares on margin!"", "channel_id"'
query := r'"(content":\s+")(.*)(, "channel_id")'
mut re := regex.regex_opt(query) or { panic(err) }
mut txt1 := ""
mut txt2 := ""
for _ in 0..3 {
rnd := int(10+rand.u32() % 20)
txt1 += txt + filler[0..rnd] + "\n"
txt2 += "cXTX,X" + filler[0..rnd] + "\n"
}
result := re.replace_by_fn(txt1, my_repl)
if debug {
eprintln(result)
eprintln(txt2)
}
assert result == txt2
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}
fn rest_regex_replace_n(){
s := "dario 1234 pepep 23454 pera"
query := r"\d+"
mut re := regex.regex_opt(query) or { panic(err) }
assert re.replace_n(s, "[repl]", 0) == "dario 1234 pepep 23454 pera"
assert re.replace_n(s, "[repl]", -1) == "dario 1234 pepep [repl] pera"
assert re.replace_n(s, "[repl]", 1) == "dario [repl] pepep 23454 pera"
assert re.replace_n(s, "[repl]", 2) == "dario [repl] pepep [repl] pera"
assert re.replace_n(s, "[repl]", -2) == "dario [repl] pepep [repl] pera"
assert re.replace_n(s, "[repl]", 3) == "dario [repl] pepep [repl] pera"
assert re.replace_n(s, "[repl]", -3) == "dario [repl] pepep [repl] pera"
//mut res := re.replace_n(s, "[repl]", -1)
//println("source: ${s}")
//println("res : ${res}")
}
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// test quantifier wrong sequences
const(
test_quantifier_sequences_list = [
r'+{3}.*+{3}',
r'+{3}.*?{3}',
r'+{3}.**{3}',
r'+{3}.*\+{3}*',
r'+{3}.*\+{3}+',
r'+{3}.*\+{3}??',
r'+{3}.*\+{3}{4}'
]
)
fn test_quantifier_sequences(){
for pattern in test_quantifier_sequences_list {
re, re_err, err_pos := regex.regex_base(pattern)
if re_err != regex.err_syntax_error {
eprintln("pattern: $pattern => $re_err")
}
assert re_err == regex.err_syntax_error
}
}
// test group index in find
struct Test_find_groups {
src string
q string
s int // start index
e int // end index
res []int // groups indexes
}
const (
find_groups_test_suite = [
Test_find_groups{
"aabbbccccdd",
r"(b+)(c+)",
2,
9,
[2, 5, 5, 9],
},
Test_find_groups{
"aabbbccccdd",
r"(a+).*(c+)",
0,
9,
[0, 2, 5, 9],
},
Test_find_groups{
"aabbbccccdd",
r"((b+).*)(d+)",
2,
11,
[2, 9, 2, 5, 9, 11],
},
]
)
fn test_groups_in_find(){
for test_obj in find_groups_test_suite {
src_text := test_obj.src
query := test_obj.q
mut re := regex.regex_opt(query) or { panic(err) }
start, end := re.find(src_text)
// Debug print do not remove!!
/*
println("---------")
println("src_text:[${src_text}]")
println("query :[${query}]")
println("[${start}, ${end}]")
println(re.groups)
mut gi := 0
for gi < re.groups.len {
if re.groups[gi] >= 0 {
println('${gi / 2} :[${src_text[re.groups[gi]..re.groups[gi + 1]]}]')
}
gi += 2
}
*/
// check
assert start == test_obj.s
assert end == test_obj.e
assert re.groups == test_obj.res
}
}
const(
err_query_list = [
r'([a]|[b])*'
]
)
fn test_errors(){
mut count := 0
for query in err_query_list {
_, err, _ := regex.regex_base(query)
if err != regex.compile_ok {
count++
}
}
assert count == err_query_list.len
}
fn test_long_query() {
test_len := 32768
mut buf := strings.new_builder(test_len * 3)
base_string := rand.string(test_len)
for c in base_string {
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buf.write_u8(`(`)
buf.write_u8(c)
buf.write_u8(`)`)
}
mut query := buf.str()
//println(base_string)
//println(buf.str())
// test 1
mut re := regex.regex_opt(query) or { panic(err) }
mut start, mut end := re.match_string(base_string)
//println("$start, $end")
assert start >= 0 && end == base_string.len
// test 2
buf.clear()
for c in base_string {
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buf.write_u8(`(`)
buf.write_u8(c)
}
for _ in 0..base_string.len {
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buf.write_u8(`)`)
}
query = buf.str()
re = regex.regex_opt(query) or { panic(err) }
start, end = re.match_string(base_string)
//println("$start, $end")
assert start >= 0 && end == base_string.len
}
struct Test_negation_group {
src string
res bool
}
const(
negation_groups = [
Test_negation_group{'automobile',false},
Test_negation_group{'botomobile',true},
Test_negation_group{'auto_caravan',false},
Test_negation_group{'moto_mobile',true},
Test_negation_group{'pippole',true},
Test_negation_group{'boring test',false},
]
)
fn test_negation_groups() {
mut query := r"(?!auto)\w+le"
mut re := regex.regex_opt(query) or { panic(err) }
for test in negation_groups {
start, end := re.match_string(test.src)
assert (start >= 0) == test.res
}
}