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// Copyright 2020 The Prometheus Authors |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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package labels |
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import ( |
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"fmt" |
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"math/rand" |
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"strings" |
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"testing" |
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"time" |
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"unicode/utf8" |
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"github.com/grafana/regexp" |
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"github.com/grafana/regexp/syntax" |
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"github.com/stretchr/testify/require" |
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) |
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var ( |
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asciiRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_") |
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regexes = []string{ |
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"", |
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"foo", |
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"^foo", |
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"(foo|bar)", |
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"foo.*", |
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".*foo", |
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"^.*foo$", |
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"^.+foo$", |
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".?", |
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".*", |
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".+", |
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"foo.+", |
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".+foo", |
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"foo\n.+", |
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"foo\n.*", |
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".*foo.*", |
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".+foo.+", |
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"(?s:.*)", |
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"(?s:.+)", |
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"(?s:^.*foo$)", |
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"(?i:foo)", |
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"(?i:(foo|bar))", |
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"(?i:(foo1|foo2|bar))", |
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"^(?i:foo|oo)|(bar)$", |
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"(?i:(foo1|foo2|aaa|bbb|ccc|ddd|eee|fff|ggg|hhh|iii|lll|mmm|nnn|ooo|ppp|qqq|rrr|sss|ttt|uuu|vvv|www|xxx|yyy|zzz))", |
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"((.*)(bar|b|buzz)(.+)|foo)$", |
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"^$", |
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"(prometheus|api_prom)_api_v1_.+", |
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"10\\.0\\.(1|2)\\.+", |
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"10\\.0\\.(1|2).+", |
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"((fo(bar))|.+foo)", |
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// A long case sensitive alternation. |
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"zQPbMkNO|NNSPdvMi|iWuuSoAl|qbvKMimS|IecrXtPa|seTckYqt|NxnyHkgB|fIDlOgKb|UhlWIygH|OtNoJxHG|cUTkFVIV|mTgFIHjr|jQkoIDtE|PPMKxRXl|AwMfwVkQ|CQyMrTQJ|BzrqxVSi|nTpcWuhF|PertdywG|ZZDgCtXN|WWdDPyyE|uVtNQsKk|BdeCHvPZ|wshRnFlH|aOUIitIp|RxZeCdXT|CFZMslCj|AVBZRDxl|IzIGCnhw|ythYuWiz|oztXVXhl|VbLkwqQx|qvaUgyVC|VawUjPWC|ecloYJuj|boCLTdSU|uPrKeAZx|hrMWLWBq|JOnUNHRM|rYnujkPq|dDEdZhIj|DRrfvugG|yEGfDxVV|YMYdJWuP|PHUQZNWM|AmKNrLis|zTxndVfn|FPsHoJnc|EIulZTua|KlAPhdzg|ScHJJCLt|NtTfMzME|eMCwuFdo|SEpJVJbR|cdhXZeCx|sAVtBwRh|kVFEVcMI|jzJrxraA|tGLHTell|NNWoeSaw|DcOKSetX|UXZAJyka|THpMphDP|rizheevl|kDCBRidd|pCZZRqyu|pSygkitl|SwZGkAaW|wILOrfNX|QkwVOerj|kHOMxPDr|EwOVycJv|AJvtzQFS|yEOjKYYB|LizIINLL|JBRSsfcG|YPiUqqNl|IsdEbvee|MjEpGcBm|OxXZVgEQ|xClXGuxa|UzRCGFEb|buJbvfvA|IPZQxRet|oFYShsMc|oBHffuHO|bzzKrcBR|KAjzrGCl|IPUsAVls|OGMUMbIU|gyDccHuR|bjlalnDd|ZLWjeMna|fdsuIlxQ|dVXtiomV|XxedTjNg|XWMHlNoA|nnyqArQX|opfkWGhb|wYtnhdYb", |
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// An extremely long case sensitive alternation. This is a special |
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// case because the values share common prefixes rather than being |
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// entirely random. This is common in the real world. For example, the |
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// values of a label like kubernetes pod will often include the |
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// deployment name as a prefix. |
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|fyeff99j0196|fyeff99j0197|fyeff99j0209|fyeff99j0210|fyeff99j0211|fyeff99j0214|fyeff99j0215|fyeff99j0218|fyeff99j0219|fyeff99j0220|fyeff99j0221|fyeff99j0260|fyeff99j0279|fyeff99j0284|fyeff99j0291|fyeff99j0295|fyeff99j0296|fyeff99j0297|fyeff99j0298|fyeff99j0324|fyeff99j0339|fyeff99j0355|fyeff99j0370|fyeff99j0376|fyeff99j0379|fyeff99j0381|fyeff99j0392|fyeff99j0401|fyeff99j0404|fyeff99j0405|fyeff99j0407|fyeff99j0410|fyeff99j0411|fyeff99j0413|fyeff99j0414|fyeff99j0415|fyeff99j0418|fyeff99j0421|fyeff99j0423|fyeff99j0436|fyeff99j0673|fyeff99j0896|fyeff99j0950|fyeff99j0962|fyeff99j0985|fyeff99j1010|fyeff99j1012|fyeff99j1028|fyeff99j1090|fyeff99j1370|fayfm01j0148|fayfm01j0149|fayfm01j0155|fayfm02j0148|fayfm02j0149|fayfm02j0155|faefj00j0594|faefj00j0595|faefj00j0596|faefj00j0597|faefj01j0707|faefj02j0707|faefj03j0707|faefj90j1023|faefj91j1023|faefj92j1023|faefj94j1056|faefj95j1023|faefj95j1056|faefj96j1056|faefj98j1038|faefj99j1078|fdeff99j9001|fdeff99j9002|gyefj99j0005", |
|
|
// A long case insensitive alternation. |
|
|
"(?i:(zQPbMkNO|NNSPdvMi|iWuuSoAl|qbvKMimS|IecrXtPa|seTckYqt|NxnyHkgB|fIDlOgKb|UhlWIygH|OtNoJxHG|cUTkFVIV|mTgFIHjr|jQkoIDtE|PPMKxRXl|AwMfwVkQ|CQyMrTQJ|BzrqxVSi|nTpcWuhF|PertdywG|ZZDgCtXN|WWdDPyyE|uVtNQsKk|BdeCHvPZ|wshRnFlH|aOUIitIp|RxZeCdXT|CFZMslCj|AVBZRDxl|IzIGCnhw|ythYuWiz|oztXVXhl|VbLkwqQx|qvaUgyVC|VawUjPWC|ecloYJuj|boCLTdSU|uPrKeAZx|hrMWLWBq|JOnUNHRM|rYnujkPq|dDEdZhIj|DRrfvugG|yEGfDxVV|YMYdJWuP|PHUQZNWM|AmKNrLis|zTxndVfn|FPsHoJnc|EIulZTua|KlAPhdzg|ScHJJCLt|NtTfMzME|eMCwuFdo|SEpJVJbR|cdhXZeCx|sAVtBwRh|kVFEVcMI|jzJrxraA|tGLHTell|NNWoeSaw|DcOKSetX|UXZAJyka|THpMphDP|rizheevl|kDCBRidd|pCZZRqyu|pSygkitl|SwZGkAaW|wILOrfNX|QkwVOerj|kHOMxPDr|EwOVycJv|AJvtzQFS|yEOjKYYB|LizIINLL|JBRSsfcG|YPiUqqNl|IsdEbvee|MjEpGcBm|OxXZVgEQ|xClXGuxa|UzRCGFEb|buJbvfvA|IPZQxRet|oFYShsMc|oBHffuHO|bzzKrcBR|KAjzrGCl|IPUsAVls|OGMUMbIU|gyDccHuR|bjlalnDd|ZLWjeMna|fdsuIlxQ|dVXtiomV|XxedTjNg|XWMHlNoA|nnyqArQX|opfkWGhb|wYtnhdYb))", |
|
|
"(?i:(AAAAAAAAAAAAAAAAAAAAAAAA|BBBBBBBBBBBBBBBBBBBBBBBB|cccccccccccccccccccccccC|ſſſſſſſſſſſſſſſſſſſſſſſſS|SSSSSSSSSSSSSSSSSSSSSSSSſ))", |
|
|
// A short case insensitive alternation where each entry ends with ".*". |
|
|
"(?i:(zQPbMkNO.*|NNSPdvMi.*|iWuuSoAl.*))", |
|
|
// A long case insensitive alternation where each entry ends with ".*". |
|
|
"(?i:(zQPbMkNO.*|NNSPdvMi.*|iWuuSoAl.*|qbvKMimS.*|IecrXtPa.*|seTckYqt.*|NxnyHkgB.*|fIDlOgKb.*|UhlWIygH.*|OtNoJxHG.*|cUTkFVIV.*|mTgFIHjr.*|jQkoIDtE.*|PPMKxRXl.*|AwMfwVkQ.*|CQyMrTQJ.*|BzrqxVSi.*|nTpcWuhF.*|PertdywG.*|ZZDgCtXN.*|WWdDPyyE.*|uVtNQsKk.*|BdeCHvPZ.*|wshRnFlH.*|aOUIitIp.*|RxZeCdXT.*|CFZMslCj.*|AVBZRDxl.*|IzIGCnhw.*|ythYuWiz.*|oztXVXhl.*|VbLkwqQx.*|qvaUgyVC.*|VawUjPWC.*|ecloYJuj.*|boCLTdSU.*|uPrKeAZx.*|hrMWLWBq.*|JOnUNHRM.*|rYnujkPq.*|dDEdZhIj.*|DRrfvugG.*|yEGfDxVV.*|YMYdJWuP.*|PHUQZNWM.*|AmKNrLis.*|zTxndVfn.*|FPsHoJnc.*|EIulZTua.*|KlAPhdzg.*|ScHJJCLt.*|NtTfMzME.*|eMCwuFdo.*|SEpJVJbR.*|cdhXZeCx.*|sAVtBwRh.*|kVFEVcMI.*|jzJrxraA.*|tGLHTell.*|NNWoeSaw.*|DcOKSetX.*|UXZAJyka.*|THpMphDP.*|rizheevl.*|kDCBRidd.*|pCZZRqyu.*|pSygkitl.*|SwZGkAaW.*|wILOrfNX.*|QkwVOerj.*|kHOMxPDr.*|EwOVycJv.*|AJvtzQFS.*|yEOjKYYB.*|LizIINLL.*|JBRSsfcG.*|YPiUqqNl.*|IsdEbvee.*|MjEpGcBm.*|OxXZVgEQ.*|xClXGuxa.*|UzRCGFEb.*|buJbvfvA.*|IPZQxRet.*|oFYShsMc.*|oBHffuHO.*|bzzKrcBR.*|KAjzrGCl.*|IPUsAVls.*|OGMUMbIU.*|gyDccHuR.*|bjlalnDd.*|ZLWjeMna.*|fdsuIlxQ.*|dVXtiomV.*|XxedTjNg.*|XWMHlNoA.*|nnyqArQX.*|opfkWGhb.*|wYtnhdYb.*))", |
|
|
// A long case insensitive alternation where each entry starts with ".*". |
|
|
"(?i:(.*zQPbMkNO|.*NNSPdvMi|.*iWuuSoAl|.*qbvKMimS|.*IecrXtPa|.*seTckYqt|.*NxnyHkgB|.*fIDlOgKb|.*UhlWIygH|.*OtNoJxHG|.*cUTkFVIV|.*mTgFIHjr|.*jQkoIDtE|.*PPMKxRXl|.*AwMfwVkQ|.*CQyMrTQJ|.*BzrqxVSi|.*nTpcWuhF|.*PertdywG|.*ZZDgCtXN|.*WWdDPyyE|.*uVtNQsKk|.*BdeCHvPZ|.*wshRnFlH|.*aOUIitIp|.*RxZeCdXT|.*CFZMslCj|.*AVBZRDxl|.*IzIGCnhw|.*ythYuWiz|.*oztXVXhl|.*VbLkwqQx|.*qvaUgyVC|.*VawUjPWC|.*ecloYJuj|.*boCLTdSU|.*uPrKeAZx|.*hrMWLWBq|.*JOnUNHRM|.*rYnujkPq|.*dDEdZhIj|.*DRrfvugG|.*yEGfDxVV|.*YMYdJWuP|.*PHUQZNWM|.*AmKNrLis|.*zTxndVfn|.*FPsHoJnc|.*EIulZTua|.*KlAPhdzg|.*ScHJJCLt|.*NtTfMzME|.*eMCwuFdo|.*SEpJVJbR|.*cdhXZeCx|.*sAVtBwRh|.*kVFEVcMI|.*jzJrxraA|.*tGLHTell|.*NNWoeSaw|.*DcOKSetX|.*UXZAJyka|.*THpMphDP|.*rizheevl|.*kDCBRidd|.*pCZZRqyu|.*pSygkitl|.*SwZGkAaW|.*wILOrfNX|.*QkwVOerj|.*kHOMxPDr|.*EwOVycJv|.*AJvtzQFS|.*yEOjKYYB|.*LizIINLL|.*JBRSsfcG|.*YPiUqqNl|.*IsdEbvee|.*MjEpGcBm|.*OxXZVgEQ|.*xClXGuxa|.*UzRCGFEb|.*buJbvfvA|.*IPZQxRet|.*oFYShsMc|.*oBHffuHO|.*bzzKrcBR|.*KAjzrGCl|.*IPUsAVls|.*OGMUMbIU|.*gyDccHuR|.*bjlalnDd|.*ZLWjeMna|.*fdsuIlxQ|.*dVXtiomV|.*XxedTjNg|.*XWMHlNoA|.*nnyqArQX|.*opfkWGhb|.*wYtnhdYb))", |
|
|
// Quest ".?". |
|
|
"fo.?", |
|
|
"foo.?", |
|
|
"f.?o", |
|
|
".*foo.?", |
|
|
".?foo.+", |
|
|
"foo.?|bar", |
|
|
"ſſs", |
|
|
// Concat of literals and wildcards. |
|
|
".*-.*-.*-.*-.*", |
|
|
"(.+)-(.+)-(.+)-(.+)-(.+)", |
|
|
"((.*))(?i:f)((.*))o((.*))o((.*))", |
|
|
"((.*))f((.*))(?i:o)((.*))o((.*))", |
|
|
} |
|
|
values = []string{ |
|
|
"foo", " foo bar", "bar", "buzz\nbar", "bar foo", "bfoo", "\n", "\nfoo", "foo\n", "hello foo world", "hello foo\n world", "", |
|
|
"FOO", "Foo", "fOo", "foO", "OO", "Oo", "\nfoo\n", strings.Repeat("f", 20), "prometheus", "prometheus_api_v1", "prometheus_api_v1_foo", |
|
|
"10.0.1.20", "10.0.2.10", "10.0.3.30", "10.0.4.40", |
|
|
"foofoo0", "foofoo", "😀foo0", "ſſs", "ſſS", "AAAAAAAAAAAAAAAAAAAAAAAA", "BBBBBBBBBBBBBBBBBBBBBBBB", "cccccccccccccccccccccccC", "ſſſſſſſſſſſſſſſſſſſſſſſſS", "SSSSSSSSSSSSSSSSSSSSSSSSſ", |
|
|
|
|
|
// Values matching / not matching the test regexps on long alternations. |
|
|
"zQPbMkNO", "zQPbMkNo", "jyyfj00j0061", "jyyfj00j006", "jyyfj00j00612", "NNSPdvMi", "NNSPdvMiXXX", "NNSPdvMixxx", "nnSPdvMi", "nnSPdvMiXXX", |
|
|
|
|
|
// Invalid utf8 |
|
|
"\xfefoo", |
|
|
"foo\xfe", |
|
|
"\xfd", |
|
|
"\xff\xff", |
|
|
} |
|
|
) |
|
|
|
|
|
func TestFastRegexMatcher_MatchString(t *testing.T) { |
|
|
// Run the test both against a set of predefined values and a set of random ones. |
|
|
testValues := append([]string{}, values...) |
|
|
testValues = append(testValues, generateRandomValues()...) |
|
|
|
|
|
for _, r := range regexes { |
|
|
r := r |
|
|
for _, v := range testValues { |
|
|
v := v |
|
|
t.Run(readable(r)+` on "`+readable(v)+`"`, func(t *testing.T) { |
|
|
t.Parallel() |
|
|
m, err := NewFastRegexMatcher(r) |
|
|
require.NoError(t, err) |
|
|
re := regexp.MustCompile("^(?:" + r + ")$") |
|
|
require.Equal(t, re.MatchString(v), m.MatchString(v)) |
|
|
}) |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
func readable(s string) string { |
|
|
const maxReadableStringLen = 40 |
|
|
if len(s) < maxReadableStringLen { |
|
|
return s |
|
|
} |
|
|
return s[:maxReadableStringLen] + "..." |
|
|
} |
|
|
|
|
|
func TestOptimizeConcatRegex(t *testing.T) { |
|
|
cases := []struct { |
|
|
regex string |
|
|
prefix string |
|
|
suffix string |
|
|
contains []string |
|
|
}{ |
|
|
{regex: "foo(hello|bar)", prefix: "foo", suffix: "", contains: nil}, |
|
|
{regex: "foo(hello|bar)world", prefix: "foo", suffix: "world", contains: nil}, |
|
|
{regex: "foo.*", prefix: "foo", suffix: "", contains: nil}, |
|
|
{regex: "foo.*hello.*bar", prefix: "foo", suffix: "bar", contains: []string{"hello"}}, |
|
|
{regex: ".*foo", prefix: "", suffix: "foo", contains: nil}, |
|
|
{regex: "^.*foo$", prefix: "", suffix: "foo", contains: nil}, |
|
|
{regex: ".*foo.*", prefix: "", suffix: "", contains: []string{"foo"}}, |
|
|
{regex: ".*foo.*bar.*", prefix: "", suffix: "", contains: []string{"foo", "bar"}}, |
|
|
{regex: ".*(foo|bar).*", prefix: "", suffix: "", contains: nil}, |
|
|
{regex: ".*[abc].*", prefix: "", suffix: "", contains: nil}, |
|
|
{regex: ".*((?i)abc).*", prefix: "", suffix: "", contains: nil}, |
|
|
{regex: ".*(?i:abc).*", prefix: "", suffix: "", contains: nil}, |
|
|
{regex: "(?i:abc).*", prefix: "", suffix: "", contains: nil}, |
|
|
{regex: ".*(?i:abc)", prefix: "", suffix: "", contains: nil}, |
|
|
{regex: ".*(?i:abc)def.*", prefix: "", suffix: "", contains: []string{"def"}}, |
|
|
{regex: "(?i).*(?-i:abc)def", prefix: "", suffix: "", contains: []string{"abc"}}, |
|
|
{regex: ".*(?msU:abc).*", prefix: "", suffix: "", contains: []string{"abc"}}, |
|
|
{regex: "[aA]bc.*", prefix: "", suffix: "", contains: []string{"bc"}}, |
|
|
{regex: "^5..$", prefix: "5", suffix: "", contains: nil}, |
|
|
{regex: "^release.*", prefix: "release", suffix: "", contains: nil}, |
|
|
{regex: "^env-[0-9]+laio[1]?[^0-9].*", prefix: "env-", suffix: "", contains: []string{"laio"}}, |
|
|
} |
|
|
|
|
|
for _, c := range cases { |
|
|
parsed, err := syntax.Parse(c.regex, syntax.Perl) |
|
|
require.NoError(t, err) |
|
|
|
|
|
prefix, suffix, contains := optimizeConcatRegex(parsed) |
|
|
require.Equal(t, c.prefix, prefix) |
|
|
require.Equal(t, c.suffix, suffix) |
|
|
require.Equal(t, c.contains, contains) |
|
|
} |
|
|
} |
|
|
|
|
|
// Refer to https://github.com/prometheus/prometheus/issues/2651. |
|
|
func TestFindSetMatches(t *testing.T) { |
|
|
for _, c := range []struct { |
|
|
pattern string |
|
|
expMatches []string |
|
|
expCaseSensitive bool |
|
|
}{ |
|
|
// Single value, coming from a `bar=~"foo"` selector. |
|
|
{"foo", []string{"foo"}, true}, |
|
|
{"^foo", []string{"foo"}, true}, |
|
|
{"^foo$", []string{"foo"}, true}, |
|
|
// Simple sets alternates. |
|
|
{"foo|bar|zz", []string{"foo", "bar", "zz"}, true}, |
|
|
// Simple sets alternate and concat (bar|baz is parsed as "ba[rz]"). |
|
|
{"foo|bar|baz", []string{"foo", "bar", "baz"}, true}, |
|
|
// Simple sets alternate and concat and capture |
|
|
{"foo|bar|baz|(zz)", []string{"foo", "bar", "baz", "zz"}, true}, |
|
|
// Simple sets alternate and concat and alternates with empty matches |
|
|
// parsed as b(ar|(?:)|uzz) where b(?:) means literal b. |
|
|
{"bar|b|buzz", []string{"bar", "b", "buzz"}, true}, |
|
|
// Skip nested capture groups. |
|
|
{"^((bar|b|buzz))$", []string{"bar", "b", "buzz"}, true}, |
|
|
// Skip outer anchors (it's enforced anyway at the root). |
|
|
{"^(bar|b|buzz)$", []string{"bar", "b", "buzz"}, true}, |
|
|
{"^(?:prod|production)$", []string{"prod", "production"}, true}, |
|
|
// Do not optimize regexp with inner anchors. |
|
|
{"(bar|b|b^uz$z)", nil, false}, |
|
|
// Do not optimize regexp with empty string matcher. |
|
|
{"^$|Running", nil, false}, |
|
|
// Simple sets containing escaped characters. |
|
|
{"fo\\.o|bar\\?|\\^baz", []string{"fo.o", "bar?", "^baz"}, true}, |
|
|
// using charclass |
|
|
{"[abc]d", []string{"ad", "bd", "cd"}, true}, |
|
|
// high low charset different => A(B[CD]|EF)|BC[XY] |
|
|
{"ABC|ABD|AEF|BCX|BCY", []string{"ABC", "ABD", "AEF", "BCX", "BCY"}, true}, |
|
|
// triple concat |
|
|
{"api_(v1|prom)_push", []string{"api_v1_push", "api_prom_push"}, true}, |
|
|
// triple concat with multiple alternates |
|
|
{"(api|rpc)_(v1|prom)_push", []string{"api_v1_push", "api_prom_push", "rpc_v1_push", "rpc_prom_push"}, true}, |
|
|
{"(api|rpc)_(v1|prom)_(push|query)", []string{"api_v1_push", "api_v1_query", "api_prom_push", "api_prom_query", "rpc_v1_push", "rpc_v1_query", "rpc_prom_push", "rpc_prom_query"}, true}, |
|
|
// class starting with "-" |
|
|
{"[-1-2][a-c]", []string{"-a", "-b", "-c", "1a", "1b", "1c", "2a", "2b", "2c"}, true}, |
|
|
{"[1^3]", []string{"1", "3", "^"}, true}, |
|
|
// OpPlus with concat |
|
|
{"(.+)/(foo|bar)", nil, false}, |
|
|
// Simple sets containing special characters without escaping. |
|
|
{"fo.o|bar?|^baz", nil, false}, |
|
|
// case sensitive wrapper. |
|
|
{"(?i)foo", []string{"FOO"}, false}, |
|
|
// case sensitive wrapper on alternate. |
|
|
{"(?i)foo|bar|baz", []string{"FOO", "BAR", "BAZ", "BAr", "BAz"}, false}, |
|
|
// mixed case sensitivity. |
|
|
{"(api|rpc)_(v1|prom)_((?i)push|query)", nil, false}, |
|
|
// mixed case sensitivity concatenation only without capture group. |
|
|
{"api_v1_(?i)push", nil, false}, |
|
|
// mixed case sensitivity alternation only without capture group. |
|
|
{"api|(?i)rpc", nil, false}, |
|
|
// case sensitive after unsetting insensitivity. |
|
|
{"rpc|(?i)(?-i)api", []string{"rpc", "api"}, true}, |
|
|
// case sensitive after unsetting insensitivity in all alternation options. |
|
|
{"(?i)((?-i)api|(?-i)rpc)", []string{"api", "rpc"}, true}, |
|
|
// mixed case sensitivity after unsetting insensitivity. |
|
|
{"(?i)rpc|(?-i)api", nil, false}, |
|
|
// too high charset combination |
|
|
{"(api|rpc)_[^0-9]", nil, false}, |
|
|
// too many combinations |
|
|
{"[a-z][a-z]", nil, false}, |
|
|
} { |
|
|
c := c |
|
|
t.Run(c.pattern, func(t *testing.T) { |
|
|
t.Parallel() |
|
|
parsed, err := syntax.Parse(c.pattern, syntax.Perl) |
|
|
require.NoError(t, err) |
|
|
matches, actualCaseSensitive := findSetMatches(parsed) |
|
|
require.Equal(t, c.expMatches, matches) |
|
|
require.Equal(t, c.expCaseSensitive, actualCaseSensitive) |
|
|
|
|
|
if c.expCaseSensitive { |
|
|
// When the regexp is case sensitive, we want to ensure that the |
|
|
// set matches are maintained in the final matcher. |
|
|
r, err := NewFastRegexMatcher(c.pattern) |
|
|
require.NoError(t, err) |
|
|
require.Equal(t, c.expMatches, r.SetMatches()) |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func TestFastRegexMatcher_SetMatches_ShouldReturnACopy(t *testing.T) { |
|
|
m, err := NewFastRegexMatcher("a|b") |
|
|
require.NoError(t, err) |
|
|
require.Equal(t, []string{"a", "b"}, m.SetMatches()) |
|
|
|
|
|
// Manipulate the returned slice. |
|
|
matches := m.SetMatches() |
|
|
matches[0] = "xxx" |
|
|
matches[1] = "yyy" |
|
|
|
|
|
// Ensure that if we call SetMatches() again we get the original one. |
|
|
require.Equal(t, []string{"a", "b"}, m.SetMatches()) |
|
|
} |
|
|
|
|
|
func BenchmarkFastRegexMatcher(b *testing.B) { |
|
|
texts := generateRandomValues() |
|
|
|
|
|
for _, r := range regexes { |
|
|
b.Run(getTestNameFromRegexp(r), func(b *testing.B) { |
|
|
m, err := NewFastRegexMatcher(r) |
|
|
require.NoError(b, err) |
|
|
|
|
|
b.ResetTimer() |
|
|
for i := 0; i < b.N; i++ { |
|
|
for _, text := range texts { |
|
|
_ = m.MatchString(text) |
|
|
} |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func BenchmarkToNormalizedLower(b *testing.B) { |
|
|
benchCase := func(l int, uppercase string, asciiOnly bool, alt int) string { |
|
|
chars := "abcdefghijklmnopqrstuvwxyz" |
|
|
if !asciiOnly { |
|
|
chars = "aаbбcвdгeдfеgёhжiзjиkйlкmлnмoнpоqпrрsсtтuуvфwхxцyчzш" |
|
|
} |
|
|
// Swap the alphabet to make alternatives. |
|
|
chars = chars[alt%len(chars):] + chars[:alt%len(chars)] |
|
|
|
|
|
str := strings.Repeat(chars, l/len(chars)+1)[:l] |
|
|
switch uppercase { |
|
|
case "first": |
|
|
return strings.ToUpper(str[:1]) + str[1:] |
|
|
case "last": |
|
|
return str[:len(str)-1] + strings.ToUpper(str[len(str)-1:]) |
|
|
case "all": |
|
|
return strings.ToUpper(str) |
|
|
case "none": |
|
|
return str |
|
|
default: |
|
|
panic("invalid uppercase") |
|
|
} |
|
|
} |
|
|
|
|
|
for _, l := range []int{10, 100, 1000, 4000} { |
|
|
b.Run(fmt.Sprintf("length=%d", l), func(b *testing.B) { |
|
|
for _, uppercase := range []string{"none", "first", "last", "all"} { |
|
|
b.Run("uppercase="+uppercase, func(b *testing.B) { |
|
|
for _, asciiOnly := range []bool{true, false} { |
|
|
b.Run(fmt.Sprintf("ascii=%t", asciiOnly), func(b *testing.B) { |
|
|
inputs := make([]string, 10) |
|
|
for i := range inputs { |
|
|
inputs[i] = benchCase(l, uppercase, asciiOnly, i) |
|
|
} |
|
|
b.ResetTimer() |
|
|
for n := 0; n < b.N; n++ { |
|
|
toNormalisedLower(inputs[n%len(inputs)]) |
|
|
} |
|
|
}) |
|
|
} |
|
|
}) |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func TestStringMatcherFromRegexp(t *testing.T) { |
|
|
for _, c := range []struct { |
|
|
pattern string |
|
|
exp StringMatcher |
|
|
}{ |
|
|
{".*", anyStringWithoutNewlineMatcher{}}, |
|
|
{".*?", anyStringWithoutNewlineMatcher{}}, |
|
|
{"(?s:.*)", trueMatcher{}}, |
|
|
{"(.*)", anyStringWithoutNewlineMatcher{}}, |
|
|
{"^.*$", anyStringWithoutNewlineMatcher{}}, |
|
|
{".+", &anyNonEmptyStringMatcher{matchNL: false}}, |
|
|
{"(?s:.+)", &anyNonEmptyStringMatcher{matchNL: true}}, |
|
|
{"^.+$", &anyNonEmptyStringMatcher{matchNL: false}}, |
|
|
{"(.+)", &anyNonEmptyStringMatcher{matchNL: false}}, |
|
|
{"", emptyStringMatcher{}}, |
|
|
{"^$", emptyStringMatcher{}}, |
|
|
{"^foo$", &equalStringMatcher{s: "foo", caseSensitive: true}}, |
|
|
{"^(?i:foo)$", &equalStringMatcher{s: "FOO", caseSensitive: false}}, |
|
|
{"^((?i:foo)|(bar))$", orStringMatcher([]StringMatcher{&equalStringMatcher{s: "FOO", caseSensitive: false}, &equalStringMatcher{s: "bar", caseSensitive: true}})}, |
|
|
{`(?i:((foo|bar)))`, orStringMatcher([]StringMatcher{&equalStringMatcher{s: "FOO", caseSensitive: false}, &equalStringMatcher{s: "BAR", caseSensitive: false}})}, |
|
|
{`(?i:((foo1|foo2|bar)))`, orStringMatcher([]StringMatcher{orStringMatcher([]StringMatcher{&equalStringMatcher{s: "FOO1", caseSensitive: false}, &equalStringMatcher{s: "FOO2", caseSensitive: false}}), &equalStringMatcher{s: "BAR", caseSensitive: false}})}, |
|
|
{"^((?i:foo|oo)|(bar))$", orStringMatcher([]StringMatcher{&equalStringMatcher{s: "FOO", caseSensitive: false}, &equalStringMatcher{s: "OO", caseSensitive: false}, &equalStringMatcher{s: "bar", caseSensitive: true}})}, |
|
|
{"(?i:(foo1|foo2|bar))", orStringMatcher([]StringMatcher{orStringMatcher([]StringMatcher{&equalStringMatcher{s: "FOO1", caseSensitive: false}, &equalStringMatcher{s: "FOO2", caseSensitive: false}}), &equalStringMatcher{s: "BAR", caseSensitive: false}})}, |
|
|
{".*foo.*", &containsStringMatcher{substrings: []string{"foo"}, left: anyStringWithoutNewlineMatcher{}, right: anyStringWithoutNewlineMatcher{}}}, |
|
|
{"(.*)foo.*", &containsStringMatcher{substrings: []string{"foo"}, left: anyStringWithoutNewlineMatcher{}, right: anyStringWithoutNewlineMatcher{}}}, |
|
|
{"(.*)foo(.*)", &containsStringMatcher{substrings: []string{"foo"}, left: anyStringWithoutNewlineMatcher{}, right: anyStringWithoutNewlineMatcher{}}}, |
|
|
{"(.+)foo(.*)", &containsStringMatcher{substrings: []string{"foo"}, left: &anyNonEmptyStringMatcher{matchNL: false}, right: anyStringWithoutNewlineMatcher{}}}, |
|
|
{"^.+foo.+", &containsStringMatcher{substrings: []string{"foo"}, left: &anyNonEmptyStringMatcher{matchNL: false}, right: &anyNonEmptyStringMatcher{matchNL: false}}}, |
|
|
{"^(.*)(foo)(.*)$", &containsStringMatcher{substrings: []string{"foo"}, left: anyStringWithoutNewlineMatcher{}, right: anyStringWithoutNewlineMatcher{}}}, |
|
|
{"^(.*)(foo|foobar)(.*)$", &containsStringMatcher{substrings: []string{"foo", "foobar"}, left: anyStringWithoutNewlineMatcher{}, right: anyStringWithoutNewlineMatcher{}}}, |
|
|
{"^(.*)(foo|foobar)(.+)$", &containsStringMatcher{substrings: []string{"foo", "foobar"}, left: anyStringWithoutNewlineMatcher{}, right: &anyNonEmptyStringMatcher{matchNL: false}}}, |
|
|
{"^(.*)(bar|b|buzz)(.+)$", &containsStringMatcher{substrings: []string{"bar", "b", "buzz"}, left: anyStringWithoutNewlineMatcher{}, right: &anyNonEmptyStringMatcher{matchNL: false}}}, |
|
|
{"10\\.0\\.(1|2)\\.+", nil}, |
|
|
{"10\\.0\\.(1|2).+", &containsStringMatcher{substrings: []string{"10.0.1", "10.0.2"}, left: nil, right: &anyNonEmptyStringMatcher{matchNL: false}}}, |
|
|
{"^.+foo", &literalSuffixStringMatcher{left: &anyNonEmptyStringMatcher{}, suffix: "foo", suffixCaseSensitive: true}}, |
|
|
{"foo-.*$", &literalPrefixSensitiveStringMatcher{prefix: "foo-", right: anyStringWithoutNewlineMatcher{}}}, |
|
|
{"(prometheus|api_prom)_api_v1_.+", &containsStringMatcher{substrings: []string{"prometheus_api_v1_", "api_prom_api_v1_"}, left: nil, right: &anyNonEmptyStringMatcher{matchNL: false}}}, |
|
|
{"^((.*)(bar|b|buzz)(.+)|foo)$", orStringMatcher([]StringMatcher{&containsStringMatcher{substrings: []string{"bar", "b", "buzz"}, left: anyStringWithoutNewlineMatcher{}, right: &anyNonEmptyStringMatcher{matchNL: false}}, &equalStringMatcher{s: "foo", caseSensitive: true}})}, |
|
|
{"((fo(bar))|.+foo)", orStringMatcher([]StringMatcher{orStringMatcher([]StringMatcher{&equalStringMatcher{s: "fobar", caseSensitive: true}}), &literalSuffixStringMatcher{suffix: "foo", suffixCaseSensitive: true, left: &anyNonEmptyStringMatcher{matchNL: false}}})}, |
|
|
{"(.+)/(gateway|cortex-gw|cortex-gw-internal)", &containsStringMatcher{substrings: []string{"/gateway", "/cortex-gw", "/cortex-gw-internal"}, left: &anyNonEmptyStringMatcher{matchNL: false}, right: nil}}, |
|
|
// we don't support case insensitive matching for contains. |
|
|
// This is because there's no strings.IndexOfFold function. |
|
|
// We can revisit later if this is really popular by using strings.ToUpper. |
|
|
{"^(.*)((?i)foo|foobar)(.*)$", nil}, |
|
|
{"(api|rpc)_(v1|prom)_((?i)push|query)", nil}, |
|
|
{"[a-z][a-z]", nil}, |
|
|
{"[1^3]", nil}, |
|
|
{".*foo.*bar.*", nil}, |
|
|
{`\d*`, nil}, |
|
|
{".", nil}, |
|
|
{"/|/bar.*", &literalPrefixSensitiveStringMatcher{prefix: "/", right: orStringMatcher{emptyStringMatcher{}, &literalPrefixSensitiveStringMatcher{prefix: "bar", right: anyStringWithoutNewlineMatcher{}}}}}, |
|
|
// This one is not supported because `stringMatcherFromRegexp` is not reentrant for syntax.OpConcat. |
|
|
// It would make the code too complex to handle it. |
|
|
{"(.+)/(foo.*|bar$)", nil}, |
|
|
// Case sensitive alternate with same literal prefix and .* suffix. |
|
|
{"(xyz-016a-ixb-dp.*|xyz-016a-ixb-op.*)", &literalPrefixSensitiveStringMatcher{prefix: "xyz-016a-ixb-", right: orStringMatcher{&literalPrefixSensitiveStringMatcher{prefix: "dp", right: anyStringWithoutNewlineMatcher{}}, &literalPrefixSensitiveStringMatcher{prefix: "op", right: anyStringWithoutNewlineMatcher{}}}}}, |
|
|
// Case insensitive alternate with same literal prefix and .* suffix. |
|
|
{"(?i:(xyz-016a-ixb-dp.*|xyz-016a-ixb-op.*))", &literalPrefixInsensitiveStringMatcher{prefix: "XYZ-016A-IXB-", right: orStringMatcher{&literalPrefixInsensitiveStringMatcher{prefix: "DP", right: anyStringWithoutNewlineMatcher{}}, &literalPrefixInsensitiveStringMatcher{prefix: "OP", right: anyStringWithoutNewlineMatcher{}}}}}, |
|
|
{"(?i)(xyz-016a-ixb-dp.*|xyz-016a-ixb-op.*)", &literalPrefixInsensitiveStringMatcher{prefix: "XYZ-016A-IXB-", right: orStringMatcher{&literalPrefixInsensitiveStringMatcher{prefix: "DP", right: anyStringWithoutNewlineMatcher{}}, &literalPrefixInsensitiveStringMatcher{prefix: "OP", right: anyStringWithoutNewlineMatcher{}}}}}, |
|
|
// Concatenated variable length selectors are not supported. |
|
|
{"foo.*.*", nil}, |
|
|
{"foo.+.+", nil}, |
|
|
{".*.*foo", nil}, |
|
|
{".+.+foo", nil}, |
|
|
{"aaa.?.?", nil}, |
|
|
{"aaa.?.*", nil}, |
|
|
// Regexps with ".?". |
|
|
{"ext.?|xfs", orStringMatcher{&literalPrefixSensitiveStringMatcher{prefix: "ext", right: &zeroOrOneCharacterStringMatcher{matchNL: false}}, &equalStringMatcher{s: "xfs", caseSensitive: true}}}, |
|
|
{"(?s)(ext.?|xfs)", orStringMatcher{&literalPrefixSensitiveStringMatcher{prefix: "ext", right: &zeroOrOneCharacterStringMatcher{matchNL: true}}, &equalStringMatcher{s: "xfs", caseSensitive: true}}}, |
|
|
{"foo.?", &literalPrefixSensitiveStringMatcher{prefix: "foo", right: &zeroOrOneCharacterStringMatcher{matchNL: false}}}, |
|
|
{"f.?o", nil}, |
|
|
} { |
|
|
c := c |
|
|
t.Run(c.pattern, func(t *testing.T) { |
|
|
t.Parallel() |
|
|
parsed, err := syntax.Parse(c.pattern, syntax.Perl) |
|
|
require.NoError(t, err) |
|
|
matches := stringMatcherFromRegexp(parsed) |
|
|
require.Equal(t, c.exp, matches) |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func TestStringMatcherFromRegexp_LiteralPrefix(t *testing.T) { |
|
|
for _, c := range []struct { |
|
|
pattern string |
|
|
expectedLiteralPrefixMatchers int |
|
|
expectedMatches []string |
|
|
expectedNotMatches []string |
|
|
}{ |
|
|
// Case sensitive. |
|
|
{ |
|
|
pattern: "(xyz-016a-ixb-dp.*|xyz-016a-ixb-op.*)", |
|
|
expectedLiteralPrefixMatchers: 3, |
|
|
expectedMatches: []string{"xyz-016a-ixb-dp", "xyz-016a-ixb-dpXXX", "xyz-016a-ixb-op", "xyz-016a-ixb-opXXX"}, |
|
|
expectedNotMatches: []string{"XYZ-016a-ixb-dp", "xyz-016a-ixb-d", "XYZ-016a-ixb-op", "xyz-016a-ixb-o", "xyz", "dp", "xyz-016a-ixb-dp\n"}, |
|
|
}, |
|
|
|
|
|
// Case insensitive. |
|
|
{ |
|
|
pattern: "(?i)(xyz-016a-ixb-dp.*|xyz-016a-ixb-op.*)", |
|
|
expectedLiteralPrefixMatchers: 3, |
|
|
expectedMatches: []string{"xyz-016a-ixb-dp", "XYZ-016a-ixb-dpXXX", "xyz-016a-ixb-op", "XYZ-016a-ixb-opXXX"}, |
|
|
expectedNotMatches: []string{"xyz-016a-ixb-d", "xyz", "dp", "xyz-016a-ixb-dp\n"}, |
|
|
}, |
|
|
|
|
|
// Nested literal prefixes, case sensitive. |
|
|
{ |
|
|
pattern: "(xyz-(aaa-(111.*)|bbb-(222.*)))|(xyz-(aaa-(333.*)|bbb-(444.*)))", |
|
|
expectedLiteralPrefixMatchers: 10, |
|
|
expectedMatches: []string{"xyz-aaa-111", "xyz-aaa-111XXX", "xyz-aaa-333", "xyz-aaa-333XXX", "xyz-bbb-222", "xyz-bbb-222XXX", "xyz-bbb-444", "xyz-bbb-444XXX"}, |
|
|
expectedNotMatches: []string{"XYZ-aaa-111", "xyz-aaa-11", "xyz-aaa-222", "xyz-bbb-111"}, |
|
|
}, |
|
|
|
|
|
// Nested literal prefixes, case insensitive. |
|
|
{ |
|
|
pattern: "(?i)(xyz-(aaa-(111.*)|bbb-(222.*)))|(xyz-(aaa-(333.*)|bbb-(444.*)))", |
|
|
expectedLiteralPrefixMatchers: 10, |
|
|
expectedMatches: []string{"xyz-aaa-111", "XYZ-aaa-111XXX", "xyz-aaa-333", "xyz-AAA-333XXX", "xyz-bbb-222", "xyz-BBB-222XXX", "XYZ-bbb-444", "xyz-bbb-444XXX"}, |
|
|
expectedNotMatches: []string{"xyz-aaa-11", "xyz-aaa-222", "xyz-bbb-111"}, |
|
|
}, |
|
|
|
|
|
// Mixed case sensitivity. |
|
|
{ |
|
|
pattern: "(xyz-((?i)(aaa.*|bbb.*)))", |
|
|
expectedLiteralPrefixMatchers: 3, |
|
|
expectedMatches: []string{"xyz-aaa", "xyz-AAA", "xyz-aaaXXX", "xyz-AAAXXX", "xyz-bbb", "xyz-BBBXXX"}, |
|
|
expectedNotMatches: []string{"XYZ-aaa", "xyz-aa", "yz-aaa", "aaa"}, |
|
|
}, |
|
|
} { |
|
|
t.Run(c.pattern, func(t *testing.T) { |
|
|
parsed, err := syntax.Parse(c.pattern, syntax.Perl) |
|
|
require.NoError(t, err) |
|
|
|
|
|
matcher := stringMatcherFromRegexp(parsed) |
|
|
require.NotNil(t, matcher) |
|
|
|
|
|
re := regexp.MustCompile("^" + c.pattern + "$") |
|
|
|
|
|
// Pre-condition check: ensure it contains literalPrefixSensitiveStringMatcher or literalPrefixInsensitiveStringMatcher. |
|
|
numPrefixMatchers := 0 |
|
|
visitStringMatcher(matcher, func(matcher StringMatcher) { |
|
|
if _, ok := matcher.(*literalPrefixSensitiveStringMatcher); ok { |
|
|
numPrefixMatchers++ |
|
|
} |
|
|
if _, ok := matcher.(*literalPrefixInsensitiveStringMatcher); ok { |
|
|
numPrefixMatchers++ |
|
|
} |
|
|
}) |
|
|
|
|
|
require.Equal(t, c.expectedLiteralPrefixMatchers, numPrefixMatchers) |
|
|
|
|
|
for _, value := range c.expectedMatches { |
|
|
require.Truef(t, matcher.Matches(value), "Value: %s", value) |
|
|
|
|
|
// Ensure the golang regexp engine would return the same. |
|
|
require.Truef(t, re.MatchString(value), "Value: %s", value) |
|
|
} |
|
|
|
|
|
for _, value := range c.expectedNotMatches { |
|
|
require.Falsef(t, matcher.Matches(value), "Value: %s", value) |
|
|
|
|
|
// Ensure the golang regexp engine would return the same. |
|
|
require.Falsef(t, re.MatchString(value), "Value: %s", value) |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func TestStringMatcherFromRegexp_LiteralSuffix(t *testing.T) { |
|
|
for _, c := range []struct { |
|
|
pattern string |
|
|
expectedLiteralSuffixMatchers int |
|
|
expectedMatches []string |
|
|
expectedNotMatches []string |
|
|
}{ |
|
|
// Case sensitive. |
|
|
{ |
|
|
pattern: "(.*xyz-016a-ixb-dp|.*xyz-016a-ixb-op)", |
|
|
expectedLiteralSuffixMatchers: 2, |
|
|
expectedMatches: []string{"xyz-016a-ixb-dp", "XXXxyz-016a-ixb-dp", "xyz-016a-ixb-op", "XXXxyz-016a-ixb-op"}, |
|
|
expectedNotMatches: []string{"XYZ-016a-ixb-dp", "yz-016a-ixb-dp", "XYZ-016a-ixb-op", "xyz-016a-ixb-o", "xyz", "dp", "\nxyz-016a-ixb-dp"}, |
|
|
}, |
|
|
|
|
|
// Case insensitive. |
|
|
{ |
|
|
pattern: "(?i)(.*xyz-016a-ixb-dp|.*xyz-016a-ixb-op)", |
|
|
expectedLiteralSuffixMatchers: 2, |
|
|
expectedMatches: []string{"xyz-016a-ixb-dp", "XYZ-016a-ixb-dp", "XXXxyz-016a-ixb-dp", "XyZ-016a-ixb-op", "XXXxyz-016a-ixb-op"}, |
|
|
expectedNotMatches: []string{"yz-016a-ixb-dp", "xyz-016a-ixb-o", "xyz", "dp", "\nxyz-016a-ixb-dp"}, |
|
|
}, |
|
|
|
|
|
// Nested literal suffixes, case sensitive. |
|
|
{ |
|
|
pattern: "(.*aaa|.*bbb(.*ccc|.*ddd))", |
|
|
expectedLiteralSuffixMatchers: 3, |
|
|
expectedMatches: []string{"aaa", "XXXaaa", "bbbccc", "XXXbbbccc", "XXXbbbXXXccc", "bbbddd", "bbbddd", "XXXbbbddd", "XXXbbbXXXddd", "bbbXXXccc", "aaabbbccc", "aaabbbddd"}, |
|
|
expectedNotMatches: []string{"AAA", "aa", "Xaa", "BBBCCC", "bb", "Xbb", "bbccc", "bbbcc", "bbbdd"}, |
|
|
}, |
|
|
|
|
|
// Mixed case sensitivity. |
|
|
{ |
|
|
pattern: "(.*aaa|.*bbb((?i)(.*ccc|.*ddd)))", |
|
|
expectedLiteralSuffixMatchers: 3, |
|
|
expectedMatches: []string{"aaa", "XXXaaa", "bbbccc", "bbbCCC", "bbbXXXCCC", "bbbddd", "bbbDDD", "bbbXXXddd", "bbbXXXDDD"}, |
|
|
expectedNotMatches: []string{"AAA", "XXXAAA", "BBBccc", "BBBCCC", "aaaBBB"}, |
|
|
}, |
|
|
} { |
|
|
t.Run(c.pattern, func(t *testing.T) { |
|
|
parsed, err := syntax.Parse(c.pattern, syntax.Perl) |
|
|
require.NoError(t, err) |
|
|
|
|
|
matcher := stringMatcherFromRegexp(parsed) |
|
|
require.NotNil(t, matcher) |
|
|
|
|
|
re := regexp.MustCompile("^" + c.pattern + "$") |
|
|
|
|
|
// Pre-condition check: ensure it contains literalSuffixStringMatcher. |
|
|
numSuffixMatchers := 0 |
|
|
visitStringMatcher(matcher, func(matcher StringMatcher) { |
|
|
if _, ok := matcher.(*literalSuffixStringMatcher); ok { |
|
|
numSuffixMatchers++ |
|
|
} |
|
|
}) |
|
|
|
|
|
require.Equal(t, c.expectedLiteralSuffixMatchers, numSuffixMatchers) |
|
|
|
|
|
for _, value := range c.expectedMatches { |
|
|
require.Truef(t, matcher.Matches(value), "Value: %s", value) |
|
|
|
|
|
// Ensure the golang regexp engine would return the same. |
|
|
require.Truef(t, re.MatchString(value), "Value: %s", value) |
|
|
} |
|
|
|
|
|
for _, value := range c.expectedNotMatches { |
|
|
require.Falsef(t, matcher.Matches(value), "Value: %s", value) |
|
|
|
|
|
// Ensure the golang regexp engine would return the same. |
|
|
require.Falsef(t, re.MatchString(value), "Value: %s", value) |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func TestStringMatcherFromRegexp_Quest(t *testing.T) { |
|
|
for _, c := range []struct { |
|
|
pattern string |
|
|
expectedZeroOrOneMatchers int |
|
|
expectedMatches []string |
|
|
expectedNotMatches []string |
|
|
}{ |
|
|
// Not match newline. |
|
|
{ |
|
|
pattern: "test.?", |
|
|
expectedZeroOrOneMatchers: 1, |
|
|
expectedMatches: []string{"test", "test!"}, |
|
|
expectedNotMatches: []string{"test\n", "tes", "test!!"}, |
|
|
}, |
|
|
{ |
|
|
pattern: ".?test", |
|
|
expectedZeroOrOneMatchers: 1, |
|
|
expectedMatches: []string{"test", "!test"}, |
|
|
expectedNotMatches: []string{"\ntest", "tes", "test!"}, |
|
|
}, |
|
|
{ |
|
|
pattern: "(aaa.?|bbb.?)", |
|
|
expectedZeroOrOneMatchers: 2, |
|
|
expectedMatches: []string{"aaa", "aaaX", "bbb", "bbbX"}, |
|
|
expectedNotMatches: []string{"aa", "aaaXX", "aaa\n", "bb", "bbbXX", "bbb\n"}, |
|
|
}, |
|
|
{ |
|
|
pattern: ".*aaa.?", |
|
|
expectedZeroOrOneMatchers: 1, |
|
|
expectedMatches: []string{"aaa", "Xaaa", "aaaX", "XXXaaa", "XXXaaaX"}, |
|
|
expectedNotMatches: []string{"aa", "aaaXX", "XXXaaaXXX", "XXXaaa\n"}, |
|
|
}, |
|
|
|
|
|
// Match newline. |
|
|
{ |
|
|
pattern: "(?s)test.?", |
|
|
expectedZeroOrOneMatchers: 1, |
|
|
expectedMatches: []string{"test", "test!", "test\n"}, |
|
|
expectedNotMatches: []string{"tes", "test!!", "test\n\n"}, |
|
|
}, |
|
|
|
|
|
// Mixed flags (a part matches newline another doesn't). |
|
|
{ |
|
|
pattern: "(aaa.?|((?s).?bbb.+))", |
|
|
expectedZeroOrOneMatchers: 2, |
|
|
expectedMatches: []string{"aaa", "aaaX", "bbbX", "XbbbX", "bbbXXX", "\nbbbX"}, |
|
|
expectedNotMatches: []string{"aa", "aaa\n", "Xbbb", "\nbbb"}, |
|
|
}, |
|
|
} { |
|
|
t.Run(c.pattern, func(t *testing.T) { |
|
|
parsed, err := syntax.Parse(c.pattern, syntax.Perl) |
|
|
require.NoError(t, err) |
|
|
|
|
|
matcher := stringMatcherFromRegexp(parsed) |
|
|
require.NotNil(t, matcher) |
|
|
|
|
|
re := regexp.MustCompile("^" + c.pattern + "$") |
|
|
|
|
|
// Pre-condition check: ensure it contains zeroOrOneCharacterStringMatcher. |
|
|
numZeroOrOneMatchers := 0 |
|
|
visitStringMatcher(matcher, func(matcher StringMatcher) { |
|
|
if _, ok := matcher.(*zeroOrOneCharacterStringMatcher); ok { |
|
|
numZeroOrOneMatchers++ |
|
|
} |
|
|
}) |
|
|
|
|
|
require.Equal(t, c.expectedZeroOrOneMatchers, numZeroOrOneMatchers) |
|
|
|
|
|
for _, value := range c.expectedMatches { |
|
|
require.Truef(t, matcher.Matches(value), "Value: %s", value) |
|
|
|
|
|
// Ensure the golang regexp engine would return the same. |
|
|
require.Truef(t, re.MatchString(value), "Value: %s", value) |
|
|
} |
|
|
|
|
|
for _, value := range c.expectedNotMatches { |
|
|
require.Falsef(t, matcher.Matches(value), "Value: %s", value) |
|
|
|
|
|
// Ensure the golang regexp engine would return the same. |
|
|
require.Falsef(t, re.MatchString(value), "Value: %s", value) |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func randString(randGenerator *rand.Rand, length int) string { |
|
|
b := make([]rune, length) |
|
|
for i := range b { |
|
|
b[i] = asciiRunes[randGenerator.Intn(len(asciiRunes))] |
|
|
} |
|
|
return string(b) |
|
|
} |
|
|
|
|
|
func randStrings(randGenerator *rand.Rand, many, length int) []string { |
|
|
out := make([]string, 0, many) |
|
|
for i := 0; i < many; i++ { |
|
|
out = append(out, randString(randGenerator, length)) |
|
|
} |
|
|
return out |
|
|
} |
|
|
|
|
|
func randStringsWithSuffix(randGenerator *rand.Rand, many, length int, suffix string) []string { |
|
|
out := randStrings(randGenerator, many, length) |
|
|
for i := range out { |
|
|
out[i] += suffix |
|
|
} |
|
|
return out |
|
|
} |
|
|
|
|
|
func TestOptimizeEqualOrPrefixStringMatchers(t *testing.T) { |
|
|
tests := map[string]struct { |
|
|
input StringMatcher |
|
|
expectedValues []string |
|
|
expectedCaseSensitive bool |
|
|
}{ |
|
|
"should skip optimization on orStringMatcher with containsStringMatcher": { |
|
|
input: orStringMatcher{ |
|
|
&equalStringMatcher{s: "FOO", caseSensitive: true}, |
|
|
&containsStringMatcher{substrings: []string{"a", "b", "c"}}, |
|
|
}, |
|
|
expectedValues: nil, |
|
|
}, |
|
|
"should run optimization on orStringMatcher with equalStringMatcher and same case sensitivity": { |
|
|
input: orStringMatcher{ |
|
|
&equalStringMatcher{s: "FOO", caseSensitive: true}, |
|
|
&equalStringMatcher{s: "bar", caseSensitive: true}, |
|
|
&equalStringMatcher{s: "baz", caseSensitive: true}, |
|
|
}, |
|
|
expectedValues: []string{"FOO", "bar", "baz"}, |
|
|
expectedCaseSensitive: true, |
|
|
}, |
|
|
"should skip optimization on orStringMatcher with equalStringMatcher but different case sensitivity": { |
|
|
input: orStringMatcher{ |
|
|
&equalStringMatcher{s: "FOO", caseSensitive: true}, |
|
|
&equalStringMatcher{s: "bar", caseSensitive: false}, |
|
|
&equalStringMatcher{s: "baz", caseSensitive: true}, |
|
|
}, |
|
|
expectedValues: nil, |
|
|
}, |
|
|
"should run optimization on orStringMatcher with nested orStringMatcher and equalStringMatcher, and same case sensitivity": { |
|
|
input: orStringMatcher{ |
|
|
&equalStringMatcher{s: "FOO", caseSensitive: true}, |
|
|
orStringMatcher{ |
|
|
&equalStringMatcher{s: "bar", caseSensitive: true}, |
|
|
&equalStringMatcher{s: "xxx", caseSensitive: true}, |
|
|
}, |
|
|
&equalStringMatcher{s: "baz", caseSensitive: true}, |
|
|
}, |
|
|
expectedValues: []string{"FOO", "bar", "xxx", "baz"}, |
|
|
expectedCaseSensitive: true, |
|
|
}, |
|
|
"should skip optimization on orStringMatcher with nested orStringMatcher and equalStringMatcher, but different case sensitivity": { |
|
|
input: orStringMatcher{ |
|
|
&equalStringMatcher{s: "FOO", caseSensitive: true}, |
|
|
orStringMatcher{ |
|
|
// Case sensitivity is different within items at the same level. |
|
|
&equalStringMatcher{s: "bar", caseSensitive: true}, |
|
|
&equalStringMatcher{s: "xxx", caseSensitive: false}, |
|
|
}, |
|
|
&equalStringMatcher{s: "baz", caseSensitive: true}, |
|
|
}, |
|
|
expectedValues: nil, |
|
|
}, |
|
|
"should skip optimization on orStringMatcher with nested orStringMatcher and equalStringMatcher, but different case sensitivity in the nested one": { |
|
|
input: orStringMatcher{ |
|
|
&equalStringMatcher{s: "FOO", caseSensitive: true}, |
|
|
// Case sensitivity is different between the parent and child. |
|
|
orStringMatcher{ |
|
|
&equalStringMatcher{s: "bar", caseSensitive: false}, |
|
|
&equalStringMatcher{s: "xxx", caseSensitive: false}, |
|
|
}, |
|
|
&equalStringMatcher{s: "baz", caseSensitive: true}, |
|
|
}, |
|
|
expectedValues: nil, |
|
|
}, |
|
|
"should return unchanged values on few case insensitive matchers": { |
|
|
input: orStringMatcher{ |
|
|
&equalStringMatcher{s: "FOO", caseSensitive: false}, |
|
|
orStringMatcher{ |
|
|
&equalStringMatcher{s: "bAr", caseSensitive: false}, |
|
|
}, |
|
|
&equalStringMatcher{s: "baZ", caseSensitive: false}, |
|
|
}, |
|
|
expectedValues: []string{"FOO", "bAr", "baZ"}, |
|
|
expectedCaseSensitive: false, |
|
|
}, |
|
|
} |
|
|
|
|
|
for testName, testData := range tests { |
|
|
t.Run(testName, func(t *testing.T) { |
|
|
actualMatcher := optimizeEqualOrPrefixStringMatchers(testData.input, 0) |
|
|
|
|
|
if testData.expectedValues == nil { |
|
|
require.IsType(t, testData.input, actualMatcher) |
|
|
} else { |
|
|
require.IsType(t, &equalMultiStringSliceMatcher{}, actualMatcher) |
|
|
require.Equal(t, testData.expectedValues, actualMatcher.(*equalMultiStringSliceMatcher).values) |
|
|
require.Equal(t, testData.expectedCaseSensitive, actualMatcher.(*equalMultiStringSliceMatcher).caseSensitive) |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func TestNewEqualMultiStringMatcher(t *testing.T) { |
|
|
tests := map[string]struct { |
|
|
values []string |
|
|
caseSensitivePrefixes []*literalPrefixSensitiveStringMatcher |
|
|
caseSensitive bool |
|
|
expectedValuesMap map[string]struct{} |
|
|
expectedPrefixesMap map[string][]StringMatcher |
|
|
expectedValuesList []string |
|
|
}{ |
|
|
"few case sensitive values": { |
|
|
values: []string{"a", "B"}, |
|
|
caseSensitive: true, |
|
|
expectedValuesList: []string{"a", "B"}, |
|
|
}, |
|
|
"few case insensitive values": { |
|
|
values: []string{"a", "B"}, |
|
|
caseSensitive: false, |
|
|
expectedValuesList: []string{"a", "B"}, |
|
|
}, |
|
|
"few case sensitive values and prefixes": { |
|
|
values: []string{"a"}, |
|
|
caseSensitivePrefixes: []*literalPrefixSensitiveStringMatcher{{prefix: "B", right: anyStringWithoutNewlineMatcher{}}}, |
|
|
caseSensitive: true, |
|
|
expectedValuesMap: map[string]struct{}{"a": {}}, |
|
|
expectedPrefixesMap: map[string][]StringMatcher{"B": {&literalPrefixSensitiveStringMatcher{prefix: "B", right: anyStringWithoutNewlineMatcher{}}}}, |
|
|
}, |
|
|
"many case sensitive values": { |
|
|
values: []string{"a", "B", "c", "D", "e", "F", "g", "H", "i", "L", "m", "N", "o", "P", "q", "r"}, |
|
|
caseSensitive: true, |
|
|
expectedValuesMap: map[string]struct{}{"a": {}, "B": {}, "c": {}, "D": {}, "e": {}, "F": {}, "g": {}, "H": {}, "i": {}, "L": {}, "m": {}, "N": {}, "o": {}, "P": {}, "q": {}, "r": {}}, |
|
|
expectedPrefixesMap: map[string][]StringMatcher{}, |
|
|
}, |
|
|
"many case insensitive values": { |
|
|
values: []string{"a", "B", "c", "D", "e", "F", "g", "H", "i", "L", "m", "N", "o", "P", "q", "r"}, |
|
|
caseSensitive: false, |
|
|
expectedValuesMap: map[string]struct{}{"a": {}, "b": {}, "c": {}, "d": {}, "e": {}, "f": {}, "g": {}, "h": {}, "i": {}, "l": {}, "m": {}, "n": {}, "o": {}, "p": {}, "q": {}, "r": {}}, |
|
|
expectedPrefixesMap: map[string][]StringMatcher{}, |
|
|
}, |
|
|
} |
|
|
|
|
|
for testName, testData := range tests { |
|
|
t.Run(testName, func(t *testing.T) { |
|
|
// To keep this test simple, we always assume a min prefix length of 1. |
|
|
minPrefixLength := 0 |
|
|
if len(testData.caseSensitivePrefixes) > 0 { |
|
|
minPrefixLength = 1 |
|
|
} |
|
|
|
|
|
matcher := newEqualMultiStringMatcher(testData.caseSensitive, len(testData.values), len(testData.caseSensitivePrefixes), minPrefixLength) |
|
|
for _, v := range testData.values { |
|
|
matcher.add(v) |
|
|
} |
|
|
for _, p := range testData.caseSensitivePrefixes { |
|
|
matcher.addPrefix(p.prefix, true, p) |
|
|
} |
|
|
|
|
|
if testData.expectedValuesMap != nil || testData.expectedPrefixesMap != nil { |
|
|
require.IsType(t, &equalMultiStringMapMatcher{}, matcher) |
|
|
require.Equal(t, testData.expectedValuesMap, matcher.(*equalMultiStringMapMatcher).values) |
|
|
require.Equal(t, testData.expectedPrefixesMap, matcher.(*equalMultiStringMapMatcher).prefixes) |
|
|
require.Equal(t, testData.caseSensitive, matcher.(*equalMultiStringMapMatcher).caseSensitive) |
|
|
} |
|
|
if testData.expectedValuesList != nil { |
|
|
require.IsType(t, &equalMultiStringSliceMatcher{}, matcher) |
|
|
require.Equal(t, testData.expectedValuesList, matcher.(*equalMultiStringSliceMatcher).values) |
|
|
require.Equal(t, testData.caseSensitive, matcher.(*equalMultiStringSliceMatcher).caseSensitive) |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func TestEqualMultiStringMapMatcher_addPrefix(t *testing.T) { |
|
|
t.Run("should panic if the matcher is case sensitive but the prefix is not case sensitive", func(t *testing.T) { |
|
|
matcher := newEqualMultiStringMatcher(true, 0, 1, 1) |
|
|
|
|
|
require.Panics(t, func() { |
|
|
matcher.addPrefix("a", false, &literalPrefixInsensitiveStringMatcher{ |
|
|
prefix: "a", |
|
|
}) |
|
|
}) |
|
|
}) |
|
|
|
|
|
t.Run("should panic if the matcher is not case sensitive but the prefix is case sensitive", func(t *testing.T) { |
|
|
matcher := newEqualMultiStringMatcher(false, 0, 1, 1) |
|
|
|
|
|
require.Panics(t, func() { |
|
|
matcher.addPrefix("a", true, &literalPrefixSensitiveStringMatcher{ |
|
|
prefix: "a", |
|
|
}) |
|
|
}) |
|
|
}) |
|
|
} |
|
|
|
|
|
func TestEqualMultiStringMatcher_Matches(t *testing.T) { |
|
|
tests := map[string]struct { |
|
|
values []string |
|
|
prefixes []StringMatcher |
|
|
caseSensitive bool |
|
|
expectedMatches []string |
|
|
expectedNotMatches []string |
|
|
}{ |
|
|
"few case sensitive values": { |
|
|
values: []string{"a", "B"}, |
|
|
caseSensitive: true, |
|
|
expectedMatches: []string{"a", "B"}, |
|
|
expectedNotMatches: []string{"A", "b"}, |
|
|
}, |
|
|
"few case insensitive values": { |
|
|
values: []string{"a", "B"}, |
|
|
caseSensitive: false, |
|
|
expectedMatches: []string{"a", "A", "b", "B"}, |
|
|
expectedNotMatches: []string{"c", "C"}, |
|
|
}, |
|
|
"few case sensitive prefixes": { |
|
|
prefixes: []StringMatcher{ |
|
|
&literalPrefixSensitiveStringMatcher{prefix: "a", right: anyStringWithoutNewlineMatcher{}}, |
|
|
&literalPrefixSensitiveStringMatcher{prefix: "B", right: anyStringWithoutNewlineMatcher{}}, |
|
|
}, |
|
|
caseSensitive: true, |
|
|
expectedMatches: []string{"a", "aX", "B", "BX"}, |
|
|
expectedNotMatches: []string{"A", "b"}, |
|
|
}, |
|
|
"few case insensitive prefixes": { |
|
|
prefixes: []StringMatcher{ |
|
|
&literalPrefixInsensitiveStringMatcher{prefix: "a", right: anyStringWithoutNewlineMatcher{}}, |
|
|
&literalPrefixInsensitiveStringMatcher{prefix: "B", right: anyStringWithoutNewlineMatcher{}}, |
|
|
}, |
|
|
caseSensitive: false, |
|
|
expectedMatches: []string{"a", "aX", "A", "AX", "b", "bX", "B", "BX"}, |
|
|
expectedNotMatches: []string{"c", "cX", "C", "CX"}, |
|
|
}, |
|
|
"many case sensitive values": { |
|
|
values: []string{"a", "B", "c", "D", "e", "F", "g", "H", "i", "L", "m", "N", "o", "P", "q", "r"}, |
|
|
caseSensitive: true, |
|
|
expectedMatches: []string{"a", "B"}, |
|
|
expectedNotMatches: []string{"A", "b"}, |
|
|
}, |
|
|
"many case insensitive values": { |
|
|
values: []string{"a", "B", "c", "D", "e", "F", "g", "H", "i", "L", "m", "N", "o", "P", "q", "r"}, |
|
|
caseSensitive: false, |
|
|
expectedMatches: []string{"a", "A", "b", "B"}, |
|
|
expectedNotMatches: []string{"x", "X"}, |
|
|
}, |
|
|
"mixed values and prefixes": { |
|
|
values: []string{"a"}, |
|
|
prefixes: []StringMatcher{&literalPrefixSensitiveStringMatcher{prefix: "B", right: anyStringWithoutNewlineMatcher{}}}, |
|
|
caseSensitive: true, |
|
|
expectedMatches: []string{"a", "B", "BX"}, |
|
|
expectedNotMatches: []string{"aX", "A", "b", "bX"}, |
|
|
}, |
|
|
} |
|
|
|
|
|
for testName, testData := range tests { |
|
|
t.Run(testName, func(t *testing.T) { |
|
|
// To keep this test simple, we always assume a min prefix length of 1. |
|
|
minPrefixLength := 0 |
|
|
if len(testData.prefixes) > 0 { |
|
|
minPrefixLength = 1 |
|
|
} |
|
|
|
|
|
matcher := newEqualMultiStringMatcher(testData.caseSensitive, len(testData.values), len(testData.prefixes), minPrefixLength) |
|
|
for _, v := range testData.values { |
|
|
matcher.add(v) |
|
|
} |
|
|
for _, p := range testData.prefixes { |
|
|
switch m := p.(type) { |
|
|
case *literalPrefixSensitiveStringMatcher: |
|
|
matcher.addPrefix(m.prefix, true, p) |
|
|
case *literalPrefixInsensitiveStringMatcher: |
|
|
matcher.addPrefix(m.prefix, false, p) |
|
|
default: |
|
|
panic("Unexpected type in test case") |
|
|
} |
|
|
} |
|
|
|
|
|
for _, v := range testData.expectedMatches { |
|
|
require.True(t, matcher.Matches(v), "value: %s", v) |
|
|
} |
|
|
for _, v := range testData.expectedNotMatches { |
|
|
require.False(t, matcher.Matches(v), "value: %s", v) |
|
|
} |
|
|
}) |
|
|
} |
|
|
} |
|
|
|
|
|
func TestFindEqualOrPrefixStringMatchers(t *testing.T) { |
|
|
type match struct { |
|
|
s string |
|
|
caseSensitive bool |
|
|
} |
|
|
|
|
|
// Utility to call findEqualOrPrefixStringMatchers() and collect all callback invocations. |
|
|
findEqualOrPrefixStringMatchersAndCollectMatches := func(input StringMatcher) (matches []match, ok bool) { |
|
|
ok = findEqualOrPrefixStringMatchers(input, func(matcher *equalStringMatcher) bool { |
|
|
matches = append(matches, match{matcher.s, matcher.caseSensitive}) |
|
|
return true |
|
|
}, func(prefix string, prefixCaseSensitive bool, right StringMatcher) bool { |
|
|
matches = append(matches, match{prefix, prefixCaseSensitive}) |
|
|
return true |
|
|
}) |
|
|
|
|
|
return |
|
|
} |
|
|
|
|
|
t.Run("empty matcher", func(t *testing.T) { |
|
|
actualMatches, actualOk := findEqualOrPrefixStringMatchersAndCollectMatches(emptyStringMatcher{}) |
|
|
require.False(t, actualOk) |
|
|
require.Empty(t, actualMatches) |
|
|
}) |
|
|
|
|
|
t.Run("concat of literal matchers (case sensitive)", func(t *testing.T) { |
|
|
actualMatches, actualOk := findEqualOrPrefixStringMatchersAndCollectMatches( |
|
|
orStringMatcher{ |
|
|
&equalStringMatcher{s: "test-1", caseSensitive: true}, |
|
|
&equalStringMatcher{s: "test-2", caseSensitive: true}, |
|
|
}, |
|
|
) |
|
|
|
|
|
require.True(t, actualOk) |
|
|
require.Equal(t, []match{{"test-1", true}, {"test-2", true}}, actualMatches) |
|
|
}) |
|
|
|
|
|
t.Run("concat of literal matchers (case insensitive)", func(t *testing.T) { |
|
|
actualMatches, actualOk := findEqualOrPrefixStringMatchersAndCollectMatches( |
|
|
orStringMatcher{ |
|
|
&equalStringMatcher{s: "test-1", caseSensitive: false}, |
|
|
&equalStringMatcher{s: "test-2", caseSensitive: false}, |
|
|
}, |
|
|
) |
|
|
|
|
|
require.True(t, actualOk) |
|
|
require.Equal(t, []match{{"test-1", false}, {"test-2", false}}, actualMatches) |
|
|
}) |
|
|
|
|
|
t.Run("concat of literal matchers (mixed case)", func(t *testing.T) { |
|
|
actualMatches, actualOk := findEqualOrPrefixStringMatchersAndCollectMatches( |
|
|
orStringMatcher{ |
|
|
&equalStringMatcher{s: "test-1", caseSensitive: false}, |
|
|
&equalStringMatcher{s: "test-2", caseSensitive: true}, |
|
|
}, |
|
|
) |
|
|
|
|
|
require.True(t, actualOk) |
|
|
require.Equal(t, []match{{"test-1", false}, {"test-2", true}}, actualMatches) |
|
|
}) |
|
|
|
|
|
t.Run("concat of literal prefix matchers (case sensitive)", func(t *testing.T) { |
|
|
actualMatches, actualOk := findEqualOrPrefixStringMatchersAndCollectMatches( |
|
|
orStringMatcher{ |
|
|
&literalPrefixSensitiveStringMatcher{prefix: "test-1"}, |
|
|
&literalPrefixSensitiveStringMatcher{prefix: "test-2"}, |
|
|
}, |
|
|
) |
|
|
|
|
|
require.True(t, actualOk) |
|
|
require.Equal(t, []match{{"test-1", true}, {"test-2", true}}, actualMatches) |
|
|
}) |
|
|
|
|
|
t.Run("concat of literal prefix matchers (case insensitive)", func(t *testing.T) { |
|
|
actualMatches, actualOk := findEqualOrPrefixStringMatchersAndCollectMatches( |
|
|
orStringMatcher{ |
|
|
&literalPrefixInsensitiveStringMatcher{prefix: "test-1"}, |
|
|
&literalPrefixInsensitiveStringMatcher{prefix: "test-2"}, |
|
|
}, |
|
|
) |
|
|
|
|
|
require.True(t, actualOk) |
|
|
require.Equal(t, []match{{"test-1", false}, {"test-2", false}}, actualMatches) |
|
|
}) |
|
|
|
|
|
t.Run("concat of literal prefix matchers (mixed case)", func(t *testing.T) { |
|
|
actualMatches, actualOk := findEqualOrPrefixStringMatchersAndCollectMatches( |
|
|
orStringMatcher{ |
|
|
&literalPrefixInsensitiveStringMatcher{prefix: "test-1"}, |
|
|
&literalPrefixSensitiveStringMatcher{prefix: "test-2"}, |
|
|
}, |
|
|
) |
|
|
|
|
|
require.True(t, actualOk) |
|
|
require.Equal(t, []match{{"test-1", false}, {"test-2", true}}, actualMatches) |
|
|
}) |
|
|
|
|
|
t.Run("concat of literal string and prefix matchers (case sensitive)", func(t *testing.T) { |
|
|
actualMatches, actualOk := findEqualOrPrefixStringMatchersAndCollectMatches( |
|
|
orStringMatcher{ |
|
|
&equalStringMatcher{s: "test-1", caseSensitive: true}, |
|
|
&literalPrefixSensitiveStringMatcher{prefix: "test-2"}, |
|
|
}, |
|
|
) |
|
|
|
|
|
require.True(t, actualOk) |
|
|
require.Equal(t, []match{{"test-1", true}, {"test-2", true}}, actualMatches) |
|
|
}) |
|
|
} |
|
|
|
|
|
// This benchmark is used to find a good threshold to use to apply the optimization |
|
|
// done by optimizeEqualOrPrefixStringMatchers(). |
|
|
func BenchmarkOptimizeEqualOrPrefixStringMatchers(b *testing.B) { |
|
|
randGenerator := rand.New(rand.NewSource(time.Now().UnixNano())) |
|
|
|
|
|
// Generate variable lengths random texts to match against. |
|
|
texts := append([]string{}, randStrings(randGenerator, 10, 10)...) |
|
|
texts = append(texts, randStrings(randGenerator, 5, 30)...) |
|
|
texts = append(texts, randStrings(randGenerator, 1, 100)...) |
|
|
|
|
|
for numAlternations := 2; numAlternations <= 256; numAlternations *= 2 { |
|
|
for _, caseSensitive := range []bool{true, false} { |
|
|
for _, prefixMatcher := range []bool{true, false} { |
|
|
b.Run(fmt.Sprintf("alternations: %d case sensitive: %t prefix matcher: %t", numAlternations, caseSensitive, prefixMatcher), func(b *testing.B) { |
|
|
// If the test should run on prefix matchers, we add a wildcard matcher as suffix (prefix will be a literal). |
|
|
suffix := "" |
|
|
if prefixMatcher { |
|
|
suffix = ".*" |
|
|
} |
|
|
|
|
|
// Generate a regex with the expected number of alternations. |
|
|
re := strings.Join(randStringsWithSuffix(randGenerator, numAlternations, 10, suffix), "|") |
|
|
if !caseSensitive { |
|
|
re = "(?i:(" + re + "))" |
|
|
} |
|
|
b.Logf("regexp: %s", re) |
|
|
|
|
|
parsed, err := syntax.Parse(re, syntax.Perl) |
|
|
require.NoError(b, err) |
|
|
|
|
|
unoptimized := stringMatcherFromRegexpInternal(parsed) |
|
|
require.IsType(b, orStringMatcher{}, unoptimized) |
|
|
|
|
|
optimized := optimizeEqualOrPrefixStringMatchers(unoptimized, 0) |
|
|
if numAlternations < minEqualMultiStringMatcherMapThreshold && !prefixMatcher { |
|
|
require.IsType(b, &equalMultiStringSliceMatcher{}, optimized) |
|
|
} else { |
|
|
require.IsType(b, &equalMultiStringMapMatcher{}, optimized) |
|
|
} |
|
|
|
|
|
b.Run("without optimizeEqualOrPrefixStringMatchers()", func(b *testing.B) { |
|
|
for n := 0; n < b.N; n++ { |
|
|
for _, t := range texts { |
|
|
unoptimized.Matches(t) |
|
|
} |
|
|
} |
|
|
}) |
|
|
|
|
|
b.Run("with optimizeEqualOrPrefixStringMatchers()", func(b *testing.B) { |
|
|
for n := 0; n < b.N; n++ { |
|
|
for _, t := range texts { |
|
|
optimized.Matches(t) |
|
|
} |
|
|
} |
|
|
}) |
|
|
}) |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
func TestZeroOrOneCharacterStringMatcher(t *testing.T) { |
|
|
t.Run("match newline", func(t *testing.T) { |
|
|
matcher := &zeroOrOneCharacterStringMatcher{matchNL: true} |
|
|
require.True(t, matcher.Matches("")) |
|
|
require.True(t, matcher.Matches("x")) |
|
|
require.True(t, matcher.Matches("\n")) |
|
|
require.False(t, matcher.Matches("xx")) |
|
|
require.False(t, matcher.Matches("\n\n")) |
|
|
}) |
|
|
|
|
|
t.Run("do not match newline", func(t *testing.T) { |
|
|
matcher := &zeroOrOneCharacterStringMatcher{matchNL: false} |
|
|
require.True(t, matcher.Matches("")) |
|
|
require.True(t, matcher.Matches("x")) |
|
|
require.False(t, matcher.Matches("\n")) |
|
|
require.False(t, matcher.Matches("xx")) |
|
|
require.False(t, matcher.Matches("\n\n")) |
|
|
}) |
|
|
|
|
|
t.Run("unicode", func(t *testing.T) { |
|
|
// Just for documentation purposes, emoji1 is 1 rune, emoji2 is 2 runes. |
|
|
// Having this in mind, will make future readers fixing tests easier. |
|
|
emoji1 := "😀" |
|
|
emoji2 := "❤️" |
|
|
require.Equal(t, 1, utf8.RuneCountInString(emoji1)) |
|
|
require.Equal(t, 2, utf8.RuneCountInString(emoji2)) |
|
|
|
|
|
matcher := &zeroOrOneCharacterStringMatcher{matchNL: true} |
|
|
require.True(t, matcher.Matches(emoji1)) |
|
|
require.False(t, matcher.Matches(emoji2)) |
|
|
require.False(t, matcher.Matches(emoji1+emoji1)) |
|
|
require.False(t, matcher.Matches("x"+emoji1)) |
|
|
require.False(t, matcher.Matches(emoji1+"x")) |
|
|
require.False(t, matcher.Matches(emoji1+emoji2)) |
|
|
}) |
|
|
|
|
|
t.Run("invalid unicode", func(t *testing.T) { |
|
|
// Just for reference, we also compare to what `^.?$` regular expression matches. |
|
|
re := regexp.MustCompile("^.?$") |
|
|
matcher := &zeroOrOneCharacterStringMatcher{matchNL: true} |
|
|
|
|
|
requireMatches := func(s string, expected bool) { |
|
|
t.Helper() |
|
|
require.Equal(t, expected, matcher.Matches(s)) |
|
|
require.Equal(t, re.MatchString(s), matcher.Matches(s)) |
|
|
} |
|
|
|
|
|
requireMatches("\xff", true) |
|
|
requireMatches("x\xff", false) |
|
|
requireMatches("\xffx", false) |
|
|
requireMatches("\xff\xfe", false) |
|
|
}) |
|
|
} |
|
|
|
|
|
func BenchmarkZeroOrOneCharacterStringMatcher(b *testing.B) { |
|
|
type benchCase struct { |
|
|
str string |
|
|
matches bool |
|
|
} |
|
|
|
|
|
emoji1 := "😀" |
|
|
emoji2 := "❤️" |
|
|
cases := []benchCase{ |
|
|
{"", true}, |
|
|
{"x", true}, |
|
|
{"\n", true}, |
|
|
{"xx", false}, |
|
|
{"\n\n", false}, |
|
|
{emoji1, true}, |
|
|
{emoji2, false}, |
|
|
{emoji1 + emoji1, false}, |
|
|
{strings.Repeat("x", 100), false}, |
|
|
{strings.Repeat(emoji1, 100), false}, |
|
|
{strings.Repeat(emoji2, 100), false}, |
|
|
} |
|
|
|
|
|
matcher := &zeroOrOneCharacterStringMatcher{matchNL: true} |
|
|
b.ResetTimer() |
|
|
|
|
|
for n := 0; n < b.N; n++ { |
|
|
c := cases[n%len(cases)] |
|
|
got := matcher.Matches(c.str) |
|
|
if got != c.matches { |
|
|
b.Fatalf("unexpected result for %q: got %t, want %t", c.str, got, c.matches) |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
func TestLiteralPrefixSensitiveStringMatcher(t *testing.T) { |
|
|
m := &literalPrefixSensitiveStringMatcher{prefix: "mar", right: &emptyStringMatcher{}} |
|
|
require.True(t, m.Matches("mar")) |
|
|
require.False(t, m.Matches("marco")) |
|
|
require.False(t, m.Matches("ma")) |
|
|
require.False(t, m.Matches("mAr")) |
|
|
|
|
|
m = &literalPrefixSensitiveStringMatcher{prefix: "mar", right: &equalStringMatcher{s: "co", caseSensitive: false}} |
|
|
require.True(t, m.Matches("marco")) |
|
|
require.True(t, m.Matches("marCO")) |
|
|
require.False(t, m.Matches("MARco")) |
|
|
require.False(t, m.Matches("mar")) |
|
|
require.False(t, m.Matches("marcopracucci")) |
|
|
} |
|
|
|
|
|
func TestLiteralPrefixInsensitiveStringMatcher(t *testing.T) { |
|
|
m := &literalPrefixInsensitiveStringMatcher{prefix: "mar", right: &emptyStringMatcher{}} |
|
|
require.True(t, m.Matches("mar")) |
|
|
require.False(t, m.Matches("marco")) |
|
|
require.False(t, m.Matches("ma")) |
|
|
require.True(t, m.Matches("mAr")) |
|
|
} |
|
|
|
|
|
func TestLiteralSuffixStringMatcher(t *testing.T) { |
|
|
m := &literalSuffixStringMatcher{left: &emptyStringMatcher{}, suffix: "co", suffixCaseSensitive: true} |
|
|
require.True(t, m.Matches("co")) |
|
|
require.False(t, m.Matches("marco")) |
|
|
require.False(t, m.Matches("coo")) |
|
|
require.False(t, m.Matches("Co")) |
|
|
|
|
|
m = &literalSuffixStringMatcher{left: &emptyStringMatcher{}, suffix: "co", suffixCaseSensitive: false} |
|
|
require.True(t, m.Matches("co")) |
|
|
require.False(t, m.Matches("marco")) |
|
|
require.False(t, m.Matches("coo")) |
|
|
require.True(t, m.Matches("Co")) |
|
|
|
|
|
m = &literalSuffixStringMatcher{left: &equalStringMatcher{s: "mar", caseSensitive: false}, suffix: "co", suffixCaseSensitive: true} |
|
|
require.True(t, m.Matches("marco")) |
|
|
require.True(t, m.Matches("MARco")) |
|
|
require.False(t, m.Matches("marCO")) |
|
|
require.False(t, m.Matches("mar")) |
|
|
require.False(t, m.Matches("marcopracucci")) |
|
|
|
|
|
m = &literalSuffixStringMatcher{left: &equalStringMatcher{s: "mar", caseSensitive: false}, suffix: "co", suffixCaseSensitive: false} |
|
|
require.True(t, m.Matches("marco")) |
|
|
require.True(t, m.Matches("MARco")) |
|
|
require.True(t, m.Matches("marCO")) |
|
|
require.False(t, m.Matches("mar")) |
|
|
require.False(t, m.Matches("marcopracucci")) |
|
|
} |
|
|
|
|
|
func TestHasPrefixCaseInsensitive(t *testing.T) { |
|
|
require.True(t, hasPrefixCaseInsensitive("marco", "mar")) |
|
|
require.True(t, hasPrefixCaseInsensitive("mArco", "mar")) |
|
|
require.True(t, hasPrefixCaseInsensitive("marco", "MaR")) |
|
|
require.True(t, hasPrefixCaseInsensitive("marco", "marco")) |
|
|
require.True(t, hasPrefixCaseInsensitive("mArco", "marco")) |
|
|
|
|
|
require.False(t, hasPrefixCaseInsensitive("marco", "a")) |
|
|
require.False(t, hasPrefixCaseInsensitive("marco", "abcdefghi")) |
|
|
} |
|
|
|
|
|
func TestHasSuffixCaseInsensitive(t *testing.T) { |
|
|
require.True(t, hasSuffixCaseInsensitive("marco", "rco")) |
|
|
require.True(t, hasSuffixCaseInsensitive("marco", "RcO")) |
|
|
require.True(t, hasSuffixCaseInsensitive("marco", "marco")) |
|
|
require.False(t, hasSuffixCaseInsensitive("marco", "a")) |
|
|
require.False(t, hasSuffixCaseInsensitive("marco", "abcdefghi")) |
|
|
} |
|
|
|
|
|
func TestContainsInOrder(t *testing.T) { |
|
|
require.True(t, containsInOrder("abcdefghilmno", []string{"ab", "cd", "no"})) |
|
|
require.True(t, containsInOrder("abcdefghilmno", []string{"def", "hil"})) |
|
|
|
|
|
require.False(t, containsInOrder("abcdefghilmno", []string{"ac"})) |
|
|
require.False(t, containsInOrder("abcdefghilmno", []string{"ab", "cd", "de"})) |
|
|
require.False(t, containsInOrder("abcdefghilmno", []string{"cd", "ab"})) |
|
|
} |
|
|
|
|
|
func getTestNameFromRegexp(re string) string { |
|
|
if len(re) > 32 { |
|
|
return re[:32] |
|
|
} |
|
|
return re |
|
|
} |
|
|
|
|
|
func generateRandomValues() []string { |
|
|
// Init the random seed with a constant, so that it doesn't change between runs. |
|
|
randGenerator := rand.New(rand.NewSource(1)) |
|
|
|
|
|
// Generate variable lengths random texts to match against. |
|
|
texts := append([]string{}, randStrings(randGenerator, 10, 10)...) |
|
|
texts = append(texts, randStrings(randGenerator, 5, 30)...) |
|
|
texts = append(texts, randStrings(randGenerator, 1, 100)...) |
|
|
texts = append(texts, "foo"+randString(randGenerator, 50)) |
|
|
texts = append(texts, randString(randGenerator, 50)+"foo") |
|
|
|
|
|
return texts |
|
|
} |
|
|
|
|
|
func visitStringMatcher(matcher StringMatcher, callback func(matcher StringMatcher)) { |
|
|
callback(matcher) |
|
|
|
|
|
switch casted := matcher.(type) { |
|
|
case *containsStringMatcher: |
|
|
if casted.left != nil { |
|
|
visitStringMatcher(casted.left, callback) |
|
|
} |
|
|
if casted.right != nil { |
|
|
visitStringMatcher(casted.right, callback) |
|
|
} |
|
|
|
|
|
case *literalPrefixSensitiveStringMatcher: |
|
|
visitStringMatcher(casted.right, callback) |
|
|
|
|
|
case *literalPrefixInsensitiveStringMatcher: |
|
|
visitStringMatcher(casted.right, callback) |
|
|
|
|
|
case *literalSuffixStringMatcher: |
|
|
visitStringMatcher(casted.left, callback) |
|
|
|
|
|
case orStringMatcher: |
|
|
for _, entry := range casted { |
|
|
visitStringMatcher(entry, callback) |
|
|
} |
|
|
|
|
|
// No nested matchers for the following ones. |
|
|
case *equalMultiStringMapMatcher: |
|
|
for _, prefixes := range casted.prefixes { |
|
|
for _, matcher := range prefixes { |
|
|
visitStringMatcher(matcher, callback) |
|
|
} |
|
|
} |
|
|
|
|
|
case emptyStringMatcher: |
|
|
case *equalStringMatcher: |
|
|
case *equalMultiStringSliceMatcher: |
|
|
case anyStringWithoutNewlineMatcher: |
|
|
case *anyNonEmptyStringMatcher: |
|
|
case trueMatcher: |
|
|
} |
|
|
} |
|
|
|
|
|
func TestToNormalisedLower(t *testing.T) { |
|
|
testCases := map[string]string{ |
|
|
"foo": "foo", |
|
|
"FOO": "foo", |
|
|
"Foo": "foo", |
|
|
"foO": "foo", |
|
|
"fOo": "foo", |
|
|
"AAAAAAAAAAAAAAAAAAAAAAAA": "aaaaaaaaaaaaaaaaaaaaaaaa", |
|
|
"cccccccccccccccccccccccC": "cccccccccccccccccccccccc", |
|
|
"ſſſſſſſſſſſſſſſſſſſſſſſſS": "sssssssssssssssssssssssss", |
|
|
"ſſAſſa": "ssassa", |
|
|
} |
|
|
for input, expectedOutput := range testCases { |
|
|
require.Equal(t, expectedOutput, toNormalisedLower(input)) |
|
|
} |
|
|
}
|
|
|
|
