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lewis.moe
1/*
2 * CONTENT WARNING
3 *
4 * This file contains explicit slurs and hateful language. We're sorry you have to see them.
5 *
6 * These words exist here for one reason: to ensure our moderation system correctly blocks them.
7 * We can't verify the filter catches the n-word without testing against the actual word.
8 * Euphemisms wouldn't prove the protection works.
9 *
10 * If reading this file has caused you distress, please know:
11 * - you are valued and welcome in this community
12 * - these words do not reflect the views of this project or its contributors
13 * - we maintain this code precisely because we believe everyone deserves an experience on the web that is free from this kinda language
14*/
15
16use regex::Regex;
17use std::sync::OnceLock;
18
19static SLUR_REGEXES: OnceLock<Vec<Regex>> = OnceLock::new();
20static EXTRA_BANNED_WORDS: OnceLock<Vec<String>> = OnceLock::new();
21
22fn get_slur_regexes() -> &'static Vec<Regex> {
23 SLUR_REGEXES.get_or_init(|| {
24 vec![
25 Regex::new(r"\b[cĆćĈĉČčĊċÇçḈḉȻȼꞒꞓꟄꞔƇƈɕ][hĤĥȞȟḦḧḢḣḨḩḤḥḪḫH̱ẖĦħⱧⱨꞪɦꞕΗНн][iÍíi̇́Ììi̇̀ĬĭÎîǏǐÏïḮḯĨĩi̇̃ĮįĮ́į̇́Į̃į̇̃ĪīĪ̀ī̀ỈỉȈȉI̋i̋ȊȋỊịꞼꞽḬḭƗɨᶖİiIıＩｉ1lĺľļḷḹl̃ḽḻłŀƚꝉⱡɫɬꞎꬷꬸꬹᶅɭȴＬｌ][nŃńǸǹŇňÑñṄṅŅņṆṇṊṋṈṉN̈n̈ƝɲŊŋꞐꞑꞤꞥᵰᶇɳȵꬻꬼИиПпＮｎ][kḰḱǨǩĶķḲḳḴḵƘƙⱩⱪᶄꝀꝁꝂꝃꝄꝅꞢꞣ][sŚśṤṥŜŝŠšṦṧṠṡŞşṢṣṨṩȘșS̩s̩ꞨꞩⱾȿꟅʂᶊᵴ]?\b").unwrap(),
26 Regex::new(r"\b[cĆćĈĉČčĊċÇçḈḉȻȼꞒꞓꟄꞔƇƈɕ][ÓóÒòŎŏÔôỐốỒồỖỗỔổǑǒÖöȪȫŐőÕõṌṍṎṏȬȭȮȯO͘o͘ȰȱØøǾǿǪǫǬǭŌōṒṓṐṑỎỏȌȍȎȏƠơỚớỜờỠỡỞởỢợỌọỘộO̩o̩Ò̩ò̩Ó̩ó̩ƟɵꝊꝋꝌꝍⱺＯｏ0]{2}[nŃńǸǹŇňÑñṄṅŅņṆṇṊṋṈṉN̈n̈ƝɲŊŋꞐꞑꞤꞥᵰᶇɳȵꬻꬼИиПпＮｎ][sŚśṤṥŜŝŠšṦṧṠṡŞşṢṣṨṩȘșS̩s̩ꞨꞩⱾȿꟅʂᶊᵴ]?\b").unwrap(),
27 Regex::new(r"\b[fḞḟƑƒꞘꞙᵮᶂ][aÁáÀàĂăẮắẰằẴẵẲẳÂâẤấẦầẪẫẨẩǍǎÅåǺǻÄäǞǟÃãȦȧǠǡĄąĄ́ą́Ą̃ą̃ĀāĀ̀ā̀ẢảȀȁA̋a̋ȂȃẠạẶặẬậḀḁȺⱥꞺꞻᶏẚＡａ@4][gǴǵĞğĜĝǦǧĠġG̃g̃ĢģḠḡǤǥꞠꞡƓɠᶃꬶＧｇ]{1,2}([ÓóÒòŎŏÔôỐốỒồỖỗỔổǑǒÖöȪȫŐőÕõṌṍṎṏȬȭȮȯO͘o͘ȰȱØøǾǿǪǫǬǭŌōṒṓṐṑỎỏȌȍȎȏƠơỚớỜờỠỡỞởỢợỌọỘộO̩o̩Ò̩ò̩Ó̩ó̩ƟɵꝊꝋꝌꝍⱺＯｏ0e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅiÍíi̇́Ììi̇̀ĬĭÎîǏǐÏïḮḯĨĩi̇̃ĮįĮ́į̇́Į̃į̇̃ĪīĪ̀ī̀ỈỉȈȉI̋i̋ȊȋỊịꞼꞽḬḭƗɨᶖİiIıＩｉ1lĺľļḷḹl̃ḽḻłŀƚꝉⱡɫɬꞎꬷꬸꬹᶅɭȴＬｌ][tŤťṪṫŢţṬṭȚțṰṱṮṯŦŧȾⱦƬƭƮʈT̈ẗᵵƫȶ]{1,2}([rŔŕŘřṘṙŖŗȐȑȒȓṚṛṜṝṞṟR̃r̃ɌɍꞦꞧⱤɽᵲᶉꭉ][yÝýỲỳŶŷY̊ẙŸÿỸỹẎẏȲȳỶỷỴỵɎɏƳƴỾỿ]|[rŔŕŘřṘṙŖŗȐȑȒȓṚṛṜṝṞṟR̃r̃ɌɍꞦꞧⱤɽᵲᶉꭉ][iÍíi̇́Ììi̇̀ĬĭÎîǏǐÏïḮḯĨĩi̇̃ĮįĮ́į̇́Į̃į̇̃ĪīĪ̀ī̀ỈỉȈȉI̋i̋ȊȋỊịꞼꞽḬḭƗɨᶖİiIıＩｉ1lĺľļḷḹl̃ḽḻłŀƚꝉⱡɫɬꞎꬷꬸꬹᶅɭȴＬｌ][e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅ])?)?[sŚśṤṥŜŝŠšṦṧṠṡŞşṢṣṨṩȘșS̩s̩ꞨꞩⱾȿꟅʂᶊᵴ]?\b").unwrap(),
28 Regex::new(r"\b[kḰḱǨǩĶķḲḳḴḵƘƙⱩⱪᶄꝀꝁꝂꝃꝄꝅꞢꞣ][iÍíi̇́Ììi̇̀ĬĭÎîǏǐÏïḮḯĨĩi̇̃ĮįĮ́į̇́Į̃į̇̃ĪīĪ̀ī̀ỈỉȈȉI̋i̋ȊȋỊịꞼꞽḬḭƗɨᶖİiIıＩｉ1lĺľļḷḹl̃ḽḻłŀƚꝉⱡɫɬꞎꬷꬸꬹᶅɭȴＬｌyÝýỲỳŶŷY̊ẙŸÿỸỹẎẏȲȳỶỷỴỵɎɏƳƴỾỿ][kḰḱǨǩĶķḲḳḴḵƘƙⱩⱪᶄꝀꝁꝂꝃꝄꝅꞢꞣ][e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅ]([rŔŕŘřṘṙŖŗȐȑȒȓṚṛṜṝṞṟR̃r̃ɌɍꞦꞧⱤɽᵲᶉꭉ][yÝýỲỳŶŷY̊ẙŸÿỸỹẎẏȲȳỶỷỴỵɎɏƳƴỾỿ]|[rŔŕŘřṘṙŖŗȐȑȒȓṚṛṜṝṞṟR̃r̃ɌɍꞦꞧⱤɽᵲᶉꭉ][iÍíi̇́Ììi̇̀ĬĭÎîǏǐÏïḮḯĨĩi̇̃ĮįĮ́į̇́Į̃į̇̃ĪīĪ̀ī̀ỈỉȈȉI̋i̋ȊȋỊịꞼꞽḬḭƗɨᶖİiIıＩｉ1lĺľļḷḹl̃ḽḻłŀƚꝉⱡɫɬꞎꬷꬸꬹᶅɭȴＬｌ][e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅ])?[sŚśṤṥŜŝŠšṦṧṠṡŞşṢṣṨṩȘșS̩s̩ꞨꞩⱾȿꟅʂᶊᵴ]*\b").unwrap(),
29 Regex::new(r"\b[nŃńǸǹŇňÑñṄṅŅņṆṇṊṋṈṉN̈n̈ƝɲŊŋꞐꞑꞤꞥᵰᶇɳȵꬻꬼИиПпＮｎ][iÍíi̇́Ììi̇̀ĬĭÎîǏǐÏïḮḯĨĩi̇̃ĮįĮ́į̇́Į̃į̇̃ĪīĪ̀ī̀ỈỉȈȉI̋i̋ȊȋỊịꞼꞽḬḭƗɨᶖİiIıＩｉ1lĺľļḷḹl̃ḽḻłŀƚꝉⱡɫɬꞎꬷꬸꬹᶅɭȴＬｌoÓóÒòŎŏÔôỐốỒồỖỗỔổǑǒÖöȪȫŐőÕõṌṍṎṏȬȭȮȯO͘o͘ȰȱØøǾǿǪǫǬǭŌōṒṓṐṑỎỏȌȍȎȏƠơỚớỜờỠỡỞởỢợỌọỘộO̩o̩Ò̩ò̩Ó̩ó̩ƟɵꝊꝋꝌꝍⱺＯｏІіa4ÁáÀàĂăẮắẰằẴẵẲẳÂâẤấẦầẪẫẨẩǍǎÅåǺǻÄäǞǟÃãȦȧǠǡĄąĄ́ą́Ą̃ą̃ĀāĀ̀ā̀ẢảȀȁA̋a̋ȂȃẠạẶặẬậḀḁȺⱥꞺꞻᶏẚＡａ][gǴǵĞğĜĝǦǧĠġG̃g̃ĢģḠḡǤǥꞠꞡƓɠᶃꬶＧｇqꝖꝗꝘꝙɋʠ]{2}(l[e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅ]t|[e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅaÁáÀàĂăẮắẰằẴẵẲẳÂâẤấẦầẪẫẨẩǍǎÅåǺǻÄäǞǟÃãȦȧǠǡĄąĄ́ą́Ą̃ą̃ĀāĀ̀ā̀ẢảȀȁA̋a̋ȂȃẠạẶặẬậḀḁȺⱥꞺꞻᶏẚＡａ][rŔŕŘřṘṙŖŗȐȑȒȓṚṛṜṝṞṟR̃r̃ɌɍꞦꞧⱤɽᵲᶉꭉ]?|n[ÓóÒòŎŏÔôỐốỒồỖỗỔổǑǒÖöȪȫŐőÕõṌṍṎṏȬȭȮȯO͘o͘ȰȱØøǾǿǪǫǬǭŌōṒṓṐṑỎỏȌȍȎȏƠơỚớỜờỠỡỞởỢợỌọỘộO̩o̩Ò̩ò̩Ó̩ó̩ƟɵꝊꝋꝌꝍⱺＯｏ0][gǴǵĞğĜĝǦǧĠġG̃g̃ĢģḠḡǤǥꞠꞡƓɠᶃꬶＧｇqꝖꝗꝘꝙɋʠ]|[a4ÁáÀàĂăẮắẰằẴẵẲẳÂâẤấẦầẪẫẨẩǍǎÅåǺǻÄäǞǟÃãȦȧǠǡĄąĄ́ą́Ą̃ą̃ĀāĀ̀ā̀ẢảȀȁA̋a̋ȂȃẠạẶặẬậḀḁȺⱥꞺꞻᶏẚＡａ]?)?[sŚśṤṥŜŝŠšṦṧṠṡŞşṢṣṨṩȘșS̩s̩ꞨꞩⱾȿꟅʂᶊᵴ]?\b").unwrap(),
30 Regex::new(r"[nŃńǸǹŇňÑñṄṅŅņṆṇṊṋṈṉN̈n̈ƝɲŊŋꞐꞑꞤꞥᵰᶇɳȵꬻꬼИиПпＮｎ][iÍíi̇́Ììi̇̀ĬĭÎîǏǐÏïḮḯĨĩi̇̃ĮįĮ́į̇́Į̃į̇̃ĪīĪ̀ī̀ỈỉȈȉI̋i̋ȊȋỊịꞼꞽḬḭƗɨᶖİiIıＩｉ1lĺľļḷḹl̃ḽḻłŀƚꝉⱡɫɬꞎꬷꬸꬹᶅɭȴＬｌoÓóÒòŎŏÔôỐốỒồỖỗỔổǑǒÖöȪȫŐőÕõṌṍṎṏȬȭȮȯO͘o͘ȰȱØøǾǿǪǫǬǭŌōṒṓṐṑỎỏȌȍȎȏƠơỚớỜờỠỡỞởỢợỌọỘộO̩o̩Ò̩ò̩Ó̩ó̩ƟɵꝊꝋꝌꝍⱺＯｏІіa4ÁáÀàĂăẮắẰằẴẵẲẳÂâẤấẦầẪẫẨẩǍǎÅåǺǻÄäǞǟÃãȦȧǠǡĄąĄ́ą́Ą̃ą̃ĀāĀ̀ā̀ẢảȀȁA̋a̋ȂȃẠạẶặẬậḀḁȺⱥꞺꞻᶏẚＡａ][gǴǵĞğĜĝǦǧĠġG̃g̃ĢģḠḡǤǥꞠꞡƓɠᶃꬶＧｇqꝖꝗꝘꝙɋʠ]{2}(l[e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅ]t|[e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅ][rŔŕŘřṘṙŖŗȐȑȒȓṚṛṜṝṞṟR̃r̃ɌɍꞦꞧⱤɽᵲᶉꭉ])[sŚśṤṥŜŝŠšṦṧṠṡŞşṢṣṨṩȘșS̩s̩ꞨꞩⱾȿꟅʂᶊᵴ]?").unwrap(),
31 Regex::new(r"\b[tŤťṪṫŢţṬṭȚțṰṱṮṯŦŧȾⱦƬƭƮʈT̈ẗᵵƫȶ][rŔŕŘřṘṙŖŗȐȑȒȓṚṛṜṝṞṟR̃r̃ɌɍꞦꞧⱤɽᵲᶉꭉ][aÁáÀàĂăẮắẰằẴẵẲẳÂâẤấẦầẪẫẨẩǍǎÅåǺǻÄäǞǟÃãȦȧǠǡĄąĄ́ą́Ą̃ą̃ĀāĀ̀ā̀ẢảȀȁA̋a̋ȂȃẠạẶặẬậḀḁȺⱥꞺꞻᶏẚＡａ4]+[nŃńǸǹŇňÑñṄṅŅņṆṇṊṋṈṉN̈n̈ƝɲŊŋꞐꞑꞤꞥᵰᶇɳȵꬻꬼИиПпＮｎ]{1,2}([iÍíi̇́Ììi̇̀ĬĭÎîǏǐÏïḮḯĨĩi̇̃ĮįĮ́į̇́Į̃į̇̃ĪīĪ̀ī̀ỈỉȈȉI̋i̋ȊȋỊịꞼꞽḬḭƗɨᶖİiIıＩｉ1lĺľļḷḹl̃ḽḻłŀƚꝉⱡɫɬꞎꬷꬸꬹᶅɭȴＬｌ][e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅ]|[yÝýỲỳŶŷY̊ẙŸÿỸỹẎẏȲȳỶỷỴỵɎɏƳƴỾỿ]|[e3ЄєЕеÉéÈèĔĕÊêẾếỀềỄễỂểÊ̄ê̄Ê̌ê̌ĚěËëẼẽĖėĖ́ė́Ė̃ė̃ȨȩḜḝĘęĘ́ę́Ę̃ę̃ĒēḖḗḔḕẺẻȄȅE̋e̋ȆȇẸẹỆệḘḙḚḛɆɇE̩e̩È̩è̩É̩é̩ᶒⱸꬴꬳＥｅ][rŔŕŘřṘṙŖŗȐȑȒȓṚṛṜṝṞṟR̃r̃ɌɍꞦꞧⱤɽᵲᶉꭉ])[sŚśṤṥŜŝŠšṦṧṠṡŞşṢṣṨṩȘșS̩s̩ꞨꞩⱾȿꟅʂᶊᵴ]?\b").unwrap(),
32 ]
33 })
34}
35
36fn get_extra_banned_words() -> &'static Vec<String> {
37 EXTRA_BANNED_WORDS.get_or_init(|| {
38 std::env::var("PDS_BANNED_WORDS")
39 .unwrap_or_default()
40 .split(',')
41 .map(|s| s.trim().to_lowercase())
42 .filter(|s| !s.is_empty())
43 .collect()
44 })
45}
46
47fn strip_trailing_digits(s: &str) -> &str {
48 s.trim_end_matches(|c: char| c.is_ascii_digit())
49}
50
51fn normalize_leetspeak(s: &str) -> String {
52 s.chars()
53 .map(|c| match c {
54 '4' | '@' => 'a',
55 '3' => 'e',
56 '1' | '!' | '|' => 'i',
57 '0' => 'o',
58 '5' | '$' => 's',
59 '7' => 't',
60 '8' => 'b',
61 '9' => 'g',
62 _ => c,
63 })
64 .collect()
65}
66
67pub fn has_explicit_slur(text: &str) -> bool {
68 has_explicit_slur_with_extra_words(text, get_extra_banned_words())
69}
70
71fn has_explicit_slur_with_extra_words(text: &str, extra_words: &[String]) -> bool {
72 let text_lower = text.to_lowercase();
73 let normalized = text_lower.replace('.', "").replace('-', "").replace('_', "");
74 let stripped = strip_trailing_digits(&text_lower);
75 let normalized_stripped = strip_trailing_digits(&normalized);
76
77 let regexes = get_slur_regexes();
78 if regexes.iter().any(|r| {
79 r.is_match(&text_lower)
80 || r.is_match(&normalized)
81 || r.is_match(stripped)
82 || r.is_match(normalized_stripped)
83 }) {
84 return true;
85 }
86
87 if !extra_words.is_empty() {
88 let leet_normalized = normalize_leetspeak(&normalized);
89 let leet_stripped = normalize_leetspeak(strip_trailing_digits(&leet_normalized));
90 if extra_words.iter().any(|w| {
91 text_lower.contains(w)
92 || normalized.contains(w)
93 || stripped.contains(w)
94 || normalized_stripped.contains(w)
95 || leet_normalized.contains(w)
96 || leet_stripped.contains(w)
97 }) {
98 return true;
99 }
100 }
101 false
102}
103
104#[cfg(test)]
105mod tests {
106 use super::*;
107
108 #[test]
109 fn test_chink_pattern() {
110 assert!(has_explicit_slur("chink"));
111 assert!(has_explicit_slur("chinks"));
112 assert!(has_explicit_slur("CHINK"));
113 assert!(has_explicit_slur("Chinks"));
114 }
115
116 #[test]
117 fn test_coon_pattern() {
118 assert!(has_explicit_slur("coon"));
119 assert!(has_explicit_slur("coons"));
120 assert!(has_explicit_slur("COON"));
121 }
122
123 #[test]
124 fn test_fag_pattern() {
125 assert!(has_explicit_slur("fag"));
126 assert!(has_explicit_slur("fags"));
127 assert!(has_explicit_slur("faggot"));
128 assert!(has_explicit_slur("faggots"));
129 assert!(has_explicit_slur("faggotry"));
130 }
131
132 #[test]
133 fn test_kike_pattern() {
134 assert!(has_explicit_slur("kike"));
135 assert!(has_explicit_slur("kikes"));
136 assert!(has_explicit_slur("KIKE"));
137 assert!(has_explicit_slur("kikery"));
138 }
139
140 #[test]
141 fn test_nigger_pattern() {
142 assert!(has_explicit_slur("nigger"));
143 assert!(has_explicit_slur("niggers"));
144 assert!(has_explicit_slur("NIGGER"));
145 assert!(has_explicit_slur("nigga"));
146 assert!(has_explicit_slur("niggas"));
147 }
148
149 #[test]
150 fn test_tranny_pattern() {
151 assert!(has_explicit_slur("tranny"));
152 assert!(has_explicit_slur("trannies"));
153 assert!(has_explicit_slur("TRANNY"));
154 }
155
156 #[test]
157 fn test_normalization_bypass() {
158 assert!(has_explicit_slur("n.i.g.g.e.r"));
159 assert!(has_explicit_slur("n-i-g-g-e-r"));
160 assert!(has_explicit_slur("n_i_g_g_e_r"));
161 assert!(has_explicit_slur("f.a.g"));
162 assert!(has_explicit_slur("f-a-g"));
163 assert!(has_explicit_slur("c.h.i.n.k"));
164 assert!(has_explicit_slur("k_i_k_e"));
165 }
166
167 #[test]
168 fn test_trailing_digits_bypass() {
169 assert!(has_explicit_slur("faggot123"));
170 assert!(has_explicit_slur("nigger69"));
171 assert!(has_explicit_slur("chink420"));
172 assert!(has_explicit_slur("fag1"));
173 assert!(has_explicit_slur("kike2024"));
174 assert!(has_explicit_slur("n_i_g_g_e_r123"));
175 }
176
177 #[test]
178 fn test_embedded_in_sentence() {
179 assert!(has_explicit_slur("you are a faggot"));
180 assert!(has_explicit_slur("stupid nigger"));
181 assert!(has_explicit_slur("go away chink"));
182 }
183
184 #[test]
185 fn test_safe_words_not_matched() {
186 assert!(!has_explicit_slur("hello"));
187 assert!(!has_explicit_slur("world"));
188 assert!(!has_explicit_slur("bluesky"));
189 assert!(!has_explicit_slur("tranquil"));
190 assert!(!has_explicit_slur("programmer"));
191 assert!(!has_explicit_slur("trigger"));
192 assert!(!has_explicit_slur("bigger"));
193 assert!(!has_explicit_slur("digger"));
194 assert!(!has_explicit_slur("figure"));
195 assert!(!has_explicit_slur("configure"));
196 }
197
198 #[test]
199 fn test_similar_but_safe_words() {
200 assert!(!has_explicit_slur("niggardly"));
201 assert!(!has_explicit_slur("raccoon"));
202 }
203
204 #[test]
205 fn test_empty_and_whitespace() {
206 assert!(!has_explicit_slur(""));
207 assert!(!has_explicit_slur(" "));
208 assert!(!has_explicit_slur("\t\n"));
209 }
210
211 #[test]
212 fn test_case_insensitive() {
213 assert!(has_explicit_slur("NIGGER"));
214 assert!(has_explicit_slur("Nigger"));
215 assert!(has_explicit_slur("NiGgEr"));
216 assert!(has_explicit_slur("FAGGOT"));
217 assert!(has_explicit_slur("Faggot"));
218 }
219
220 #[test]
221 fn test_leetspeak_bypass() {
222 assert!(has_explicit_slur("f4ggot"));
223 assert!(has_explicit_slur("f4gg0t"));
224 assert!(has_explicit_slur("n1gger"));
225 assert!(has_explicit_slur("n1gg3r"));
226 assert!(has_explicit_slur("k1ke"));
227 assert!(has_explicit_slur("ch1nk"));
228 assert!(has_explicit_slur("tr4nny"));
229 }
230
231 #[test]
232 fn test_normalize_leetspeak() {
233 assert_eq!(normalize_leetspeak("h3llo"), "hello");
234 assert_eq!(normalize_leetspeak("w0rld"), "world");
235 assert_eq!(normalize_leetspeak("t3$t"), "test");
236 assert_eq!(normalize_leetspeak("b4dw0rd"), "badword");
237 assert_eq!(normalize_leetspeak("l33t5p34k"), "leetspeak");
238 assert_eq!(normalize_leetspeak("@ss"), "ass");
239 assert_eq!(normalize_leetspeak("sh!t"), "shit");
240 assert_eq!(normalize_leetspeak("normal"), "normal");
241 }
242
243 #[test]
244 fn test_extra_banned_words() {
245 let extra = vec!["badword".to_string(), "offensive".to_string()];
246
247 assert!(has_explicit_slur_with_extra_words("badword", &extra));
248 assert!(has_explicit_slur_with_extra_words("BADWORD", &extra));
249 assert!(has_explicit_slur_with_extra_words("b.a.d.w.o.r.d", &extra));
250 assert!(has_explicit_slur_with_extra_words("b-a-d-w-o-r-d", &extra));
251 assert!(has_explicit_slur_with_extra_words("b_a_d_w_o_r_d", &extra));
252 assert!(has_explicit_slur_with_extra_words("badword123", &extra));
253 assert!(has_explicit_slur_with_extra_words("b4dw0rd", &extra));
254 assert!(has_explicit_slur_with_extra_words("b4dw0rd789", &extra));
255 assert!(has_explicit_slur_with_extra_words("b.4.d.w.0.r.d", &extra));
256 assert!(has_explicit_slur_with_extra_words("this contains badword here", &extra));
257 assert!(has_explicit_slur_with_extra_words("0ff3n$1v3", &extra));
258
259 assert!(!has_explicit_slur_with_extra_words("goodword", &extra));
260 assert!(!has_explicit_slur_with_extra_words("hello world", &extra));
261 }
262}