!! Version 2
# MediaWiki 'Regex Fun' extension Parser test cases
# @Author: Daniel Werner < danweetz@web.de >
# @since 1.1

!! functionhooks
regex
!! endfunctionhooks

# Templates for tests:
# since template:! is needed by other tests, but creating it twice will fail but not having it at all when
# running these tests only fill fail as well, we use the 'parsertest.regexfun' prefix to avoid duplicates.

!! article
Template:parsertest.regexfun:!
!!text
|
!! endarticle

!! article
Template:parsertest.regexfun:((
!!text
{{
!! endarticle

!! article
Template:parsertest.regexfun:))
!!text
}}
!! endarticle

##
## #regex
##

!! test
Simple regular expression #regex
!! wikitext
"{{#regex:abc 20,30,40 | /\d+/ }}"
!! html
<p>"20"
</p>
!! end


!! test
Simple replacement with #regex
!! wikitext
"{{#regex:abc 20,30,40 | %\d% | # }}"
!! html
<p>"abc ##,##,##"
</p>
!! end


!! test
Replace something with empty string
!! wikitext
"{{#regex:abc 20,30,40 | %\d% | }}"
!! html
<p>"abc ,,"
</p>
!! end


!! test
Nothing to replace
!! wikitext
"{{#regex:abc 20,30,40 | !foo! | xx }}"
!! html
<p>"abc 20,30,40"
</p>
!! end


!! test
'i' flag test
!! wikitext
"{{#regex:TeSt | /test/i }}"
!! html
<p>"TeSt"
</p>
!! end


!! test
Safety test, script tag injection
!! wikitext
"{{#regex:<script>alert("foo")</script>| /.+/ }}"
!! html
<p>"&lt;script&gt;alert("foo")&lt;/script&gt;"
</p>
!! end


!! test
Special chars
!! wikitext
"{{#regex: foo{{parsertest.regexfun:!}}oo | /(o.o)/ | $1 }}", "{{#regex_var: $1 }}"
!! html
<p>"foo|oo", "o|o"
</p>
!! end


##
## 'r' flag test
##

!! test
#regex test with 'r' flag where it should have no effect
!! wikitext
"{{#regex:abc 20,30,40 | /\d+/r }}"
!! html
<p>"20"
</p>
!! end


!! test
#regex with 'r' flag but no match should result into empty string instead of initial string in argument 1
!! wikitext
"{{#regex:abc 20,30,40 | &foo&r | xx }}"
!! html
<p>""
</p>
!! end


##
## 'e' flag test
##

!! test
Safety test 'e' flag. This should always be filtered for not running into its php meaning!
!! wikitext
"{{#regex: text | /^.+

$/xe
 | $GLOBALS['wgDBuser'] }}"
!! html
<p>"$GLOBALS['wgDBuser']"
</p>
!! end



!! article
Template:parsertest.regexfun:11
!!text
ELEVEN{{{1|}}}
!! endarticle

!! article
Template:parsertest.regexfun:12
!!text
TWELVE
!! endarticle

!! test
'e' modifier and new feature in 1.1, transform parameter doesn't have to be escaped
!! wikitext
"{{
#regex: 11 and 12
| /\d+/ier
| {{parsertest.regexfun:$0|$0|<!--pipes should have no effect here-->|}}\$0
}}"
!! html
<p>"ELEVEN11$0 and TWELVE$0"
</p>
!! end


!! test
'e' does not work to abuse #regex for parsing its input. Only replacement parameter's wikitext will be parsed, not the text within the backrefs.
!! wikitext
"{{
#regex: {{parsertest.regexfun:((}}parsertest.regexfun:11{{parsertest.regexfun:!}}_foo{{parsertest.regexfun:))}}
| /$.+^/e
| $0
}}"
!! html
<p>"{{parsertest.regexfun:11|_foo}}"
</p>
!! end



##
## #regex_var
##

!! test
#regex_var after #regex with replacement
!! wikitext
"{{
#regex:Numbers: 1, 2, 3, 4
| /^\s*.+:\s*(\d+)\s*\,\s*(\d+)\s*\,\s*(\d+),\s*(\d+)\s*$/r
|
}}{{
#regex_var:1}},{{
#regex_var:2|foo}},{{
#regex_var:3|foo}},{{
#regex_var:4|foo}},{{
#regex_var:5}}"
!! html
<p>"1,2,3,4,"
</p>
!! end


!! test
Test without replacement in '#regex' before
!! wikitext
"{{
#regex: text
| /(.+)/
}}_{{
#regex_var:0}}_{{
#regex_var:1}}"
!! html
<p>"text_text_text"
</p>
!! end


!! test
#regex_var after #regex with 'e' flag
!! wikitext
"{{
#regex:Numbers: 10, 20, 30
| /^\s*.+:\s*(\d+)\s*\,\s*(\d+)\s*\,\s*(\d+)\s*$/e
|
}}{{
#regex_var:1}},{{
#regex_var:2|foo}},{{
#regex_var:3|foo}},{{
#regex_var:4|foo}},{{
#regex_var:5}}"
!! html
<p>"10,20,30,foo,"
</p>
!! end


!! test
#regex_var again
!! wikitext
"{{
#regex:Numbers: 10, 20, 30
| /^\s*.+:\s*(\d+)\s*\,\s*(\d+)\s*\,\s*(\d+)\s*$/e
|
}}{{#regex_var:$1 + $2 = $3, right?}}"
!! html
<p>"10 + 20 = 30, right?"
</p>
!! end


!! test
#regex_var with old-style backrefs
!! wikitext
"{{
#regex:Numbers: 10, 20, 30
| /^\s*.+:\s*(\d+)\s*\,\s*(\d+)\s*\,\s*(\d+)\s*$/e
|
}}{{#regex_var:\1 + \2 = \3, right?}}"
!! html
<p>"10 + 20 = 30, right?"
</p>
!! end


!! test
#regex_var with $0
!! wikitext
"{{
#regex:Numbers: 10, 20, 30
| /^\s*.+:\s*(\d+)\s*\,\s*(\d+)\s*\,\s*(\d+)\s*$/e
|
}}{{#regex_var:'$0' or '\0'?}}"
!! html
<p>"'Numbers: 10, 20, 30' or 'Numbers: 10, 20, 30'?"
</p>
!! end


!! test
#regex_var after invalid regex. Without/with default value.
!! wikitext
"{{
#regex:Numbers: 10, 20, 30
| /^\s*.+:\s*(\d+)\s*\,\s*(\d+)\s*\,\s*(\d+)\s*$/e
|
}}{{#if:{{#regex:}}}}{{
#regex_var:$0}}{{
#regex_var:_$0_}}", "{{#regex_var:$0|dflt1}}{{
#regex_var:_$0_|dflt2}}"
!! html
<p>"", "dflt1dflt2"
</p>
!! end


!! article
Template:parsertest.regexfun:regex_var-scope
!!text
{{#regex: {{{1}}} | {{{2}}} }}
!! endarticle

!! test
Test of var scope, using a regex, then template call with regex inside, then 'regex_var' to get first regex value. Works in 1.1+
!! wikitext
"{{#regex: 123 | /(.+)/ }}",
"{{parsertest.regexfun:regex_var-scope | ABC | /(.+)/ }}",
"{{#regex_var:$1}}"
!! html
<p>"123",
"ABC",
"123"
</p>
!! end


##
## #regexall
##

!! test
#regexall
!! wikitext
"{{#regexall:100,200,300 | /\d+/ }}"
!! html
<p>"100, 200, 300"
</p>
!! end


!! test
#regexall, sep '#', offset '1'
!! wikitext
"{{#regexall: 00,11,22,33 | /\d+/ | # | 1 }}"
!! html
<p>"11#22#33"
</p>
!! end


!! test
#regexall, sep empty, offset '1', limit '2'
!! wikitext
"{{#regexall: 00,11,22,33 | /\d+/ | | 1 | 2 }}"
!! html
<p>"1122"
</p>
!! end


##
## #regexquote
##

!! test
Input text escaped with #regexquote for use within regex, delimiter / by default
!! wikitext
"{{#regexquote: \#;239"%&§$,:.?// }}"
!! html
<p>"\\#;239"%&amp;§\$,\:\.\?\/\/"
</p>
!! end


!! test
#regexquote parameter 2 test, delimiter '&'
!! wikitext
"{{#regexquote: \#;239"%&§$,:.?// | & }}"
!! html
<p>"\\#;239"%\&amp;§\$,\:\.\?//"
</p>
!! end


!! test
#regexquote, wiki list character '#' as first one
!! wikitext
"{{#regexquote: #text }}"
!! html
<p>"\x23text"
</p>
!! end


!! test
#regexquote, wiki list character ';' as first one
!! wikitext
"{{#regexquote: ;text }}"
!! html
<p>"\x3btext"
</p>
!! end


##
## provoked errors, test with ParserFunction's #iferror
##

!! functionhooks
iferror
!! endfunctionhooks

!! test
#regex with #iferror, no delimiter
!! wikitext
"{{#iferror: {{#regex:abc 20,30,40 }} | error | no-error }}"
!! html
<p>"error"
</p>
!! end


!! test
#regex with #iferror, invalid delimiter
!! wikitext
"{{#iferror: {{#regex:abc 20,30,40 | \d+ }} | error | no-error }}"
!! html
<p>"error"
</p>
!! end


##
## together with 'arrays' extension
##

!! functionhooks
arrayprint
len
!! endfunctionhooks

!! test
Using Arrays, using 'Regex Fun' externally, checking whether '#regex_var' will still work as expected.
!! wikitext
"{{
#regex: abcd | /.+/ }}", "{{
#arraydefine: b | 55555, 333, 4444, 1, 22, 999999999, 88888888, 4444 }}{{
#arraysearcharray: b | b | /\d+/e | 0 | -1 | {{#len:$0}} }}{{
#arrayprint: b }}", "{{
#arrayindex: b | 0 }}", "{{
#regex_var: $0 }}"
!! html
<p>"abcd", "5, 3, 4, 1, 2, 9, 8, 4", "5", "abcd"
</p>
!! end


!! test
Same as previous but with replace in '#regex'
!! wikitext
"{{
#regex: abcd | /(.+)/e | {{#len:$0}} }}", "{{
#arraydefine: b | 55555, 333, 4444, 1, 22, 999999999, 88888888, 4444 }}{{
#arraysearcharray: b | b | /\d+/e | 0 | -1 | {{#len:$0}} }}{{
#arrayprint: b }}", "{{
#arrayindex: b | 0 }}", "{{
#regex_var: $0+$1 }}"
!! html
<p>"4", "5, 3, 4, 1, 2, 9, 8, 4", "5", "abcd+abcd"
</p>
!! end