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|
(.module:
[library
[lux "*"
["_" test {"+" Test}]
[abstract
[monad {"+" do}]]
[control
pipe
["[0]" try]
[parser
["<[0]>" text {"+" Parser}]
["<[0]>" code]]]
[data
["[0]" text ("[1]#[0]" equivalence)
["%" format {"+" format}]]]
["[0]" macro
[syntax {"+" syntax:}]
["[0]" code]]
[math
[number {"+" hex}]
["[0]" random]]]]
[\\library
["[0]" /]])
(def: (should_pass regex input)
(-> (Parser Text) Text Bit)
(|> input
(<text>.result regex)
(case> {try.#Success parsed}
(text#= parsed input)
_
#0)))
(def: (text_should_pass test regex input)
(-> Text (Parser Text) Text Bit)
(|> input
(<text>.result regex)
(case> {try.#Success parsed}
(text#= test parsed)
_
false)))
(def: (should_fail regex input)
(All (_ a) (-> (Parser a) Text Bit))
(|> input
(<text>.result regex)
(case> {try.#Failure _}
true
_
false)))
(syntax: (should_check [pattern <code>.any
regex <code>.any
input <code>.any])
(macro.with_identifiers [g!message g!_]
(in (list (` (|> (~ input)
(<text>.result (~ regex))
(case> (^ {try.#Success (~ pattern)})
true
(~ g!_)
false)))))))
(def: basics
Test
(_.test "Can parse character literals."
(and (should_pass (/.regex "a") "a")
(should_fail (/.regex "a") ".")
(should_pass (/.regex "\.") ".")
(should_fail (/.regex "\.") "a"))))
(def: system_character_classes
Test
($_ _.and
(_.test "Can parse anything."
(should_pass (/.regex ".") "a"))
(_.test "Can parse digits."
(and (should_pass (/.regex "\d") "0")
(should_fail (/.regex "\d") "m")))
(_.test "Can parse non digits."
(and (should_pass (/.regex "\D") "m")
(should_fail (/.regex "\D") "0")))
(_.test "Can parse white-space."
(and (should_pass (/.regex "\s") " ")
(should_fail (/.regex "\s") "m")))
(_.test "Can parse non white-space."
(and (should_pass (/.regex "\S") "m")
(should_fail (/.regex "\S") " ")))
(_.test "Can parse word characters."
(and (should_pass (/.regex "\w") "_")
(should_fail (/.regex "\w") "^")))
(_.test "Can parse non word characters."
(and (should_pass (/.regex "\W") ".")
(should_fail (/.regex "\W") "a")))
))
(def: special_system_character_classes
Test
($_ _.and
(_.test "Lower-case."
(and (should_pass (/.regex "\p{Lower}") "m")
(should_fail (/.regex "\p{Lower}") "M")))
(_.test "Upper-case."
(and (should_pass (/.regex "\p{Upper}") "M")
(should_fail (/.regex "\p{Upper}") "m")))
(_.test "Alphabetic."
(and (should_pass (/.regex "\p{Alpha}") "M")
(should_fail (/.regex "\p{Alpha}") "0")))
(_.test "Numeric digits."
(and (should_pass (/.regex "\p{Digit}") "1")
(should_fail (/.regex "\p{Digit}") "n")))
(_.test "Alphanumeric."
(and (should_pass (/.regex "\p{Alnum}") "1")
(should_fail (/.regex "\p{Alnum}") ".")))
(_.test "Whitespace."
(and (should_pass (/.regex "\p{Space}") " ")
(should_fail (/.regex "\p{Space}") ".")))
(_.test "Hexadecimal."
(and (should_pass (/.regex "\p{HexDigit}") "a")
(should_fail (/.regex "\p{HexDigit}") ".")))
(_.test "Octal."
(and (should_pass (/.regex "\p{OctDigit}") "6")
(should_fail (/.regex "\p{OctDigit}") ".")))
(_.test "Blank."
(and (should_pass (/.regex "\p{Blank}") text.tab)
(should_fail (/.regex "\p{Blank}") ".")))
(_.test "ASCII."
(and (should_pass (/.regex "\p{ASCII}") text.tab)
(should_fail (/.regex "\p{ASCII}") (text.of_char (hex "1234")))))
(_.test "Control characters."
(and (should_pass (/.regex "\p{Contrl}") (text.of_char (hex "12")))
(should_fail (/.regex "\p{Contrl}") "a")))
(_.test "Punctuation."
(and (should_pass (/.regex "\p{Punct}") "@")
(should_fail (/.regex "\p{Punct}") "a")))
(_.test "Graph."
(and (should_pass (/.regex "\p{Graph}") "@")
(should_fail (/.regex "\p{Graph}") " ")))
(_.test "Print."
(and (should_pass (/.regex "\p{Print}") (text.of_char (hex "20")))
(should_fail (/.regex "\p{Print}") (text.of_char (hex "1234")))))
))
(def: custom_character_classes
Test
($_ _.and
(_.test "Can parse using custom character classes."
(and (should_pass (/.regex "[abc]") "a")
(should_fail (/.regex "[abc]") "m")))
(_.test "Can parse using character ranges."
(and (should_pass (/.regex "[a-z]") "a")
(should_pass (/.regex "[a-z]") "m")
(should_pass (/.regex "[a-z]") "z")))
(_.test "Can combine character ranges."
(and (should_pass (/.regex "[a-zA-Z]") "a")
(should_pass (/.regex "[a-zA-Z]") "m")
(should_pass (/.regex "[a-zA-Z]") "z")
(should_pass (/.regex "[a-zA-Z]") "A")
(should_pass (/.regex "[a-zA-Z]") "M")
(should_pass (/.regex "[a-zA-Z]") "Z")))
(_.test "Can negate custom character classes."
(and (should_fail (/.regex "[^abc]") "a")
(should_pass (/.regex "[^abc]") "m")))
(_.test "Can negate character ranges.."
(and (should_fail (/.regex "[^a-z]") "a")
(should_pass (/.regex "[^a-z]") "0")))
(_.test "Can parse negate combinations of character ranges."
(and (should_fail (/.regex "[^a-zA-Z]") "a")
(should_pass (/.regex "[^a-zA-Z]") "0")))
(_.test "Can make custom character classes more specific."
(and (let [RE (/.regex "[a-z&&[def]]")]
(and (should_fail RE "a")
(should_pass RE "d")))
(let [RE (/.regex "[a-z&&[^bc]]")]
(and (should_pass RE "a")
(should_fail RE "b")))
(let [RE (/.regex "[a-z&&[^m-p]]")]
(and (should_pass RE "a")
(should_fail RE "m")
(should_fail RE "p")))))
))
(def: references
Test
(let [number (/.regex "\d+")]
(_.test "Can build complex regexs by combining simpler ones."
(should_check ["809-345-6789" "809" "345" "6789"]
(/.regex "(\@<number>)-(\@<number>)-(\@<number>)")
"809-345-6789"))))
(def: fuzzy_quantifiers
Test
($_ _.and
(_.test "Can sequentially combine patterns."
(text_should_pass "aa" (/.regex "aa") "aa"))
(_.test "Can match patterns optionally."
(and (text_should_pass "a" (/.regex "a?") "a")
(text_should_pass "" (/.regex "a?") "")))
(_.test "Can match a pattern 0 or more times."
(and (text_should_pass "aaa" (/.regex "a*") "aaa")
(text_should_pass "" (/.regex "a*") "")))
(_.test "Can match a pattern 1 or more times."
(and (text_should_pass "aaa" (/.regex "a+") "aaa")
(text_should_pass "a" (/.regex "a+") "a")
(should_fail (/.regex "a+") "")))
))
(def: crisp_quantifiers
Test
($_ _.and
(_.test "Can match a pattern N times."
(and (text_should_pass "aa" (/.regex "a{2}") "aa")
(text_should_pass "a" (/.regex "a{1}") "a")
(should_fail (/.regex "a{3}") "aa")))
(_.test "Can match a pattern at-least N times."
(and (text_should_pass "aa" (/.regex "a{1,}") "aa")
(text_should_pass "aa" (/.regex "a{2,}") "aa")
(should_fail (/.regex "a{3,}") "aa")))
(_.test "Can match a pattern at-most N times."
(and (text_should_pass "aa" (/.regex "a{,2}") "aa")
(text_should_pass "aa" (/.regex "a{,3}") "aa")))
(_.test "Can match a pattern between N and M times."
(and (text_should_pass "a" (/.regex "a{1,2}") "a")
(text_should_pass "aa" (/.regex "a{1,2}") "aa")))
))
(def: groups
Test
($_ _.and
(_.test "Can extract groups of sub-matches specified in a pattern."
(and (should_check ["abc" "b"] (/.regex "a(.)c") "abc")
(should_check ["abbbbbc" "bbbbb"] (/.regex "a(b+)c") "abbbbbc")
(should_check ["809-345-6789" "809" "345" "6789"] (/.regex "(\d{3})-(\d{3})-(\d{4})") "809-345-6789")
(should_check ["809-345-6789" "809" "6789"] (/.regex "(\d{3})-(?:\d{3})-(\d{4})") "809-345-6789")
(should_check ["809-809-6789" "809" "6789"] (/.regex "(\d{3})-\0-(\d{4})") "809-809-6789")
(should_check ["809-809-6789" "809" "6789"] (/.regex "(?<code>\d{3})-\k<code>-(\d{4})") "809-809-6789")
(should_check ["809-809-6789-6789" "809" "6789"] (/.regex "(?<code>\d{3})-\k<code>-(\d{4})-\0") "809-809-6789-6789")))
(_.test "Can specify groups within groups."
(should_check ["809-345-6789" "809" ["345-6789" "345" "6789"]] (/.regex "(\d{3})-((\d{3})-(\d{4}))") "809-345-6789"))
))
(def: alternation
Test
($_ _.and
(_.test "Can specify alternative patterns."
(and (should_check ["a" {0 #0 []}] (/.regex "a|b") "a")
(should_check ["b" {0 #1 []}] (/.regex "a|b") "b")
(should_fail (/.regex "a|b") "c")))
(_.test "Can have groups within alternations."
(and (should_check ["abc" {0 #0 ["b" "c"]}] (/.regex "a(.)(.)|b(.)(.)") "abc")
(should_check ["bcd" {0 #1 ["c" "d"]}] (/.regex "a(.)(.)|b(.)(.)") "bcd")
(should_fail (/.regex "a(.)(.)|b(.)(.)") "cde")
(should_check ["123-456-7890" {0 #0 ["123" "456-7890" "456" "7890"]}]
(/.regex "(\d{3})-((\d{3})-(\d{4}))|b(.)d")
"123-456-7890")))
))
(syntax: (expands? [form <code>.any])
(function (_ lux)
{try.#Success [lux (list (code.bit (case (macro.single_expansion form lux)
{try.#Success _}
true
{try.#Failure error}
false)))]}))
(def: .public test
Test
(<| (_.covering /._)
($_ _.and
(_.for [/.regex]
($_ _.and
..basics
..system_character_classes
..special_system_character_classes
..custom_character_classes
..references
..fuzzy_quantifiers
..crisp_quantifiers
..groups
..alternation
))
(do random.monad
[sample1 (random.unicode 3)
sample2 (random.unicode 3)
sample3 (random.unicode 4)]
(_.cover [/.^regex]
(case (format sample1 "-" sample2 "-" sample3)
(/.^regex "(.{3})-(.{3})-(.{4})"
[_ match1 match2 match3])
(and (text#= sample1 match1)
(text#= sample2 match2)
(text#= sample3 match3))
_
false)))
(_.cover [/.incorrect_quantification]
(and (expands? (/.regex "a{1,2}"))
(not (expands? (/.regex "a{2,1}")))))
)))
|
