USING: tools.test unicode.breaks sequences math kernel splitting
unicode.categories io.pathnames io.encodings.utf8 io.files
strings quotations math.parser ;
IN: unicode.breaks.tests

[ "\u001112\u001161\u0011abA\u000300a\r\r\n" ]
[ "\r\n\raA\u000300\u001112\u001161\u0011ab" string-reverse ] unit-test
[ "dcba" ] [ "abcd" string-reverse ] unit-test
[ 3 ] [ "\u001112\u001161\u0011abA\u000300a"
        dup last-grapheme head last-grapheme ] unit-test

: grapheme-break-test ( -- filename )
    "basis/unicode/breaks/GraphemeBreakTest.txt"
    resource-path ;

: parse-test-file ( -- tests )
    grapheme-break-test utf8 file-lines
    [ "#" split1 drop ] map harvest [
        "÷" split
        [ "×" split [ [ blank? ] trim hex> ] map harvest >string ] map
        harvest
    ] map ;

: test-graphemes ( tests -- )
    [
        [ 1quotation ]
        [ concat [ >graphemes [ "" like ] map ] curry ] bi unit-test
    ] each ;

parse-test-file test-graphemes