test.scm

(import (scheme base)
        (scheme write)
        (scheme char)
        (cyclone test)
        (cyclone string))

(define (digit-value ch)
  (case ch
    ((#\0) 0) ((#\1) 1) ((#\2) 2) ((#\3) 3) ((#\4) 4)
    ((#\5) 5) ((#\6) 6) ((#\7) 7) ((#\8) 8) ((#\9) 9) (else #f)))

(define (string-find/index str pred)
  (string-cursor->index str (string-find str pred)))

(define (string-find-right/index str pred)
  (string-cursor->index str (string-find-right str pred)))

(define (string-skip/index str pred)
  (string-cursor->index str (string-skip str pred)))

(define (string-skip-right/index str pred)
  (string-cursor->index str (string-skip-right str pred)))

(define (run-tests)
  (test-begin "strings")

  (test #t (string-null? ""))
  (test #f (string-null? " "))

  (test #t (string-every char-alphabetic? "abc"))
  (test #f (string-every char-alphabetic? "abc0"))
  (test #f (string-every char-alphabetic? " abc"))
  (test #f (string-every char-alphabetic? "a.c"))

  (test 3 (string-any digit-value "a3c"))
  (test #f (string-any digit-value "abc"))

  (test 0 (string-find/index "abc" char-alphabetic?))
  (test 3 (string-find/index "abc0" char-numeric?))
  (test 3 (string-find/index "abc" char-numeric?))

  (test 3 (string-find-right/index "abc" char-alphabetic?))
  (test 4 (string-find-right/index "abc0" char-numeric?))
  (test 0 (string-find-right/index "abc" char-numeric?))

  (test 0 (string-skip/index "abc" char-numeric?))
  (test 3 (string-skip/index "abc0" char-alphabetic?))
  (test 3 (string-skip/index "abc" char-alphabetic?))

  (test 3 (string-skip-right/index "abc" char-numeric?))
  (test 4 (string-skip-right/index "abc0" char-alphabetic?))
  (test 0 (string-skip-right/index "abc" char-alphabetic?))

  (test "foobarbaz" (string-join '("foo" "bar" "baz")))
  (test "foo bar baz" (string-join '("foo" "bar" "baz") " "))

  (test '() (string-split ""))
  (test '("" "") (string-split " "))
  (test '("foo" "bar" "baz") (string-split "foo bar baz"))
  (test '("foo" "bar" "baz" "") (string-split "foo bar baz "))
  (test '("foo" "bar" "baz") (string-split "foo:bar:baz" #\:))
  (test '("" "foo" "bar" "baz") (string-split ":foo:bar:baz" #\:))
  (test '("foo" "bar" "baz" "") (string-split "foo:bar:baz:" #\:))
  (test '("foo" "bar:baz") (string-split "foo:bar:baz" #\: 2))

  (test "abc" (string-trim-left "  abc"))
  (test "abc  " (string-trim-left "abc  "))
  (test "abc  " (string-trim-left "  abc  "))

  (test "  abc" (string-trim-right "  abc"))
  (test "abc" (string-trim-right "abc  "))
  (test "  abc" (string-trim-right "  abc  "))

  (test "abc" (string-trim "  abc"))
  (test "abc" (string-trim "abc  "))
  (test "abc" (string-trim "  abc  "))
  (test "" (string-trim ""))
  (test "" (string-trim " "))
  (test "" (string-trim "  "))

  (test #t (string-prefix? "abc" "abc"))
  (test #t (string-prefix? "abc" "abcde"))
  (test #f (string-prefix? "abcde" "abc"))

  (test #t (string-suffix? "abc" "abc"))
  (test #f (string-suffix? "abc" "abcde"))
  (test #f (string-suffix? "abcde" "abc"))
  (test #f (string-suffix? "abcde" "cde"))
  (test #t (string-suffix? "cde" "abcde"))

  (test 3 (string-count "!a0 bc /.," char-alphabetic?))

  (test "ABC" (string-map char-upcase "abc"))

  (test-end))

(run-tests)