90 lines
2.5 KiB
Scheme
90 lines
2.5 KiB
Scheme
#lang scheme/load
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(require schemeunit)
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(require 2htdp/batch-io)
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(define file "batch-io.txt")
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(define test1 #<<eos
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test1
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eos
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)
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(define test2-as-list '("test1" "test2"))
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(define test2
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(apply string-append
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(list (first test2-as-list)
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(string #\newline)
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(second test2-as-list))))
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(write-file file test1)
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(check-true (string=? (read-file file) test1) "read-file 1")
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(write-file file test2)
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(check-true (string=? (read-file file) test2) "read-file 2")
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(write-file file test1)
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(check-equal? (read-as-lines file) (list test1) "as-lines 1")
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(write-file file test2)
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(check-equal? (read-as-lines file) test2-as-list "as-lines 2")
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(define as-1strings1 (map string (string->list test1)))
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(write-file file test1)
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(check-equal? (read-as-1strings file) as-1strings1 "as-1strings 1")
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(define as-1strings2
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(map string
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(apply append
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(map string->list
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(cdr
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(foldr (lambda (f r) (cons "\n" (cons f r))) '()
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test2-as-list))))))
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(write-file file test2)
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(check-equal? (read-as-1strings file) as-1strings2 "as-lines 2")
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(define test2-a-as-list '("test1" "" "test2"))
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(define test2-a
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(apply string-append
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(list (first test2-as-list)
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(string #\newline)
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(string #\newline)
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(second test2-as-list))))
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(write-file file test2-a)
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(check-equal? (read-as-lines file) test2-a-as-list "as-lines 2-a")
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(check-equal? (read-as-words file) '("test1" "test2") "as-words 2-a")
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(define test3 #<< eos
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word1, word2
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word3, word4
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eos
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)
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(write-file file test3)
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(check-equal? (read-as-words file) '("word1," "word2" "word3," "word4")
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"as-words")
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(check-equal? (read-as-words/line file) '(("word1," "word2") ("word3," "word4"))
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"as-words")
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(check-equal? (read-as-csv file) '(("word1" "word2") ("word3" "word4"))
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"as-cvs 1")
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(check-equal? (read-as-csv/rows file length) '(2 2)
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"as-csv/rows")
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(check-exn exn:fail:contract? (lambda () (write-file 0 1)))
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(check-exn exn:fail:contract? (lambda () (write-file '("test") 1)))
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(check-exn exn:fail:contract? (lambda () (write-file "test" '("test"))))
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(check-exn exn:fail:contract? (lambda () (read-file 0)))
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(check-exn exn:fail:contract? (lambda () (read-file '("test"))))
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(check-exn exn:fail:contract? (lambda () (read-as-lines 0)))
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(check-exn exn:fail:contract? (lambda () (read-as-lines '("test"))))
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(check-exn exn:fail:contract? (lambda () (read-as-1strings 0)))
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(check-exn exn:fail:contract? (lambda () (read-as-1strings '("test"))))
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