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;;; r6rs-base.test --- Test suite for R6RS (rnrs base)

;;      Copyright (C) 2010, 2011 Free Software Foundation, Inc.
;;
;; This library is free software; you can redistribute it and/or
;; modify it under the terms of the GNU Lesser General Public
;; License as published by the Free Software Foundation; either
;; version 3 of the License, or (at your option) any later version.
;; 
;; This library is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; Lesser General Public License for more details.
;; 
;; You should have received a copy of the GNU Lesser General Public
;; License along with this library; if not, write to the Free Software
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA


(define-module (test-suite test-r6rs-base)
  :use-module ((rnrs base) :version (6))
  :use-module ((rnrs conditions) :version (6))
  :use-module ((rnrs exceptions) :version (6))
  :use-module (test-suite lib))


;; numbers are considered =? if their difference is less than a set
;; tolerance
(define (=? alpha beta)
  (< (abs (- alpha beta)) 1e-10))

(with-test-prefix "log (2nd arg)"
  (pass-if "log positive-base" (=? (log 8 2) 3))
  (pass-if "log negative-base" (=? (real-part (log 256 -4))
                                   0.6519359443))
  (pass-if "log base-one" (= (log 10 1) +inf.0))
  (pass-if "log base-zero"
    (catch #t
      (lambda () (log 10 0) #f)
      (lambda args #t))))

(with-test-prefix "boolean=?"
  (pass-if "boolean=? null" (boolean=?))
  (pass-if "boolean=? unary" (boolean=? #f))
  (pass-if "boolean=? many" 
    (and (boolean=? #t #t #t) 
	 (boolean=? #f #f #f) 
	 (not (boolean=? #t #f #t))))
  (pass-if "boolean=? mixed type" (not (boolean=? #t #t 'foo))))

(with-test-prefix "symbol=?"
  (pass-if "symbol=? null" (symbol=?))
  (pass-if "symbol=? unary" (symbol=? 'a))
  (pass-if "symbol=? many" 
    (and (symbol=? 'a 'a 'a) 
	 (symbol=? 'foo 'foo 'foo) 
	 (not (symbol=? 'a 'foo 'a))))
  (pass-if "symbol=? mixed type" (not (symbol=? 'a 'a 123))))

(with-test-prefix "infinite?"
  (pass-if "infinite? true on infinities"
    (and (infinite? +inf.0) (infinite? -inf.0)))
  (pass-if "infinite? false on non-infities"
    (and (not (infinite? 123)) (not (infinite? +nan.0)))))

(with-test-prefix "finite?"
  (pass-if "finite? false on infinities"
    (and (not (finite? +inf.0)) (not (finite? -inf.0))))
  (pass-if "finite? true on non-infinities"
    (and (finite? 123) (finite? 123.0))))

(with-test-prefix "exact-integer-sqrt"
  (pass-if "exact-integer-sqrt simple"
    (let-values (((s e) (exact-integer-sqrt 5)))
      (and (eqv? s 2) (eqv? e 1)))))

(with-test-prefix "integer-valued?"
  (pass-if "true on integers"
    (and (integer-valued? 3) (integer-valued? 3.0) (integer-valued? 3.0+0.0i)))
  (pass-if "false on rationals" (not (integer-valued? 3.1)))
  (pass-if "false on reals" (not (integer-valued? +nan.0))))

(with-test-prefix "rational-valued?"
  (pass-if "true on integers" (rational-valued? 3))
  (pass-if "true on rationals" 
    (and (rational-valued? 3.1) (rational-valued? 3.1+0.0i)))
  (pass-if "false on reals" 
    (or (not (rational-valued? +nan.0))
        (throw 'unresolved))))

(with-test-prefix "real-valued?"
  (pass-if "true on integers" (real-valued? 3))
  (pass-if "true on rationals" (real-valued? 3.1))
  (pass-if "true on reals" (real-valued? +nan.0)))

(with-test-prefix "vector-for-each"
  (pass-if "vector-for-each simple"
    (let ((sum 0))
      (vector-for-each (lambda (x) (set! sum (+ sum x))) '#(1 2 3))
      (eqv? sum 6))))    

(with-test-prefix "vector-map"
  (pass-if "vector-map simple"
    (equal? '#(3 2 1) (vector-map (lambda (x) (- 4 x)) '#(1 2 3)))))

(with-test-prefix "real-valued?"
  (pass-if (real-valued? +nan.0))
  (pass-if (real-valued? +nan.0+0i))
  (pass-if (real-valued? +nan.0+0.0i))
  (pass-if (real-valued? +inf.0))
  (pass-if (real-valued? -inf.0))
  (pass-if (real-valued? +inf.0+0.0i))
  (pass-if (real-valued? -inf.0-0.0i))
  (pass-if (real-valued? 3))
  (pass-if (real-valued? -2.5))
  (pass-if (real-valued? -2.5+0i))
  (pass-if (real-valued? -2.5+0.0i))
  (pass-if (real-valued? -2.5-0i))
  (pass-if (real-valued? #e1e10))
  (pass-if (real-valued? 1e200))
  (pass-if (real-valued? 1e200+0.0i))
  (pass-if (real-valued? 6/10))
  (pass-if (real-valued? 6/10+0.0i))
  (pass-if (real-valued? 6/10+0i))
  (pass-if (real-valued? 6/3))
  (pass-if (not (real-valued? 3+i)))
  (pass-if (not (real-valued? -2.5+0.01i)))
  (pass-if (not (real-valued? +nan.0+0.01i)))
  (pass-if (not (real-valued? +nan.0+nan.0i)))
  (pass-if (not (real-valued? +inf.0-0.01i)))
  (pass-if (not (real-valued? +0.01i)))
  (pass-if (not (real-valued? -inf.0i))))

(with-test-prefix "rational-valued?"
  (pass-if (not (rational-valued? +nan.0)))
  (pass-if (not (rational-valued? +nan.0+0i)))
  (pass-if (not (rational-valued? +nan.0+0.0i)))
  (pass-if (not (rational-valued? +inf.0)))
  (pass-if (not (rational-valued? -inf.0)))
  (pass-if (not (rational-valued? +inf.0+0.0i)))
  (pass-if (not (rational-valued? -inf.0-0.0i)))
  (pass-if (rational-valued? 3))
  (pass-if (rational-valued? -2.5))
  (pass-if (rational-valued? -2.5+0i))
  (pass-if (rational-valued? -2.5+0.0i))
  (pass-if (rational-valued? -2.5-0i))
  (pass-if (rational-valued? #e1e10))
  (pass-if (rational-valued? 1e200))
  (pass-if (rational-valued? 1e200+0.0i))
  (pass-if (rational-valued? 6/10))
  (pass-if (rational-valued? 6/10+0.0i))
  (pass-if (rational-valued? 6/10+0i))
  (pass-if (rational-valued? 6/3))
  (pass-if (not (rational-valued? 3+i)))
  (pass-if (not (rational-valued? -2.5+0.01i)))
  (pass-if (not (rational-valued? +nan.0+0.01i)))
  (pass-if (not (rational-valued? +nan.0+nan.0i)))
  (pass-if (not (rational-valued? +inf.0-0.01i)))
  (pass-if (not (rational-valued? +0.01i)))
  (pass-if (not (rational-valued? -inf.0i))))

(with-test-prefix "integer-valued?"
  (pass-if (not (integer-valued? +nan.0)))
  (pass-if (not (integer-valued? +nan.0+0i)))
  (pass-if (not (integer-valued? +nan.0+0.0i)))
  (pass-if (not (integer-valued? +inf.0)))
  (pass-if (not (integer-valued? -inf.0)))
  (pass-if (not (integer-valued? +inf.0+0.0i)))
  (pass-if (not (integer-valued? -inf.0-0.0i)))
  (pass-if (integer-valued? 3))
  (pass-if (integer-valued? 3.0))
  (pass-if (integer-valued? 3+0i))
  (pass-if (integer-valued? 3+0.0i))
  (pass-if (integer-valued? 8/4))
  (pass-if (integer-valued? #e1e10))
  (pass-if (integer-valued? 1e200))
  (pass-if (integer-valued? 1e200+0.0i))
  (pass-if (not (integer-valued? -2.5)))
  (pass-if (not (integer-valued? -2.5+0i)))
  (pass-if (not (integer-valued? -2.5+0.0i)))
  (pass-if (not (integer-valued? -2.5-0i)))
  (pass-if (not (integer-valued? 6/10)))
  (pass-if (not (integer-valued? 6/10+0.0i)))
  (pass-if (not (integer-valued? 6/10+0i)))
  (pass-if (not (integer-valued? 3+i)))
  (pass-if (not (integer-valued? -2.5+0.01i)))
  (pass-if (not (integer-valued? +nan.0+0.01i)))
  (pass-if (not (integer-valued? +nan.0+nan.0i)))
  (pass-if (not (integer-valued? +inf.0-0.01i)))
  (pass-if (not (integer-valued? +0.01i)))
  (pass-if (not (integer-valued? -inf.0i))))

(with-test-prefix "assert"
  (pass-if "assert returns value" (= 1 (assert 1)))
  (pass-if "assertion-violation"
    (guard (condition ((assertion-violation? condition) #t))
      (assert #f)
      #f)))