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;;; r6rs-hashtables.test --- Test suite for R6RS (rnrs hashtables)
;; Copyright (C) 2010 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 Lice6nse, 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-rnrs-hashtable)
:use-module (ice-9 receive)
:use-module ((rnrs hashtables) :version (6))
:use-module ((rnrs exceptions) :version (6))
:use-module (srfi srfi-1)
:use-module (test-suite lib))
(with-test-prefix "make-eq-hashtable"
(pass-if "eq hashtable compares keys with eq?"
(let ((eq-hashtable (make-eq-hashtable)))
(hashtable-set! eq-hashtable (list 'foo) #t)
(hashtable-set! eq-hashtable 'sym #t)
(and (not (hashtable-contains? eq-hashtable (list 'foo)))
(hashtable-contains? eq-hashtable 'sym)))))
(with-test-prefix "make-eqv-hashtable"
(pass-if "eqv hashtable compares keys with eqv?"
(let ((eqv-hashtable (make-eqv-hashtable)))
(hashtable-set! eqv-hashtable (list 'foo) #t)
(hashtable-set! eqv-hashtable 4 #t)
(and (not (hashtable-contains? eqv-hashtable (list 'foo)))
(hashtable-contains? eqv-hashtable 4)))))
(with-test-prefix "make-hashtable"
(pass-if "hashtable compares keys with custom equality function"
(let* ((abs-eqv? (lambda (x y) (eqv? (abs x) (abs y))))
(abs-hashtable (make-hashtable abs abs-eqv?)))
(hashtable-set! abs-hashtable -4 #t)
(and (not (hashtable-contains? abs-hashtable 6))
(hashtable-contains? abs-hashtable 4))))
(pass-if "hash function value used modulo capacity"
(let* ((constant-hash (lambda (x) most-positive-fixnum))
(constant-hashtable (make-hashtable constant-hash eq?)))
(hashtable-set! constant-hashtable 'foo 'bar)
(hashtable-contains? constant-hashtable 'foo))))
(with-test-prefix "hashtable?"
(pass-if "hashtable? is #t on hashtables"
(let ((hashtable (make-eq-hashtable)))
(hashtable? hashtable)))
(pass-if "hashtable? is #f on non-hashtables"
(let ((not-hashtable (list)))
(not (hashtable? not-hashtable)))))
(with-test-prefix "hashtable-size"
(pass-if "hashtable-size returns current size"
(let ((hashtable (make-eq-hashtable)))
(and (eqv? (hashtable-size hashtable) 0)
(hashtable-set! hashtable 'foo #t)
(eqv? (hashtable-size hashtable) 1)))))
(with-test-prefix "hashtable-ref"
(pass-if "hashtable-ref returns value for bound key"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'sym 'foo)
(eq? (hashtable-ref hashtable 'sym 'bar) 'foo)))
(pass-if "hashtable-ref returns default for unbound key"
(let ((hashtable (make-eq-hashtable)))
(eq? (hashtable-ref hashtable 'sym 'bar) 'bar))))
(with-test-prefix "hashtable-set!"
(pass-if "hashtable-set! returns unspecified"
(let ((hashtable (make-eq-hashtable)))
(unspecified? (hashtable-set! hashtable 'foo 'bar))))
(pass-if "hashtable-set! allows storing #f"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'foo #f)
(not (hashtable-ref hashtable 'foo 'bar)))))
(with-test-prefix "hashtable-delete!"
(pass-if "hashtable-delete! removes association"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'foo 'bar)
(and (unspecified? (hashtable-delete! hashtable 'foo))
(not (hashtable-ref hashtable 'foo #f))))))
(with-test-prefix "hashtable-contains?"
(pass-if "hashtable-contains? returns #t when association present"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'foo 'bar)
(let ((contains (hashtable-contains? hashtable 'foo)))
(and (boolean? contains) contains))))
(pass-if "hashtable-contains? returns #f when association not present"
(let ((hashtable (make-eq-hashtable)))
(not (hashtable-contains? hashtable 'foo)))))
(with-test-prefix "hashtable-update!"
(pass-if "hashtable-update! adds return value of proc on bound key"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'foo 0)
(hashtable-update! hashtable 'foo (lambda (x) (+ x 1)) 100)
(eqv? (hashtable-ref hashtable 'foo #f) 1)))
(pass-if "hashtable-update! adds default value on unbound key"
(let ((hashtable (make-eq-hashtable)))
(hashtable-update! hashtable 'foo (lambda (x) (+ x 1)) 100)
(eqv? (hashtable-ref hashtable 'foo #f) 101))))
(with-test-prefix "hashtable-copy"
(pass-if "hashtable-copy produces copy of hashtable"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'foo 1)
(hashtable-set! hashtable 'bar 2)
(let ((copied-table (hashtable-copy hashtable)))
(and (eqv? (hashtable-ref hashtable 'foo #f) 1)
(eqv? (hashtable-ref hashtable 'bar #f) 2)))))
(pass-if "hashtable-copy with mutability #f produces immutable copy"
(let ((copied-table (hashtable-copy (make-eq-hashtable) #f)))
(guard (exc (else #t))
(hashtable-set! copied-table 'foo 1)
#f))))
(with-test-prefix "hashtable-clear!"
(pass-if "hashtable-clear! removes all values from hashtable"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'foo 1)
(hashtable-set! hashtable 'bar 2)
(and (unspecified? (hashtable-clear! hashtable))
(eqv? (hashtable-size hashtable) 0)))))
(with-test-prefix "hashtable-keys"
(pass-if "hashtable-keys returns all keys"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'foo #t)
(hashtable-set! hashtable 'bar #t)
(let ((keys (vector->list (hashtable-keys hashtable))))
(and (memq 'foo keys) (memq 'bar keys) #t)))))
(with-test-prefix "hashtable-entries"
(pass-if "hashtable-entries returns all entries"
(let ((hashtable (make-eq-hashtable)))
(hashtable-set! hashtable 'foo 1)
(hashtable-set! hashtable 'bar 2)
(receive
(keys values)
(hashtable-entries hashtable)
(let f ((counter 0) (success #t))
(if (or (not success) (= counter 2))
success
(case (vector-ref keys counter)
((foo) (f (+ counter 1) (eqv? (vector-ref values counter) 1)))
((bar) (f (+ counter 1) (eqv? (vector-ref values counter) 2)))
(else f 0 #f))))))))
(with-test-prefix "hashtable-equivalence-function"
(pass-if "hashtable-equivalence-function returns eqv function"
(let* ((abs-eqv? (lambda (x y) (eqv? (abs x) (abs y))))
(abs-hashtable (make-hashtable abs abs-eqv?)))
(eq? (hashtable-equivalence-function abs-hashtable) abs-eqv?))))
(with-test-prefix "hashtable-hash-function"
(pass-if "hashtable-hash-function returns hash function"
(let ((abs-hashtable (make-hashtable abs eqv?)))
(eq? (hashtable-hash-function abs-hashtable) abs)))
(pass-if "hashtable-hash-function returns #f on eq table"
(eq? #f (hashtable-hash-function (make-eq-hashtable))))
(pass-if "hashtable-hash-function returns #f on eqv table"
(eq? #f (hashtable-hash-function (make-eqv-hashtable)))))
(with-test-prefix "hashtable-mutable?"
(pass-if "hashtable-mutable? is #t on mutable hashtables"
(hashtable-mutable? (hashtable-copy (make-eq-hashtable) #t)))
(pass-if "hashtable-mutable? is #f on immutable hashtables"
(not (hashtable-mutable? (hashtable-copy (make-eq-hashtable) #f)))))
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