source: branches/f4grobner/5am-monom.lisp@ 3533

;;; -*-  Mode: Lisp -*- 
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;;;  Copyright (C) 1999, 2002, 2009, 2015 Marek Rychlik <rychlik@u.arizona.edu>          
;;;                                                                              
;;;  This program is free software; you can redistribute it and/or modify        
;;;  it under the terms of the GNU General Public License as published by        
;;;  the Free Software Foundation; either version 2 of the License, or           
;;;  (at your option) any later version.                                         
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;;;  This program 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 General Public License for more details.                                
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;;;  You should have received a copy of the GNU General Public License           
;;;  along with this program; if not, write to the Free Software                 
;;;  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
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;;
;; Run tests using 5am unit testing framework
;;
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;; We assume that QuickLisp package manager is installed.
;; See :
;;      https://www.quicklisp.org/beta/
;;

;; The following is unnecessary after running:
;; * (ql:add-to-init-file)
;; at lisp prompt:
;;(load "~/quicklisp/setup")

(ql:quickload :fiveam)

(require :copy "copy")
(require :monom "monom")

(defpackage #:5am-monom
  (:use :cl :it.bese.fiveam :monom :copy)
  (:documentation "Monom and derived classes tests"))

(in-package :5am-monom)

(def-suite monom-suite 
    :description "Monom package suite")

(in-suite monom-suite)

(def-fixture monom-context ()
  ;; Use SYMBOL-MACROLET not let to avoid 'unused variable' complaints
  (symbol-macrolet 
      ((m (make-instance 'monom  :exponents '(1 2 3)))
       (n (make-instance 'monom  :exponents '(4 5 6)))
       (m*n (make-instance 'monom  :exponents '(5 7 9)))
       (n/m (make-instance 'monom  :exponents '(3 3 3)))
       (m-tensor-n (make-instance 'monom  :exponents '(1 2 3 4 5 6))))
    (&body)))

(test monom-basics
  "Monom basics"
  (with-fixture monom-context () 
    (is (= (monom-dimension m) 3))
    (is (= (monom-elt m 2) 3))
    (is (= (monom-total-degree m) 6))
    (is (= (monom-sugar m) 6))
    (is (equalp  (monom->list (make-instance 'monom  :dimension 3)) '(0 0 0)) "Trivial monomial is a vector of 0's")
    (is (monom-equalp (monom-multiply-2 m n) m*n))
    (is (monom-equalp (monom-divide-by n m) n/m))
    (is (monom-equalp (monom-right-tensor-product-by m n) m-tensor-n))
    (signals
        (error "EXPONENTS must have length DIMENSION") 
      (make-instance 'monom  :dimension 3 :exponents '(1 2 3 4 5 6)))
    (is-true (monom-divides-p m n))
    (is-false (monom-divides-p n m))
    (is (monom-equalp (monom-gcd m n) m))
    (is (monom-equalp (monom-lcm m n) n))
    (is-true (monom-depends-p m 0))
    (signals
        (error "Index out of bounds")
      (monom-depends-p m 3))
    )
  (with-fixture monom-context ()
    (is (monom-equalp (monom-multiply-by m n) m*n)))
  (with-fixture monom-context ()
    (is (monom-equalp (monom-divide-by n m) n/m)))
  (with-fixture monom-context () 
    (is (equal (monom->list m) '(1 2 3)))))
  
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;;
;;        Order generics (LEX>, GRLEX>,...) tests
;;
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(def-fixture order-context ()
  (symbol-macrolet 
      ((p (make-instance 'monom :exponents '(1 3 2)))
       (q (make-instance 'monom :exponents '(1 2 3))))
    (&body)))

(test order
  "order"
  (with-fixture order-context ()
    (is-true (lex>  p q)) 
    (is-true (grlex>  p q)) 
    (is-true (revlex>  p q)) 
    (is-true (grevlex>  p q)) 
    (is-false (invlex>  p q))))

(def-fixture elim-order-context ()
  (let* ((p (make-instance 'monom :exponents '(1 2 3)))
         (q (make-instance 'monom :exponents '(4 5 6)))
         (elim-order-factory (make-elimination-order-factory))
         (elim-order-1 (funcall elim-order-factory 1))
         (elim-order-2 (funcall elim-order-factory 2)))
    (&body)))


(test elim-order
  "Elimination order"
  (with-fixture elim-order-context ()
    (is-false (funcall elim-order-1 p q))
    (is-false (funcall elim-order-2 p q))))

(run! 'monom-suite)
(format t "All tests done!~%")