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;; Copyright (c) Jeffrey Straszheim. All rights reserved. The use and
;; distribution terms for this software are covered by the Eclipse Public
;; License 1.0 (http://opensource.org/licenses/eclipse-1.0.php) which can
;; be found in the file epl-v10.html at the root of this distribution. By
;; using this software in any fashion, you are agreeing to be bound by the
;; terms of this license. You must not remove this notice, or any other,
;; from this software.
;;
;; test-literals.clj
;;
;; A Clojure implementation of Datalog -- Literals tests
;;
;; straszheimjeffrey (gmail)
;; Created 25 Feburary 2009
(ns clojure.contrib.datalog.tests.test-literals
(:use clojure.test)
(:use clojure.contrib.datalog.literals
clojure.contrib.datalog.database))
(def pl (eval (build-literal '(:fred :x ?x :y ?y :z 3))))
(def nl (eval (build-literal '(not! :fred :x ?x :y ?y :z 3))))
(def cl (eval (build-literal '(if > ?x 3))))
(def bl (eval (build-literal '(:fred))))
(def bns {:x '?x :y '?y :z 3})
(deftest test-build-literal
(is (= (:predicate pl) :fred))
(is (= (:term-bindings pl) bns))
(is (= (:predicate nl) :fred))
(is (= (:term-bindings nl) bns))
(is (= (:symbol cl) '>))
(is (= (:terms cl) '(?x 3)))
(is ((:fun cl) [4 3]))
(is (not ((:fun cl) [2 4])))
(is (= (:predicate bl) :fred)))
(deftest test-literal-predicate
(is (= (literal-predicate pl) :fred))
(is (= (literal-predicate nl) :fred))
(is (nil? (literal-predicate cl)))
(is (= (literal-predicate bl) :fred)))
(deftest test-literal-columns
(is (= (literal-columns pl) #{:x :y :z}))
(is (= (literal-columns nl) #{:x :y :z}))
(is (nil? (literal-columns cl)))
(is (empty? (literal-columns bl))))
(deftest test-literal-vars
(is (= (literal-vars pl) #{'?x '?y}))
(is (= (literal-vars nl) #{'?x '?y}))
(is (= (literal-vars cl) #{'?x}))
(is (empty? (literal-vars bl))))
(deftest test-positive-vars
(is (= (positive-vars pl) (literal-vars pl)))
(is (nil? (positive-vars nl)))
(is (nil? (positive-vars cl)))
(is (empty? (positive-vars bl))))
(deftest test-negative-vars
(is (nil? (negative-vars pl)))
(is (= (negative-vars nl) (literal-vars nl)))
(is (= (negative-vars cl) (literal-vars cl)))
(is (empty? (negative-vars bl))))
(deftest test-negated?
(is (not (negated? pl)))
(is (negated? nl))
(is (not (negated? cl))))
(deftest test-vs-from-cs
(is (= (get-vs-from-cs pl #{:x}) #{'?x}))
(is (empty? (get-vs-from-cs pl #{:z})))
(is (= (get-vs-from-cs pl #{:x :r}) #{'?x}))
(is (empty? (get-vs-from-cs pl #{}))))
(deftest test-cs-from-vs
(is (= (get-cs-from-vs pl #{'?x}) #{:x}))
(is (= (get-cs-from-vs pl #{'?x '?r}) #{:x}))
(is (empty? (get-cs-from-vs pl #{}))))
(deftest test-literal-appropriate?
(is (not (literal-appropriate? #{} pl)))
(is (literal-appropriate? #{'?x} pl))
(is (not (literal-appropriate? #{'?x} nl)))
(is (literal-appropriate? #{'?x '?y} nl))
(is (not (literal-appropriate? #{'?z} cl)))
(is (literal-appropriate? #{'?x} cl)))
(deftest test-adorned-literal
(is (= (literal-predicate (adorned-literal pl #{:x}))
{:pred :fred :bound #{:x}}))
(is (= (literal-predicate (adorned-literal nl #{:x :y :q}))
{:pred :fred :bound #{:x :y}}))
(is (= (:term-bindings (adorned-literal nl #{:x}))
{:x '?x :y '?y :z 3}))
(is (= (adorned-literal cl #{})
cl)))
(deftest test-get-adorned-bindings
(is (= (get-adorned-bindings (literal-predicate (adorned-literal pl #{:x})))
#{:x}))
(is (= (get-adorned-bindings (literal-predicate pl))
nil)))
(deftest test-get-base-predicate
(is (= (get-base-predicate (literal-predicate (adorned-literal pl #{:x})))
:fred))
(is (= (get-base-predicate (literal-predicate pl))
:fred)))
(deftest test-magic-literal
(is (= (magic-literal pl)
{:predicate {:pred :fred :magic true}, :term-bindings {}, :literal-type :clojure.contrib.datalog.literals/literal}))
(is (= (magic-literal (adorned-literal pl #{:x}))
{:predicate {:pred :fred :magic true :bound #{:x}},
:term-bindings {:x '?x},
:literal-type :clojure.contrib.datalog.literals/literal})))
(comment
(use 'clojure.contrib.stacktrace) (e)
(use :reload 'clojure.contrib.datalog.literals)
)
(def db1 (make-database
(relation :fred [:x :y])
(index :fred :x)
(relation :sally [:x])))
(def db2 (add-tuples db1
[:fred :x 1 :y :mary]
[:fred :x 1 :y :becky]
[:fred :x 3 :y :sally]
[:fred :x 4 :y :joe]
[:sally :x 1]
[:sally :x 2]))
(def lit1 (eval (build-literal '(:fred :x ?x :y ?y))))
(def lit2 (eval (build-literal '(not! :fred :x ?x))))
(def lit3 (eval (build-literal '(if > ?x ?y))))
(def lit4 (adorned-literal (eval (build-literal '(:joan :x ?x :y ?y))) #{:x}))
(deftest test-join-literal
(is (= (set (join-literal db2 lit1 [{'?x 1} {'?x 2} {'?x 3}]))
#{{'?x 1, '?y :mary} {'?x 1, '?y :becky} {'?x 3, '?y :sally}}))
(is (= (join-literal db2 lit2 [{'?x 1} {'?x 2} {'?x 3}])
[{'?x 2}]))
(is (= (join-literal db2 lit3 [{'?x 1 '?y 2} {'?x 3 '?y 1}])
[{'?x 3 '?y 1}])))
(deftest test-project-literal
(is (= ((project-literal db2 lit4 [{'?x 1 '?y 3}{'?x 4 '?y 2}]) {:pred :joan :bound #{:x}})
(datalog-relation
;; Schema
#{:y :x}
;; Data
#{
{:x 1, :y 3}
{:x 4, :y 2}
}
;; Indexes
{
:x
{
4
#{{:x 4, :y 2}}
1
#{{:x 1, :y 3}}
}
}))))
(comment
(run-tests)
)
;; End of file
|
