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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-database.clj
;;
;; A Clojure implementation of Datalog -- Database
;;
;; straszheimjeffrey (gmail)
;; Created 12 Feburary 2009
(ns clojure.contrib.datalog.tests.test-database
(:use clojure.test
clojure.contrib.datalog.database))
(def test-db
(make-database
(relation :fred [:mary :sue])
(index :fred :mary)
(relation :sally [:jen :becky :joan])
(index :sally :jen)
(index :sally :becky)))
(deftest test-make-database
(is (= test-db
(datalog-database
{:sally (datalog-relation
#{:jen :joan :becky}
#{}
{:becky {}
:jen {}})
:fred (datalog-relation
#{:sue :mary}
#{}
{:mary {}})}))))
(deftest test-ensure-relation
(is (contains? (ensure-relation test-db :bob [:sam :george] [:sam]) :bob))
(is (contains? (ensure-relation test-db :fred [:mary :sue] [:mary]) :fred))
(is (thrown? Exception (ensure-relation test-db :fred [:bob :joe] []))))
(deftest test-add-tuple
(let [new-db (add-tuple test-db :fred {:mary 1 :sue 2})]
(is (= (select new-db :fred {:mary 1}) [{:mary 1 :sue 2}])))
(is (thrown? Exception (add-tuple test-db :fred {:mary 1}))))
(def test-db-1
(add-tuples test-db
[:fred :mary 1 :sue 2]
[:fred :mary 2 :sue 3]
[:sally :jen 1 :becky 2 :joan 0]
[:sally :jen 1 :becky 4 :joan 3]
[:sally :jen 1 :becky 3 :joan 0]
[:sally :jen 1 :becky 2 :joan 3]
[:fred :mary 1 :sue 1]
[:fred :mary 3 :sue 1]))
(deftest test-add-tuples
(is (= test-db-1
(datalog-database
{:sally (datalog-relation
#{:jen :joan :becky}
#{{:jen 1, :joan 0, :becky 3}
{:jen 1, :joan 0, :becky 2}
{:jen 1, :joan 3, :becky 2}
{:jen 1, :joan 3, :becky 4}}
{:becky {3
#{{:jen 1, :joan 0, :becky 3}}
4
#{{:jen 1, :joan 3, :becky 4}}
2
#{{:jen 1, :joan 0, :becky 2}
{:jen 1, :joan 3, :becky 2}}}
:jen {1
#{{:jen 1, :joan 0, :becky 3}
{:jen 1, :joan 0, :becky 2}
{:jen 1, :joan 3, :becky 2}
{:jen 1, :joan 3, :becky 4}}}})
:fred (datalog-relation
#{:sue :mary}
#{{:sue 2, :mary 1}
{:sue 1, :mary 1}
{:sue 3, :mary 2}
{:sue 1, :mary 3}}
{:mary {3
#{{:sue 1, :mary 3}}
2
#{{:sue 3, :mary 2}}
1
#{{:sue 2, :mary 1}
{:sue 1, :mary 1}}}})}))))
(deftest test-remove-tuples
(let [db (reduce #(apply remove-tuple %1 (first %2) (next %2))
test-db-1
[[:fred {:mary 1 :sue 1}]
[:fred {:mary 3 :sue 1}]
[:sally {:jen 1 :becky 2 :joan 0}]
[:sally {:jen 1 :becky 4 :joan 3}]])]
(is (= db
(datalog-database
{:sally (datalog-relation
#{:jen :joan :becky}
#{{:jen 1, :joan 0, :becky 3}
{:jen 1, :joan 3, :becky 2}}
{:becky
{3
#{{:jen 1, :joan 0, :becky 3}}
2
#{{:jen 1, :joan 3, :becky 2}}}
:jen
{1
#{{:jen 1, :joan 0, :becky 3}
{:jen 1, :joan 3, :becky 2}}}})
:fred (datalog-relation
#{:sue :mary}
#{{:sue 2, :mary 1}
{:sue 3, :mary 2}}
{:mary
{2
#{{:sue 3, :mary 2}}
1
#{{:sue 2, :mary 1}}}})})))))
(deftest test-select
(is (= (set (select test-db-1 :sally {:jen 1 :becky 2}))
#{{:jen 1 :joan 0 :becky 2} {:jen 1 :joan 3 :becky 2}}))
(is (= (set (select test-db-1 :fred {:sue 1})))
#{{:mary 3 :sue 1} {:mary 1 :sue 1}})
(is (empty? (select test-db-1 :sally {:joan 5 :jen 1}))))
(deftest test-any-match?
(is (any-match? test-db-1 :fred {:mary 3}))
(is (any-match? test-db-1 :sally {:jen 1 :becky 2 :joan 3}))
(is (not (any-match? test-db-1 :sally {:jen 5})))
(is (not (any-match? test-db-1 :fred {:mary 1 :sue 5}))))
(comment
(run-tests)
)
;; End of file
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