--- /dev/null
+<?php
+
+namespace RedUNIT\Base;
+
+use RedUNIT\Base as Base;
+use RedBeanPHP\Facade as R;
+use RedBeanPHP\RedException as RedException;
+use RedBeanPHP\QueryWriter\AQueryWriter as AQueryWriter;
+
+/**
+ * Threeway
+ *
+ * Tests link/via relations, i.e. N-M tables with additional
+ * columns.
+ *
+ * @file RedUNIT/Base/Threeway.php
+ * @desc Various tests for 3-way tables or X-way tables.
+ * @author Gabor de Mooij and the RedBeanPHP Community
+ * @license New BSD/GPLv2
+ *
+ * (c) G.J.G.T. (Gabor) de Mooij and the RedBeanPHP Community.
+ * This source file is subject to the New BSD/GPLv2 License that is bundled
+ * with this source code in the file license.txt.
+ */
+class Threeway extends Base
+{
+ /**
+ * Test whether we can use threeway tables without being
+ * bothered by unique constraints.
+ *
+ * @return void
+ */
+ public function testUniqueConstraintOnThreeways()
+ {
+ AQueryWriter::clearRenames();
+ R::nuke();
+ $person = R::dispense( 'person' );
+ $role = R::dispense( 'role' );
+ $person->sharedRole[] = $role;
+ R::store( $person );
+ $person->link( 'person_role', array(
+ 'unit' => R::dispense('unit')
+ ))->role = $role;
+ //Can we add a duplicate role now? - No because we started with a simple N-M table
+ //and unique constraint has been applied accordingly, manually change database.
+ asrt( R::count( 'person_role' ), 1 );
+ R::nuke();
+ $person = R::dispense( 'person' );
+ $role = R::dispense( 'role' );
+ $person->via('participant')->sharedRole[] = $role;
+ R::store( $person );
+ $person->link( 'participant', array(
+ 'unit' => R::dispense('unit')
+ ))->role = $role;
+ //Can we add a duplicate role now? - No because we started with a simple N-M table
+ //and unique constraint has been applied accordingly, manually change database.
+ asrt( R::count( 'participant' ), 1 );
+ R::nuke();
+ $participant = R::dispense( 'participant' );
+ $person = R::dispense( 'person' );
+ $role = R::dispense( 'role' );
+ $unit = R::dispense( 'unit' );
+ $participant->person = $person;
+ $participant->role = $role;
+ $participant->unit = $unit;
+ R::store( $participant );
+ $person->link( 'participant', array(
+ 'unit' => R::dispense('unit')
+ ))->role = $role;
+ R::store( $person );
+ //Can we add a duplicate role now?
+ asrt( R::count( 'participant' ), 2 );
+ AQueryWriter::clearRenames();
+ }
+
+ /**
+ * Test whether a duplicate bean in the list isnt saved.
+ * This was an issue with Postgres while testing the threeway tables.
+ * Postgres returned the ID as a string while other drivers returned
+ * a numeric value causing different outcome in array_diff when
+ * calculating the shared additions.
+ *
+ * @return void
+ */
+ public function testIssueWithDriverReturnID()
+ {
+ AQueryWriter::clearRenames();
+ R::nuke();
+ $book = R::dispense( 'book' );
+ $page = R::dispense( 'page' );
+ $book->sharedPageList[] = $page;
+ R::store( $book );
+ asrt( R::count( 'page' ), 1 );
+ $book = $book->fresh();
+ $book->sharedPageList[] = $page;
+ R::store( $book );
+ //don't save the duplicate bean!
+ asrt( R::count( 'page' ), 1 );
+ $book = $book->fresh();
+ $page->item = 2; //even if we change a property ?
+ $book->sharedPageList[] = $page;
+ R::store( $book );
+ foreach( $book->sharedPageList as $listItem) {
+ asrt( is_string( $listItem->id ), TRUE );
+ }
+ //same test but for own-list
+ R::nuke();
+ $book = R::dispense( 'book' );
+ $page = R::dispense( 'page' );
+ $book->ownPageList[] = $page;
+ R::store( $book );
+ asrt( R::count( 'page' ), 1 );
+ $book = $book->fresh();
+ $book->ownPageList[] = $page;
+ R::store( $book );
+ //don't save the duplicate bean!
+ asrt( R::count( 'page' ), 1 );
+ $book = $book->fresh();
+ $book->ownPageList[] = $page;
+ $page->item = 3;
+ R::store( $book );
+ //don't save the duplicate bean!
+ asrt( R::count( 'page' ), 1 );
+ foreach( $book->ownPageList as $listItem) {
+ asrt( is_string( $listItem->id ), TRUE );
+ }
+ AQueryWriter::clearRenames();
+ }
+}