Implement simple methods in Associations class.

Cake/ORM/Associations.php

@@ -1,7 +1,5 @@
 <?php
 /**
- * PHP Version 5.4
- *
  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
  *
@@ -16,6 +14,9 @@
  */
 namespace Cake\ORM;
 
+use Cake\ORM\Association;
+use Cake\ORM\Entity;
+
 /**
  * A container/collection for association classes.
  *
@@ -24,13 +25,41 @@
  */
 class Associations {
 
+	protected $_items = [];
+
+/**
+ * Add an association to the collection
+ *
+ * @param string $alias The association alias
+ * @param Association The association to add.
+ * @return void
+ */
 	public function add($alias, Association $association) {
+		$this->_items[strtolower($alias)] = $association;
 	}
 
+/**
+ * Fetch an attached association by name.
+ *
+ * @param string $alias The association alias to get.
+ * @return Association|null Either the association or null.
+ */
 	public function get($alias) {
+		$alias = strtolower($alias);
+		if (isset($this->_items[$alias])) {
+			return $this->_items[$alias];
+		}
+		return null;
 	}
 
+/**
+ * Check for an attached association by name.
+ *
+ * @param string $alias The association alias to get.
+ * @return boolean Whether or not the association exists.
+ */
 	public function has($alias) {
+		return isset($this->_items[strtolower($alias)]);
 	}
 
 	public function drop($alias) {

Cake/Test/TestCase/ORM/AssociationsTest.php

@@ -0,0 +1,57 @@
+<?php
+/**
+ * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
+ * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ *
+ * Licensed under The MIT License
+ * For full copyright and license information, please see the LICENSE.txt
+ * Redistributions of files must retain the above copyright notice.
+ *
+ * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ * @link          http://cakephp.org CakePHP(tm) Project
+ * @since         CakePHP(tm) v 3.0.0
+ * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
+ */
+namespace Cake\Test\TestCase\ORM;
+
+use Cake\ORM\Association\BelongsTo;
+use Cake\ORM\Associations;
+use Cake\TestSuite\TestCase;
+
+/**
+ * Associations test case.
+ */
+class AssociationsTest extends TestCase {
+
+/**
+ * setup
+ *
+ * @return void
+ */
+	public function setUp() {
+		parent::setUp();
+		$this->associations = new Associations();
+	}
+
+/**
+ * Test the simple add/has and get methods.
+ *
+ * @return void
+ */
+	public function testAddHasAndGet() {
+		$this->assertFalse($this->associations->has('users'));
+		$this->assertFalse($this->associations->has('Users'));
+
+		$this->assertNull($this->associations->get('users'));
+		$this->assertNull($this->associations->get('Users'));
+
+		$belongsTo = new BelongsTo([]);
+		$this->assertNull($this->associations->add('Users', $belongsTo));
+		$this->assertTrue($this->associations->has('users'));
+		$this->assertTrue($this->associations->has('Users'));
+
+		$this->assertSame($belongsTo, $this->associations->get('users'));
+		$this->assertSame($belongsTo, $this->associations->get('Users'));
+	}
+
+}