Add IdentityMap tests.

tests/unit/framework/IdentityMapTest.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * @small
+ */
+class IdentityMapTest extends PHPUnit_Framework_TestCase
+{
+    protected static $object;
+
+    public static function setUpBeforeClass()
+    {
+        self::$object = new StdClass;
+    }
+
+    /**
+     * @covers IdentityMap::__construct
+     */
+    public function testIsInitiallyEmpty()
+    {
+        $map = new IdentityMap;
+        $this->assertAttributeEmpty('idToObject', $map);
+        $this->assertAttributeCount(0, 'objectToId', $map);
+
+        return $map;
+    }
+
+    /**
+     * @covers  IdentityMap::set
+     * @depends testIsInitiallyEmpty
+     */
+    public function testObjectCanBeAdded(IdentityMap $map)
+    {
+        $map->set(1, self::$object);
+
+        $idToObject = $this->readAttribute($map, 'idToObject');
+        $objectToId = $this->readAttribute($map, 'objectToId');
+
+        $this->assertContains(self::$object, $idToObject);
+        $this->assertContains(self::$object, $objectToId);
+
+        return $map;
+    }
+
+    /**
+     * @covers  IdentityMap::getObject
+     * @covers  IdentityMap::hasId
+     * @depends testObjectCanBeAdded
+     */
+    public function testObjectCanBeRetrievedById(IdentityMap $map)
+    {
+        $this->assertSame(self::$object, $map->getObject(1));
+    }
+
+    /**
+     * @covers            IdentityMap::getObject
+     * @depends           testObjectCanBeAdded
+     * @expectedException OutOfBoundsException
+     */
+    public function testExceptionIsRaisedForNonExistantId(IdentityMap $map)
+    {
+        $map->getObject(0);
+    }
+
+    /**
+     * @covers  IdentityMap::getId
+     * @covers  IdentityMap::hasObject
+     * @depends testObjectCanBeAdded
+     */
+    public function testIdCanBeRetrievedForObject(IdentityMap $map)
+    {
+        $this->assertEquals(1, $map->getId(self::$object));
+    }
+
+    /**
+     * @covers            IdentityMap::getId
+     * @depends           testObjectCanBeAdded
+     * @expectedException OutOfBoundsException
+     */
+    public function testExceptionIsRaisedForNonExistantObject(IdentityMap $map)
+    {
+        $map->getId(new StdClass);
+    }
+}