Doctrine\Tests\OXM\Marshaller\CollectionsTest::collectionWrapsXmlMappedSuperclass PHP Method

    public function collectionWrapsXmlMappedSuperclass()
    {
        $wrapperForSuperclass = new WrapperForSuperclass();
        $childA = new ChildA();
        $childA->aField = 'blue';
        $childB = new ChildB();
        $childB->bField = 'red';
        $wrapperForSuperclass->children = array($childA, $childB);
        $xml = $this->marshaller->marshalToString($wrapperForSuperclass);
        $this->assertXmlStringEqualsXmlString('<?xml version="1.0" encoding="UTF-8"?>
        <wrapper-for-superclass>
            <foo>
                <child-a>
                    <a-field>blue</a-field>
                </child-a>
                <child-b>
                    <b-field>red</b-field>
                </child-b>
            </foo>
        </wrapper-for-superclass>', $xml);
        $otherWrapperForSuperclass = $this->marshaller->unmarshalFromString($xml);
        $this->assertEquals(2, count($otherWrapperForSuperclass->children));
        $this->assertContains('blue', $otherWrapperForSuperclass->children[0]->aField);
        $this->assertContains('red', $otherWrapperForSuperclass->children[1]->bField);
    }