Doctrine\ODM\MongoDB\Mapping\ClassMetadata::mapField PHP Method

    public function mapField(array $mapping)
    {
        $mapping = parent::mapField($mapping);
        $reflProp = $this->reflClass->getProperty($mapping['fieldName']);
        $reflProp->setAccessible(true);
        $this->reflFields[$mapping['fieldName']] = $reflProp;
    }

 public function testGetMetadataForSingleClass()
 {
     // Self-made metadata
     $cm1 = new ClassMetadata('Doctrine\\ODM\\MongoDB\\Tests\\Mapping\\TestDocument1');
     $cm1->setCollection('group');
     // Add a mapped field
     $cm1->mapField(array('fieldName' => 'name', 'type' => 'string'));
     // Add a mapped field
     $cm1->mapField(array('fieldName' => 'id', 'id' => true));
     // and a mapped association
     $cm1->mapOneEmbedded(array('fieldName' => 'other', 'targetDocument' => 'Other'));
     $cm1->mapOneEmbedded(array('fieldName' => 'association', 'targetDocument' => 'Other'));
     // SUT
     $cmf = new ClassMetadataFactoryTestSubject();
     $cmf->setMetadataFor('Doctrine\\ODM\\MongoDB\\Tests\\Mapping\\TestDocument1', $cm1);
     // Prechecks
     $this->assertEquals(array(), $cm1->parentClasses);
     $this->assertEquals(ClassMetadata::INHERITANCE_TYPE_NONE, $cm1->inheritanceType);
     $this->assertTrue($cm1->hasField('name'));
     $this->assertEquals(4, count($cm1->fieldMappings));
     // Go
     $cm1 = $cmf->getMetadataFor('Doctrine\\ODM\\MongoDB\\Tests\\Mapping\\TestDocument1');
     $this->assertEquals('group', $cm1->collection);
     $this->assertEquals(array(), $cm1->parentClasses);
     $this->assertTrue($cm1->hasField('name'));
 }