public function testChildren() { $child = $this->getMock('JLM\\ProductBundle\\Model\\ProductCategoryInterface'); $this->assertCount(0, $this->entity->getChildren()); $this->assertTrue($this->entity->addChild($child)); $this->assertCount(1, $this->entity->getChildren()); $this->assertTrue($this->entity->removeChild($child)); $this->assertCount(0, $this->entity->getChildren()); }