public function testSetFields() { $a = new Attachment(['fallback' => 'Fallback', 'text' => 'Text']); $a->addField(['title' => 'Title 1', 'value' => 'Value 1', 'short' => true])->addField(['title' => 'Title 2', 'value' => 'Value 2', 'short' => true]); $this->assertSame(2, count($a->getFields())); $a->setFields([]); $this->assertSame(0, count($a->getFields())); }