public function testPostParametersTransferred() { $this->getSlimInstance()->post('/post', function ($req, $res) { return $res->write((string) $req->getBody()); }); $client = new WebTestClient($this->getSlimInstance()); $data = ['test' => 'data']; $body = $client->post('/post', $data); self::assertEquals(json_encode($data), $body); }