public function testReduce() { $productId = 'pe4OowbHVULEWICFN1t6iy2BPWXA'; $skuInfo = ''; $stock = new Stock($this->http); $response = $stock->reduce($productId, 100); $this->assertTrue($response); $stock = new Stock($this->http); $response = $stock->reduce($productId, 100); $this->assertTrue($response); }