feat: add cart payment methods endpoint

Author: ahinkle

src/Api/Carts.php

@@ -54,4 +54,17 @@ public function shippingInformation($body = [])
 
         return $this->post('/carts/mine/shipping-information', $body);
     }
+
+    /**
+     * Lists available payment methods for a specified shopping cart. This call returns an array of objects, but detailed information about each object’s attributes might not be included.
+     *
+     * @param  array  $body
+     * @return array
+     */
+    public function paymentMethods()
+    {
+        $this->validateSingleStoreCode();
+
+        return $this->get('/carts/mine/payment-methods');
+    }
 }

tests/Api/CartTotalsTest.php

@@ -18,7 +18,8 @@ public function test_can_call_cart_totals_mine()
         Http::fake();
 
         $magento = new Magento();
-        $magento->storeCode = 'default';
+        $magento->storeCode = 'def
+        ault';
 
         $api = $magento->api('cartTotals')->mine();
 

tests/Api/CartsTest.php

@@ -100,4 +100,26 @@ public function test_must_pass_a_single_store_code_to_shipping_information()
         $magento = new Magento();
         $magento->api('carts')->shippingInformation([]);
     }
+
+    public function test_can_call_carts_payment_methods()
+    {
+        Http::fake([
+            '*rest/default/V1/carts/mine/payment-methods' => Http::response([], 200),
+        ]);
+
+        $magento = new Magento();
+        $magento->storeCode = 'default';
+
+        $api = $magento->api('carts')->paymentMethods([]);
+
+        $this->assertTrue($api->ok());
+    }
+
+    public function test_must_pass_a_single_store_code_to_payment_methods()
+    {
+        $this->expectException('exception');
+
+        $magento = new Magento();
+        $magento->api('carts')->paymentMethods([]);
+    }
 }