<?php

use WPGraphQL\Type\WPEnumType;

class CheckoutMutationsTest extends \Codeception\TestCase\WPTestCase {
    public function setUp() {
        // before
        parent::setUp();

        // Create users.
        $this->shop_manager    = $this->factory->user->create( array( 'role' => 'shop_manager' ) );
        $this->simple_customer = $this->factory->user->create( array( 'role' => 'customer' ) );

        // Get helper instances
        $this->order      = $this->getModule('\Helper\Wpunit')->order();
        $this->coupon     = $this->getModule('\Helper\Wpunit')->coupon();
        $this->product    = $this->getModule('\Helper\Wpunit')->product();
        $this->variation  = $this->getModule('\Helper\Wpunit')->product_variation();
        $this->cart       = $this->getModule('\Helper\Wpunit')->cart();
        $this->tax        = $this->getModule('\Helper\Wpunit')->tax_rate();
        $this->customer   = $this->getModule('\Helper\Wpunit')->customer();
        
        // Turn on tax calculations and store shipping countries. Important!
        update_option( 'woocommerce_ship_to_countries', 'all' );
        update_option( 'woocommerce_prices_include_tax', 'no' );
		update_option( 'woocommerce_calc_taxes', 'yes' );
        update_option( 'woocommerce_tax_round_at_subtotal', 'no' );

        // Enable payment gateway.
        update_option(
            'woocommerce_bacs_settings',
            array(
                'enabled'      => 'yes',
                'title'        => 'Direct bank transfer',
                'description'  => 'Make your payment directly into our bank account. Please use your Order ID as the payment reference. Your order will not be shipped until the funds have cleared in our account.',
                'instructions' => 'Instructions that will be added to the thank you page and emails.',
                'account'      => '',
            )
        );

        // Additional cart fees.
        add_action(
            'woocommerce_cart_calculate_fees',
            function() {
                $percentage = 0.01;
                $surcharge = ( WC()->cart->cart_contents_total + WC()->cart->shipping_total ) * $percentage;	
                WC()->cart->add_fee( 'Surcharge', $surcharge, true, '' );
            }
        );

        // Create a tax rate.
        $this->tax->create(
            array(
                'country'  => '',
                'state'    => '',
                'rate'     => 20.000,
                'name'     => 'VAT',
                'priority' => '1',
                'compound' => '0',
                'shipping' => '1',
                'class'    => ''
            )
        );
        // Create sample order to be used as a parent order.
        $this->order_id = $this->order->create();

        // Clear cart.
        WC()->cart->empty_cart( true );
        wp_logout();
    }

    public function tearDown() {
        // your tear down methods here

        // then
        parent::tearDown();
    }

    private function checkout( $input ) {
        $mutation = '
            mutation checkout( $input: CheckoutInput! ) {
                checkout( input: $input ) {
                    clientMutationId
                    order {
                        id
                        orderId
                        currency
                        orderVersion
                        date
                        modified
                        status
                        discountTotal
                        discountTax
                        shippingTotal
                        shippingTax
                        cartTax
                        total
                        totalTax
                        subtotal
                        orderNumber
                        orderKey
                        createdVia
                        pricesIncludeTax
                        parent {
                            id
                        }
                        customer {
                            id
                        }
                        customerIpAddress
                        customerUserAgent
                        customerNote
                        billing {
                            firstName
                            lastName
                            company
                            address1
                            address2
                            city
                            state
                            postcode
                            country
                            email
                            phone
                        }
                        shipping {
                            firstName
                            lastName
                            company
                            address1
                            address2
                            city
                            state
                            postcode
                            country
                        }
                        paymentMethod
                        paymentMethodTitle
                        transactionId
                        dateCompleted
                        datePaid
                        cartHash
                        shippingAddressMapUrl
                        hasBillingAddress
                        hasShippingAddress
                        isDownloadPermitted
                        needsShippingAddress
                        hasDownloadableItem
                        downloadableItems {
                            downloadId
                        }
                        needsPayment
                        needsProcessing
                        metaData {
                            key
                            value
                        }
                        couponLines {
                            nodes {
                                itemId
                                orderId
                                code
                                discount
                                discountTax
                                coupon {
                                    id
                                }
                            }
                        }
                        feeLines {
                            nodes {
                                itemId
                                orderId
                                amount
                                name
                                taxStatus
                                total
                                totalTax
                                taxClass
                            }
                        }
                        shippingLines {
                            nodes {
                                itemId
                                orderId
                                methodTitle
                                total
                                totalTax
                                taxClass
                            }
                        }
                        taxLines {
                            nodes {
                                rateCode
                                label
                                taxTotal
                                shippingTaxTotal
                                isCompound
                                taxRate {
                                    rateId
                                }
                            }
                        }
                        lineItems {
                            nodes {
                                productId
                                variationId
                                quantity
                                taxClass
                                subtotal
                                subtotalTax
                                total
                                totalTax
                                taxStatus
                                product {
                                    ... on SimpleProduct {
                                        id
                                    }
                                    ... on VariableProduct {
                                        id
                                    }
                                }
                                variation {
                                    id
                                }
                            }
                        }
                    }
                    customer {
                        id
                    }
                    result
                    redirect
                }
            }
        ';

        $actual = graphql(
            array(
                'query'          => $mutation,
                'operation_name' => 'checkout',
                'variables'      => array( 'input' => $input  ),
            )
        );

        return $actual;
    }

    // tests
    public function testCheckoutOrderMutation() {
		wp_set_current_user( $this->simple_customer );
        $variable  = $this->variation->create( $this->product->create_variable() );
        $product_ids = array(
            $this->product->create_simple(),
            $this->product->create_simple(),
            $variable['product'],
        );
        $coupon     = new WC_Coupon(
            $this->coupon->create( array( 'product_ids' => $product_ids ) )
        );
        WC()->cart->add_to_cart( $product_ids[0], 3 );
        WC()->cart->add_to_cart( $product_ids[1], 6 );
        WC()->cart->add_to_cart( $product_ids[2], 2, $variable['variations'][0] );
        WC()->cart->apply_coupon( $coupon->get_code() );

        $input      = array(
            'clientMutationId'   => 'someId',
            'paymentMethod'      => 'bacs',
            'shippingMethod'     => 'flat rate',
			'billing'            => array(
                'firstName' => 'May',
                'lastName'  => 'Parker',
                'address1'  => '20 Ingram St',
                'city'      => 'New York City',
                'state'     => 'NY',
                'postcode'  => '12345',
                'country'   => 'US',
                'email'     => 'superfreak500@gmail.com',
                'phone'     => '555-555-1234',
            ),
			'shipping'           => array(
                'firstName' => 'May',
                'lastName'  => 'Parker',
                'address1'  => '20 Ingram St',
                'city'      => 'New York City',
                'state'     => 'NY',
                'postcode'  => '12345',
                'country'   => 'US',
            ),
            'metaData'           => array(
                array( 
                    'key'   => 'test_key',
                    'value' => 'test value',
                ),
            )
        );

        /**
		 * Assertion One
		 * 
		 * Test mutation and input.
		 */
        $actual = $this->checkout( $input );

        // use --debug flag to view.
        codecept_debug( $actual );

        $this->assertArrayHasKey('data', $actual );
        $this->assertArrayHasKey('checkout', $actual['data'] );
        $this->assertArrayHasKey('order', $actual['data']['checkout'] );
        $this->assertArrayHasKey('id', $actual['data']['checkout']['order'] );
        $order = \WC_Order_Factory::get_order( $actual['data']['checkout']['order']['orderId'] );

        // Get Available payment gateways.
        $available_gateways = WC()->payment_gateways->get_available_payment_gateways();

        $expected = array(
            'data' => array(
                'checkout' => array(
                    'clientMutationId' => 'someId',
                    'order'            => array_merge(
                        $this->order->print_query( $order->get_id() ),
                        array(
                            'metaData'      => array(
                                array( 
                                    'key'   => 'is_vat_exempt',
                                    'value' => 'no',
                                ),
                                array( 
                                    'key'   => 'test_key',
                                    'value' => 'test value',
                                ), 
                            ),
                            'couponLines'   => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'itemId'      => $item->get_id(),
                                                'orderId'     => $item->get_order_id(),
                                                'code'        => $item->get_code(),
                                                'discount'    => ! empty( $item->get_discount() ) ? $item->get_discount() : null,
                                                'discountTax' => ! empty( $item->get_discount_tax() ) ? $item->get_discount_tax() : null,
                                                'coupon'      => null,
                                            );
                                        },
                                        $order->get_items( 'coupon' )
                                    ) 
                                ),
                            ),
                            'feeLines'      => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'itemId'    => $item->get_id(),
                                                'orderId'   => $item->get_order_id(),
                                                'amount'    => $item->get_amount(),
                                                'name'      => $item->get_name(),
                                                'taxStatus' => strtoupper( $item->get_tax_status() ),
                                                'total'     => $item->get_total(),
                                                'totalTax'  => ! empty( $item->get_total_tax() ) ? $item->get_total_tax() : null,
                                                'taxClass'  => ! empty( $item->get_tax_class() ) 
                                                    ? WPEnumType::get_safe_name( $item->get_tax_class() )
                                                    : 'STANDARD',
                                            );
                                        },
                                        $order->get_items( 'fee' )
                                    )
                                ),
                            ),
                            'shippingLines' => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
        
                                            return array(
                                                'itemId'         => $item->get_id(),
                                                'orderId'        => $item->get_order_id(),
                                                'methodTitle'    => $item->get_method_title(),
                                                'total'          => $item->get_total(),
                                                'totalTax'       => !empty( $item->get_total_tax() )
                                                    ? $item->get_total_tax()
                                                    : null,
                                                'taxClass'       => ! empty( $item->get_tax_class() )
                                                    ? $item->get_tax_class() === 'inherit'
                                                        ? WPEnumType::get_safe_name( 'inherit cart' )
                                                        : WPEnumType::get_safe_name( $item->get_tax_class() )
                                                    : 'STANDARD'
                                            );
                                        },
                                        $order->get_items( 'shipping' )
                                    )
                                ),
                            ),
                            'taxLines'      => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'rateCode'         => $item->get_rate_code(),
                                                'label'            => $item->get_label(),
                                                'taxTotal'         => $item->get_tax_total(),
                                                'shippingTaxTotal' => $item->get_shipping_tax_total(),
                                                'isCompound'       => $item->is_compound(),
                                                'taxRate'          => array( 'rateId' => $item->get_rate_id() ),
                                            );
                                        },
                                        $order->get_items( 'tax' )
                                    )
                                ),
                            ),
                            'lineItems'     => array(
                                'nodes' => array_values(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'productId'     => $item->get_product_id(),
                                                'variationId'   => ! empty( $item->get_variation_id() )
                                                    ? $item->get_variation_id()
                                                    : null,
                                                'quantity'      => $item->get_quantity(),
                                                'taxClass'      => ! empty( $item->get_tax_class() )
                                                    ? strtoupper( $item->get_tax_class() )
                                                    : 'STANDARD',
                                                'subtotal'      => ! empty( $item->get_subtotal() ) ? $item->get_subtotal() : null,
                                                'subtotalTax'   => ! empty( $item->get_subtotal_tax() ) ? $item->get_subtotal_tax() : null,
                                                'total'         => ! empty( $item->get_total() ) ? $item->get_total() : null,
                                                'totalTax'      => ! empty( $item->get_total_tax() ) ? $item->get_total_tax() : null,
                                                'taxStatus'     => strtoupper( $item->get_tax_status() ),
                                                'product'       => array( 'id' => $this->product->to_relay_id( $item->get_product_id() ) ),
                                                'variation'     => ! empty( $item->get_variation_id() )
                                                    ? array(
                                                        'id' => $this->variation->to_relay_id( $item->get_variation_id() )
                                                    )
                                                    : null,
                                            );
                                        },
                                        $order->get_items()
                                    )
                                ),
                            ),
                        )
                    ),
                    'customer'         => array(
                        'id' => $this->customer->to_relay_id( $order->get_customer_id() )
                    ),
                    'result'           => 'success',
                    'redirect'         => $available_gateways['bacs']->process_payment( $order->get_id() )['redirect'],
                ),
            )
        );

        $this->assertEquals( $expected, $actual );
    }

    public function testCheckoutOrderMutationWithNewAccount() {
        $variable  = $this->variation->create( $this->product->create_variable() );
        $product_ids = array(
            $this->product->create_simple(),
            $this->product->create_simple(),
            $variable['product'],
        );
        $coupon     = new WC_Coupon(
            $this->coupon->create( array( 'product_ids' => $product_ids ) )
        );
        WC()->cart->add_to_cart( $product_ids[0], 3 );
        WC()->cart->add_to_cart( $product_ids[1], 6 );
        WC()->cart->add_to_cart( $product_ids[2], 2, $variable['variations'][0] );
        WC()->cart->apply_coupon( $coupon->get_code() );

        $input      = array(
            'clientMutationId'       => 'someId',
            'paymentMethod'          => 'bacs',
            'shippingMethod'         => 'flat rate',
			'billing'                => array(
                'firstName' => 'May',
                'lastName'  => 'Parker',
                'address1'  => '20 Ingram St',
                'city'      => 'New York City',
                'state'     => 'NY',
                'postcode'  => '12345',
                'country'   => 'US',
                'email'     => 'superfreak500@gmail.com',
                'phone'     => '555-555-1234',
            ),
            'account'                => array(
                'username' => 'test_user_1',
                'password' => 'test_pass'
            )
        );

        /**
		 * Assertion One
		 * 
		 * Test mutation and input.
		 */
        $actual = $this->checkout( $input );

        // use --debug flag to view.
        codecept_debug( $actual );

        $this->assertArrayHasKey('data', $actual );
        $this->assertArrayHasKey('checkout', $actual['data'] );
        $this->assertArrayHasKey('order', $actual['data']['checkout'] );
        $this->assertArrayHasKey('id', $actual['data']['checkout']['order'] );
        $order = \WC_Order_Factory::get_order( $actual['data']['checkout']['order']['orderId'] );

        // Get Available payment gateways.
        $available_gateways = WC()->payment_gateways->get_available_payment_gateways();

        $expected = array(
            'data' => array(
                'checkout' => array(
                    'clientMutationId' => 'someId',
                    'order'            => array_merge(
                        $this->order->print_query( $order->get_id() ),
                        array(
                            'metaData'      => array(
                                array( 
                                    'key'   => 'is_vat_exempt',
                                    'value' => 'no',
                                ),
                            ),
                            'couponLines'   => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'itemId'      => $item->get_id(),
                                                'orderId'     => $item->get_order_id(),
                                                'code'        => $item->get_code(),
                                                'discount'    => ! empty( $item->get_discount() ) ? $item->get_discount() : null,
                                                'discountTax' => ! empty( $item->get_discount_tax() ) ? $item->get_discount_tax() : null,
                                                'coupon'      => null,
                                            );
                                        },
                                        $order->get_items( 'coupon' )
                                    ) 
                                ),
                            ),
                            'feeLines'      => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'itemId'    => $item->get_id(),
                                                'orderId'   => $item->get_order_id(),
                                                'amount'    => $item->get_amount(),
                                                'name'      => $item->get_name(),
                                                'taxStatus' => strtoupper( $item->get_tax_status() ),
                                                'total'     => $item->get_total(),
                                                'totalTax'  => ! empty( $item->get_total_tax() ) ? $item->get_total_tax() : null,
                                                'taxClass'  => ! empty( $item->get_tax_class() ) 
                                                    ? WPEnumType::get_safe_name( $item->get_tax_class() )
                                                    : 'STANDARD',
                                            );
                                        },
                                        $order->get_items( 'fee' )
                                    )
                                ),
                            ),
                            'shippingLines' => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
        
                                            return array(
                                                'itemId'         => $item->get_id(),
                                                'orderId'        => $item->get_order_id(),
                                                'methodTitle'    => $item->get_method_title(),
                                                'total'          => $item->get_total(),
                                                'totalTax'       => !empty( $item->get_total_tax() )
                                                    ? $item->get_total_tax()
                                                    : null,
                                                'taxClass'       => ! empty( $item->get_tax_class() )
                                                    ? $item->get_tax_class() === 'inherit'
                                                        ? WPEnumType::get_safe_name( 'inherit cart' )
                                                        : WPEnumType::get_safe_name( $item->get_tax_class() )
                                                    : 'STANDARD'
                                            );
                                        },
                                        $order->get_items( 'shipping' )
                                    )
                                ),
                            ),
                            'taxLines'      => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'rateCode'         => $item->get_rate_code(),
                                                'label'            => $item->get_label(),
                                                'taxTotal'         => $item->get_tax_total(),
                                                'shippingTaxTotal' => $item->get_shipping_tax_total(),
                                                'isCompound'       => $item->is_compound(),
                                                'taxRate'          => array( 'rateId' => $item->get_rate_id() ),
                                            );
                                        },
                                        $order->get_items( 'tax' )
                                    )
                                ),
                            ),
                            'lineItems'     => array(
                                'nodes' => array_values(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'productId'     => $item->get_product_id(),
                                                'variationId'   => ! empty( $item->get_variation_id() )
                                                    ? $item->get_variation_id()
                                                    : null,
                                                'quantity'      => $item->get_quantity(),
                                                'taxClass'      => ! empty( $item->get_tax_class() )
                                                    ? strtoupper( $item->get_tax_class() )
                                                    : 'STANDARD',
                                                'subtotal'      => ! empty( $item->get_subtotal() ) ? $item->get_subtotal() : null,
                                                'subtotalTax'   => ! empty( $item->get_subtotal_tax() ) ? $item->get_subtotal_tax() : null,
                                                'total'         => ! empty( $item->get_total() ) ? $item->get_total() : null,
                                                'totalTax'      => ! empty( $item->get_total_tax() ) ? $item->get_total_tax() : null,
                                                'taxStatus'     => strtoupper( $item->get_tax_status() ),
                                                'product'       => array( 'id' => $this->product->to_relay_id( $item->get_product_id() ) ),
                                                'variation'     => ! empty( $item->get_variation_id() )
                                                    ? array(
                                                        'id' => $this->variation->to_relay_id( $item->get_variation_id() )
                                                    )
                                                    : null,
                                            );
                                        },
                                        $order->get_items()
                                    )
                                ),
                            ),
                        )
                    ),
                    'customer'         => array(
                        'id' => $this->customer->to_relay_id( $order->get_customer_id() )
                    ),
                    'result'           => 'success',
                    'redirect'         => $available_gateways['bacs']->process_payment( $order->get_id() )['redirect'],
                ),
            )
        );

        $this->assertEquals( $expected, $actual );
    }

    public function testCheckoutOrderMutationWithNoAccount() {
        update_option( 'woocommerce_enable_guest_checkout', 'yes' );
        $variable  = $this->variation->create( $this->product->create_variable() );
        $product_ids = array(
            $this->product->create_simple(),
            $this->product->create_simple(),
            $variable['product'],
        );
        $coupon     = new WC_Coupon(
            $this->coupon->create( array( 'product_ids' => $product_ids ) )
        );
        WC()->cart->add_to_cart( $product_ids[0], 3 );
        WC()->cart->add_to_cart( $product_ids[1], 6 );
        WC()->cart->add_to_cart( $product_ids[2], 2, $variable['variations'][0] );
        WC()->cart->apply_coupon( $coupon->get_code() );

        $input      = array(
            'clientMutationId'   => 'someId',
            'paymentMethod'      => 'bacs',
            'shippingMethod'     => 'flat rate',
			'billing'            => array(
                'firstName' => 'May',
                'lastName'  => 'Parker',
                'address1'  => '20 Ingram St',
                'city'      => 'New York City',
                'state'     => 'NY',
                'postcode'  => '12345',
                'country'   => 'US',
                'email'     => 'superfreak500@gmail.com',
                'phone'     => '555-555-1234',
            ),
			'shipping'           => array(
                'firstName' => 'May',
                'lastName'  => 'Parker',
                'address1'  => '20 Ingram St',
                'city'      => 'New York City',
                'state'     => 'NY',
                'postcode'  => '12345',
                'country'   => 'US',
            ),
        );

        /**
		 * Assertion One
		 * 
		 * Test mutation and input.
		 */
        $actual = $this->checkout( $input );

        // use --debug flag to view.
        codecept_debug( $actual );

        $this->assertArrayHasKey('data', $actual );
        $this->assertArrayHasKey('checkout', $actual['data'] );
        $this->assertArrayHasKey('order', $actual['data']['checkout'] );
        $this->assertArrayHasKey('id', $actual['data']['checkout']['order'] );
        $order = \WC_Order_Factory::get_order( $actual['data']['checkout']['order']['orderId'] );

        // Get Available payment gateways.
        $available_gateways = WC()->payment_gateways->get_available_payment_gateways();

        $expected = array(
            'data' => array(
                'checkout' => array(
                    'clientMutationId' => 'someId',
                    'order'            => array_merge(
                        $this->order->print_restricted_query( $order->get_id() ),
                        array(
                            'metaData'      => array(
                                array( 
                                    'key'   => 'is_vat_exempt',
                                    'value' => 'no',
                                ), 
                            ),
                            'couponLines'   => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'itemId'      => $item->get_id(),
                                                'orderId'     => $item->get_order_id(),
                                                'code'        => $item->get_code(),
                                                'discount'    => ! empty( $item->get_discount() ) ? $item->get_discount() : null,
                                                'discountTax' => ! empty( $item->get_discount_tax() ) ? $item->get_discount_tax() : null,
                                                'coupon'      => null,
                                            );
                                        },
                                        $order->get_items( 'coupon' )
                                    ) 
                                ),
                            ),
                            'feeLines'      => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'itemId'    => $item->get_id(),
                                                'orderId'   => $item->get_order_id(),
                                                'amount'    => $item->get_amount(),
                                                'name'      => $item->get_name(),
                                                'taxStatus' => strtoupper( $item->get_tax_status() ),
                                                'total'     => $item->get_total(),
                                                'totalTax'  => ! empty( $item->get_total_tax() ) ? $item->get_total_tax() : null,
                                                'taxClass'  => ! empty( $item->get_tax_class() ) 
                                                    ? WPEnumType::get_safe_name( $item->get_tax_class() )
                                                    : 'STANDARD',
                                            );
                                        },
                                        $order->get_items( 'fee' )
                                    )
                                ),
                            ),
                            'shippingLines' => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
        
                                            return array(
                                                'itemId'         => $item->get_id(),
                                                'orderId'        => $item->get_order_id(),
                                                'methodTitle'    => $item->get_method_title(),
                                                'total'          => $item->get_total(),
                                                'totalTax'       => !empty( $item->get_total_tax() )
                                                    ? $item->get_total_tax()
                                                    : null,
                                                'taxClass'       => ! empty( $item->get_tax_class() )
                                                    ? $item->get_tax_class() === 'inherit'
                                                        ? WPEnumType::get_safe_name( 'inherit cart' )
                                                        : WPEnumType::get_safe_name( $item->get_tax_class() )
                                                    : 'STANDARD'
                                            );
                                        },
                                        $order->get_items( 'shipping' )
                                    )
                                ),
                            ),
                            'taxLines'      => array(
                                'nodes' => array_reverse(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'rateCode'         => $item->get_rate_code(),
                                                'label'            => $item->get_label(),
                                                'taxTotal'         => $item->get_tax_total(),
                                                'shippingTaxTotal' => $item->get_shipping_tax_total(),
                                                'isCompound'       => $item->is_compound(),
                                                'taxRate'          => array( 'rateId' => $item->get_rate_id() ),
                                            );
                                        },
                                        $order->get_items( 'tax' )
                                    )
                                ),
                            ),
                            'lineItems'     => array(
                                'nodes' => array_values(
                                    array_map(
                                        function( $item ) {
                                            return array(
                                                'productId'     => $item->get_product_id(),
                                                'variationId'   => ! empty( $item->get_variation_id() )
                                                    ? $item->get_variation_id()
                                                    : null,
                                                'quantity'      => $item->get_quantity(),
                                                'taxClass'      => ! empty( $item->get_tax_class() )
                                                    ? strtoupper( $item->get_tax_class() )
                                                    : 'STANDARD',
                                                'subtotal'      => ! empty( $item->get_subtotal() ) ? $item->get_subtotal() : null,
                                                'subtotalTax'   => ! empty( $item->get_subtotal_tax() ) ? $item->get_subtotal_tax() : null,
                                                'total'         => ! empty( $item->get_total() ) ? $item->get_total() : null,
                                                'totalTax'      => ! empty( $item->get_total_tax() ) ? $item->get_total_tax() : null,
                                                'taxStatus'     => strtoupper( $item->get_tax_status() ),
                                                'product'       => array( 'id' => $this->product->to_relay_id( $item->get_product_id() ) ),
                                                'variation'     => ! empty( $item->get_variation_id() )
                                                    ? array(
                                                        'id' => $this->variation->to_relay_id( $item->get_variation_id() )
                                                    )
                                                    : null,
                                            );
                                        },
                                        $order->get_items()
                                    )
                                ),
                            ),
                        )
                    ),
                    'customer'         => null,
                    'result'           => 'success',
                    'redirect'         => $available_gateways['bacs']->process_payment( $order->get_id() )['redirect'],
                ),
            )
        );

        $this->assertEquals( $expected, $actual );
    }
}