apskel-pos-backend/internal/transformer/order_transformer_test.go

package transformer

import (
	"encoding/json"
	"testing"

	"apskel-pos-be/internal/contract"
	"apskel-pos-be/internal/models"

	"github.com/google/uuid"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestCreateOrderContractToModelCarriesWeight(t *testing.T) {
	weight := 1.25

	result := CreateOrderContractToModel(&contract.CreateOrderRequest{
		OutletID: uuid.New(),
		UserID:   uuid.New(),
		OrderItems: []contract.CreateOrderItemRequest{
			{
				ProductID: uuid.New(),
				Quantity:  1,
				Weight:    &weight,
			},
		},
	})

	require.Len(t, result.OrderItems, 1)
	require.NotNil(t, result.OrderItems[0].Weight)
	require.Equal(t, weight, *result.OrderItems[0].Weight)
}

func TestCreateOrderContractToModelCarriesCustomer(t *testing.T) {
	customerID := uuid.New()

	result := CreateOrderContractToModel(&contract.CreateOrderRequest{
		OutletID:   uuid.New(),
		UserID:     uuid.New(),
		CustomerID: &customerID,
		OrderItems: []contract.CreateOrderItemRequest{{ProductID: uuid.New(), Quantity: 1}},
	})

	require.NotNil(t, result.CustomerID, "the order's customer is who earns EnakPoint and EnakCoin")
	require.Equal(t, customerID, *result.CustomerID)
}

func TestAddToOrderContractToModelCarriesWeight(t *testing.T) {
	weight := 0.8

	result := AddToOrderContractToModel(&contract.AddToOrderRequest{
		OrderItems: []contract.CreateOrderItemRequest{
			{
				ProductID: uuid.New(),
				Quantity:  1,
				Weight:    &weight,
			},
		},
	})

	require.Len(t, result.OrderItems, 1)
	require.NotNil(t, result.OrderItems[0].Weight)
	require.Equal(t, weight, *result.OrderItems[0].Weight)
}

func TestOrderModelToContractCarriesEarnings(t *testing.T) {
	got := OrderModelToContract(&models.OrderResponse{PointsEarned: 875, CoinsEarned: 3})
	assert.Equal(t, int64(875), got.PointsEarned)
	assert.Equal(t, int64(3), got.CoinsEarned)

	body, err := json.Marshal(OrderModelToContract(&models.OrderResponse{}))
	assert.NoError(t, err)
	assert.Contains(t, string(body), `"points_earned":0`, "present as 0 when nothing was earned")
	assert.Contains(t, string(body), `"coins_earned":0`)
}