feat(api): implemented create sale as api endpoint.

tienda_ilusion/don_confiao/tests/test_api.py

@@ -0,0 +1,32 @@
+import json
+from django.urls import reverse
+from rest_framework import status
+from rest_framework.test import APITestCase
+from ..models import Sale, Product, Customer
+
+
+class TestAPI(APITestCase):
+    def setUp(self):
+        self.product = Product.objects.create(
+            name='Panela',
+            price=5000,
+            measuring_unit='UNIT'
+        )
+        self.customer = Customer.objects.create(
+            name='Camilo'
+        )
+
+    def test_create_sale(self):
+        url = '/don_confiao/api/sales/'
+        data = {
+            'customer': self.customer.id,
+            'date': '2024-09-02',
+            'lines': [
+                {'product': self.product.id, 'quantity': 2, 'unit_price': 3000},
+                {'product': self.product.id, 'quantity': 3, 'unit_price': 5000}
+            ],
+        }
+        response = self.client.post(url, data, format='json')
+        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+        self.assertEqual(Sale.objects.count(), 1)
+        self.assertEqual(Sale.objects.all()[0].customer.name, self.customer.name)