feat: create structure for the project and first problem

tests/test_join_pictures_with_quantity_endpoint.py

@@ -0,0 +1,60 @@
+import unittest
+
+from fastapi.testclient import TestClient
+
+from app.main import create_app
+
+
+class JoinPicturesWithQuantityEndpointTest(unittest.TestCase):
+    def setUp(self) -> None:
+        self.client = TestClient(create_app())
+
+    def test_creates_problem(self) -> None:
+        response = self.client.post(
+            "/math/1_grade/join_pictures_with_quantity",
+            json={
+                "available_pictures": [
+                    {
+                        "id": f"picture-{index}",
+                        "name": f"Picture {index}",
+                        "image_path": f"/images/{index}.png",
+                    }
+                    for index in range(10)
+                ],
+                "seed": 1,
+            },
+        )
+
+        self.assertEqual(response.status_code, 200)
+        problem = response.json()
+        self.assertEqual(
+            problem["instructions"],
+            "Cuenta las imágenes y une cada grupo con el número correcto.",
+        )
+        self.assertEqual(len(problem["left_containers"]), 5)
+        self.assertEqual(len(problem["number_cards"]), 5)
+        self.assertEqual(len(problem["right_containers"]), 5)
+
+    def test_returns_bad_request_for_too_few_pictures(self) -> None:
+        response = self.client.post(
+            "/math/1_grade/join_pictures_with_quantity",
+            json={
+                "available_pictures": [
+                    {
+                        "id": "picture-1",
+                        "name": "Picture 1",
+                        "image_path": "/images/1.png",
+                    }
+                ]
+            },
+        )
+
+        self.assertEqual(response.status_code, 400)
+        self.assertEqual(
+            response.json(),
+            {"detail": "available_pictures must contain at least 10 pictures"},
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()