diff --git a/tests_integration/tests/spool/test_get.py b/tests_integration/tests/spool/test_get.py
index 6a823be..f75eee3 100644
--- a/tests_integration/tests/spool/test_get.py
+++ b/tests_integration/tests/spool/test_get.py
@@ -3,6 +3,7 @@
 from typing import Any
 
 import httpx
+import pytest
 
 from ..conftest import URL
 
@@ -46,6 +47,94 @@ def test_get_spool(random_filament: dict[str, Any]):
     httpx.delete(f"{URL}/api/v1/spool/{spool['id']}").raise_for_status()
 
 
+def test_get_spool_default_weights(random_filament: dict[str, Any]):
+    """Test getting a spool from the database."""
+    # Setup
+    first_used = "2023-01-01T00:00:00"
+    last_used = "2023-01-02T00:00:00"
+    remaining_weight = 750
+    location = "The Pantry"
+    lot_nr = "123456789"
+    comment = "abcdefghåäö"
+    price = 25
+    archived = True
+    result = httpx.post(
+        f"{URL}/api/v1/spool",
+        json={
+            "first_used": first_used,
+            "last_used": last_used,
+            "filament_id": random_filament["id"],
+            "remaining_weight": remaining_weight,
+            "location": location,
+            "lot_nr": lot_nr,
+            "comment": comment,
+            "price": price,
+            "archived": archived,
+        },
+    )
+    result.raise_for_status()
+    spool = result.json()
+
+    # Execute
+    result = httpx.get(f"{URL}/api/v1/spool/{spool['id']}")
+    result.raise_for_status()
+
+    result_spool = result.json()
+
+    # Verify
+    assert result_spool == spool
+    assert result_spool["initial_weight"] == pytest.approx(random_filament["weight"] + random_filament["spool_weight"])
+    assert result_spool["empty_weight"] == pytest.approx(random_filament["spool_weight"])
+
+    # Clean up
+    httpx.delete(f"{URL}/api/v1/spool/{spool['id']}").raise_for_status()
+
+
+def test_get_spool_weights(random_filament: dict[str, Any]):
+    """Test getting a spool from the database."""
+    # Setup
+    first_used = "2023-01-01T00:00:00"
+    last_used = "2023-01-02T00:00:00"
+    remaining_weight = 750
+    initial_weight = 1255
+    empty_weight = 246
+    location = "The Pantry"
+    lot_nr = "123456789"
+    comment = "abcdefghåäö"
+    price = 25
+    archived = True
+    result = httpx.post(
+        f"{URL}/api/v1/spool",
+        json={
+            "first_used": first_used,
+            "last_used": last_used,
+            "filament_id": random_filament["id"],
+            "remaining_weight": remaining_weight,
+            "initial_weight": initial_weight,
+            "empty_weight": empty_weight,
+            "location": location,
+            "lot_nr": lot_nr,
+            "comment": comment,
+            "price": price,
+            "archived": archived,
+        },
+    )
+    result.raise_for_status()
+    spool = result.json()
+
+    # Execute
+    result = httpx.get(f"{URL}/api/v1/spool/{spool['id']}")
+    result.raise_for_status()
+
+    result_spool = result.json()
+
+    # Verify
+    assert result_spool == spool
+
+    # Clean up
+    httpx.delete(f"{URL}/api/v1/spool/{spool['id']}").raise_for_status()
+
+
 def test_get_spool_not_found():
     """Test getting a spool that does not exist."""
     # Execute
diff --git a/tests_integration/tests/spool/test_update.py b/tests_integration/tests/spool/test_update.py
index 33577e9..6822454 100644
--- a/tests_integration/tests/spool/test_update.py
+++ b/tests_integration/tests/spool/test_update.py
@@ -77,6 +77,83 @@ def test_update_spool(random_filament: dict[str, Any]):
     httpx.delete(f"{URL}/api/v1/spool/{spool['id']}").raise_for_status()
 
 
+def test_update_spool_weights(random_filament: dict[str, Any]):
+    """Test updating a spool in the database."""
+    # Setup
+    result = httpx.post(
+        f"{URL}/api/v1/spool",
+        json={
+            "filament_id": random_filament["id"],
+            "remaining_weight": 1000,
+            "initial_weight": 1255,
+            "empty_weight": 246,
+            "location": "The Pantry",
+            "lot_nr": "123456789",
+        },
+    )
+    result.raise_for_status()
+    spool = result.json()
+
+    # Execute
+    first_used = "2023-01-01T12:00:00+02:00"
+    last_used = "2023-01-02T12:00:00+02:00"
+    remaining_weight = 750
+    initial_weight = 1250
+    empty_weight = 245
+    location = "Living Room"
+    lot_nr = "987654321"
+    comment = "abcdefghåäö"
+    archived = True
+    price = 25
+    result = httpx.patch(
+        f"{URL}/api/v1/spool/{spool['id']}",
+        json={
+            "first_used": first_used,
+            "last_used": last_used,
+            "remaining_weight": remaining_weight,
+            "location": location,
+            "lot_nr": lot_nr,
+            "comment": comment,
+            "archived": archived,
+            "price": price,
+            "initial_weight": initial_weight,
+            "empty_weight": empty_weight,
+        },
+    )
+    result.raise_for_status()
+
+    # Verify
+    used_weight = initial_weight - empty_weight - remaining_weight
+    used_length = length_from_weight(
+        weight=used_weight,
+        density=random_filament["density"],
+        diameter=random_filament["diameter"],
+    )
+    remaining_length = length_from_weight(
+        weight=remaining_weight,
+        density=random_filament["density"],
+        diameter=random_filament["diameter"],
+    )
+
+    spool = result.json()
+    assert spool["first_used"] == "2023-01-01T10:00:00Z"
+    assert spool["last_used"] == "2023-01-02T10:00:00Z"
+    assert spool["initial_weight"] == pytest.approx(initial_weight)
+    assert spool["empty_weight"] == pytest.approx(empty_weight)
+    assert spool["remaining_weight"] == pytest.approx(remaining_weight)
+    assert spool["used_weight"] == pytest.approx(used_weight)
+    assert spool["remaining_length"] == pytest.approx(remaining_length)
+    assert spool["used_length"] == pytest.approx(used_length)
+    assert spool["location"] == location
+    assert spool["lot_nr"] == lot_nr
+    assert spool["comment"] == comment
+    assert spool["archived"] == archived
+    assert spool["price"] == price
+
+    # Clean up
+    httpx.delete(f"{URL}/api/v1/spool/{spool['id']}").raise_for_status()
+
+
 def test_update_spool_both_used_and_remaining_weight(random_filament: dict[str, Any]):
     """Test updating a spool in the database."""
     # Setup