fix(app): serialize cpu and gpu request to number (#1103)

renku_notebooks/api/schemas/custom_fields.py

@@ -20,7 +20,7 @@ def _serialize(self, value, attr, obj, **kwargs):
             raise ValidationError(
                 "Invalid value during serialization, must be greater than zero."
             )
-        return str(value)
+        return value
 
     def _deserialize(self, value, attr, data, **kwargs):
         """Always deserialize to fractional cores"""
@@ -135,7 +135,7 @@ def _serialize(self, value, attr, obj, **kwargs):
                 "Invalid value during GPU amount serialization, "
                 f"must be greater than or equal to zero, got {value}."
             )
-        return str(value)
+        return value
 
     def _deserialize(self, value, attr, data, **kwargs):
         """Always deserialize to whole GPUs as integer."""

tests/unit/test_custom_fields.py

@@ -21,10 +21,10 @@ def test_cpu_field_invalid_deserialize(test_input):
 @pytest.mark.parametrize(
     "test_input,expected_value",
     [
-        ({"cpu": 0.1}, "0.1"),
-        ({"cpu": 1}, "1"),
-        ({"cpu": 500}, "500"),
-        ({"cpu": 1000}, "1000"),
+        ({"cpu": 0.1}, 0.1),
+        ({"cpu": 1}, 1),
+        ({"cpu": 500}, 500),
+        ({"cpu": 1000}, 1000),
     ],
 )
 def test_cpu_field_valid_serialize(test_input, expected_value):
@@ -112,8 +112,8 @@ def test_gpu_field_invalid_deserialize(test_input):
 @pytest.mark.parametrize(
     "test_input,expected_value",
     [
-        ({"gpu": 1}, "1"),
-        ({"gpu": 2}, "2"),
+        ({"gpu": 1}, 1),
+        ({"gpu": 2}, 2),
     ],
 )
 def test_gpu_field_valid_serialize(test_input, expected_value):