code: def test_validate_schema_grouping_scalar(scalar_grouping_size):
      grouping, size = scalar_grouping_size
      schema = make_schema_with_nones(grouping)
      validate_grouping(grouping, schema)
  
      # Anything is valid as a scalar
      validate_grouping((0,), schema)
      validate_grouping({"a": 0}, schema)
  
imports: from dash.dependencies import Input
  from dash._grouping import flatten_grouping, make_grouping_by_index, grouping_len, map_grouping, make_grouping_by_key, validate_grouping, SchemaTypeValidationError, SchemaLengthValidationError, SchemaKeysValidationError
  from fixtures import scalar_grouping_size, list_grouping_size, dict_grouping_size, mixed_grouping_size
  import string
  import pytest
label_desc: Use image node_id 23 for calling a global function with example usage: test_validate_schema_grouping_scalar(scalar_grouping_size) without return types