class_docstr: Tests for ``FolderMapView``
class_docstr_tok: ["Tests","for","``","FolderMapView","``"]
docstr: Test that a ValueError is raised when a parameter is not
  provided, and it doesn't have a default.
docstr_tok: ["Test","that","a","ValueError","is","raised","when","a","parameter","is","not","provided",",","and","it","does","n't","have","a","default","."]
code: def test_find_missing_arg_no_default(self):
      """Test that a ValueError is raised when a parameter is not
      provided, and it doesn't have a default."""
      with pytest.raises(
          ValueError,
          match="No default available for parameter 'molname'",
      ):
          FolderMapView(FOLDERMAP).find("qchem")
  
file_path: pennylane/tests/data/data_manager/test_foldermap.py
imports: import re
  import pytest
  from pennylane.data.data_manager import DEFAULT, FULL, DataPath
  from pennylane.data.data_manager.foldermap import Description, FolderMapView
label_desc: Use image node_id 4 for calling the TestFolderMapView obj's underlying member method code with example usage: obj.test_find_missing_arg_no_default() without return types