[DAFFODIL-2635] dfdl:valueLength on child element returns unexpected Result

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.1
• Fix Version/s: 3.3.0
• Component/s: Back End, General
• Assignee: Steve Lawrence
• Reporter: Olabusayo Kilo
• Created: 24/Jan/22 23:24
• Updated: 31/Jan/22 18:47
• Resolved: 26/Jan/22 13:36

Description

dfdl:valueLength returns the incorrect result for a child element. Sometimes it returns the value of the entire containing element (i.e root element), sometimes it just returns the value of the neighbor element. Attached are some files to demonstrate this issue

 

The data in the test correspond to these infosets:

correct_message:

  <exSchema:exSchema_message xmlns:exSchema="urn:exSchema:1.0">
    <framing_header>
      <message_size>7</message_size>
    </framing_header>
    <message>
      <content>620100</content>
    </message>
  </exSchema:exSchema_message> 

 
msg_size_smaller_than_file_size:

  <exSchema:exSchema_message xmlns:exSchema="urn:exSchema:1.0">
    <framing_header>
      <message_size>4</message_size>
    </framing_header>
    <message>
      <content>620100</content>
    </message>
  </exSchema:exSchema_message> 

The first TDML fails with this message:

Content size (7) and the difference of message_size and framing_header size (3) should be equal

The second:

Content size (4) and the difference of message_size and framing_header size (0) should be equal

The first should not fail, and the 2nd should fail on a "Left over data" error. Commenting out the assertion annotation will show 2 passing tests.