[jira] [Commented] (DAFFODIL-2947) TDML test case rootNS="" doesn't work to specify root element in no namespace

["Mike Beckerle (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DAFFODIL-2947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17892513#comment-17892513 ] 

Mike Beckerle commented on DAFFODIL-2947:
-----------------------------------------

This PR illustrates the bug: https://github.com/DFDLSchemas/envelope-payload/pull/3

> TDML test case rootNS="" doesn't work to specify root element in no namespace
> -----------------------------------------------------------------------------
>
>                 Key: DAFFODIL-2947
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2947
>             Project: Daffodil
>          Issue Type: Bug
>          Components: TDML Runner
>    Affects Versions: 3.9.0
>            Reporter: Mike Beckerle
>            Priority: Major
>
> I have a schema with a "message" element defined as the root element in a no-namespace schema.
>  
> This schema imports another schema (tcpHeader) which defines a "message" element in its own namespace. 
>  
> When I try to run a TDML test, I get this error:
> ```
> [error] Test io.github.dfdlschemas.envelopepayload.TestEnvelopePayload.test_envelopepayload_02 failed: org.apache.daffodil.tdml.TDMLExceptionImpl: (Implementation: daffodil) test does not expect Error diagnostics, but created the following: Schema Definition Error: Root element message is ambiguous. Candidates are List(message in namespace urn:io.github.dfdlschemas.tcpMessage, message in no namespace).
> ```
> This happens regardless of whether the test case contains
> ```
> root="message" rootNS=""
> ```
> or just 
> ```
> root="message" 
> ```
> or no root specified as an attribute at all. 
>  



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