Eric Pederson created SUREFIRE-1068:
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             Summary: forkNumber in systemPropertyVariables requires prefix
                 Key: SUREFIRE-1068
                 URL: https://jira.codehaus.org/browse/SUREFIRE-1068
             Project: Maven Surefire
          Issue Type: Bug
          Components: Maven Surefire Plugin
    Affects Versions: 2.16
            Reporter: Eric Pederson
            Priority: Minor


If {{${surefire.forkNumber} }} is used alone in a {{systemPropertyVariable}} it 
resolves as null.  Workaround is to prefix the value.

For example, this doesn't work (the {{surefire.forkNumber}} system property 
does not exist).
{code:xml}
  <systemPropertyVariables>
    <surefire.forkNumber>${surefire.forkNumber}</surefire.forkNumber>
  </systemPropertyVariables>
{code}

But this does:
{code:xml}
  <systemPropertyVariables>
    <surefire.forkNumber>0${surefire.forkNumber}</surefire.forkNumber>
  </systemPropertyVariables>
{code}

(note the leading *0*)



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