Jochen Kemnade created GROOVY-7547:
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             Summary: null values break AssertionRenderer.valueToString
                 Key: GROOVY-7547
                 URL: https://issues.apache.org/jira/browse/GROOVY-7547
             Project: Groovy
          Issue Type: Bug
    Affects Versions: 2.4.4
            Reporter: Jochen Kemnade


While trying to write a test for GROOVY-6958, I got the following trace:
{noformat}
    java.lang.NullPointerException
        at 
org.codehaus.groovy.runtime.powerassert.AssertionRenderer.javaLangObjectToString(AssertionRenderer.java:179)
        at 
org.codehaus.groovy.runtime.powerassert.AssertionRenderer.valueToString(AssertionRenderer.java:166)
        at 
org.codehaus.groovy.runtime.powerassert.AssertionRenderer.renderValues(AssertionRenderer.java:100)
        at 
org.codehaus.groovy.runtime.powerassert.AssertionRenderer.render(AssertionRenderer.java:60)
        at 
org.codehaus.groovy.runtime.powerassert.AssertionRenderer.render(AssertionRenderer.java:54)
        at 
org.codehaus.groovy.runtime.NullObjectTest$_testCategory_closure2.doCall(NullObjectTest.groovy:62)
        at 
org.codehaus.groovy.runtime.NullObjectTest$_testCategory_closure2.doCall(NullObjectTest.groovy)
{noformat}




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