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Type: Bug
Resolution: Fixed
Priority: Major
Component/s: coverage-plugin
Labels:
None
Environment:
coverage plugin: 1.15.0
Container: jenkins/inbound-agent:3248.v65ecb_254c298-1

Similar Issues:

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Released As:
https://github.com/jenkinsci/coverage-plugin/releases/tag/v1.16.0

My test runner creates multiple cobertura output files, one for each assembly.

I tried to shrink down the cobertura output as much as I could while still getting the error.
Here are two cobertura outputs. They now look similar because I truncated all the differences. One comes from AssemblyA and one from AssemblyB.

This scenario results in the error below.

If I go ahead and remove the class element for NamespaceA or NamespaceB the plugin is happy. If both are included it crashes.
If I rename MyClass to MyClass1 for NamespaceA the plugin works as expected.

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<!DOCTYPE coverage SYSTEM "http://cobertura.sourceforge.net/xml/coverage-04.dtd">
<coverage line-rate="0.02" branch-rate="0.02" lines-covered="417" lines-valid="18516" branches-covered="112" branches-valid="5820" complexity="19" version="8.8.0.0" timestamp="1715002690">
  <sources>
    <source>D:\</source>
  </sources>
  <packages>
    <package name="Domain" line-rate="0.04" branch-rate="0.03" complexity="1.95">
      <classes>
        <class name="Domain.NamespaceA.MyClass" filename="/src/Domain/NamespaceA/MyClass.cs" line-rate="0" branch-rate="0" complexity="4">
          <methods>
            <method name="Method" signature="System.Void ()" line-rate="0" branch-rate="0" complexity="4">
              <lines>
                <line number="17" hits="0" branch="true" condition-coverage="0% (0/6)">
                  <conditions>
                    <condition number="3339" type="jump" coverage="0%" />
                  </conditions>
                </line>
              </lines>
            </method>
          </methods>
          <lines>
            <line number="17" hits="0" branch="true" condition-coverage="0% (0/6)">
              <conditions>
                <condition number="3339" type="jump" coverage="0%" />
              </conditions>
            </line>
          </lines>
        </class>
        <class name="Domain.NamespaceB.MyClass" filename="/src/Domain/NamespaceB/MyClass.cs" line-rate="1" branch-rate="0.6" complexity="3">
          <methods>
            <method name="Method" signature="System.Void ()" line-rate="1" branch-rate="0.5" complexity="3">
              <lines>
                <line number="17" hits="2" branch="true" condition-coverage="50% (2/4)">
                  <conditions>
                    <condition number="1779" type="jump" coverage="50%" />
                  </conditions>
                </line>
              </lines>
            </method>
          </methods>
          <lines>
            <line number="17" hits="2" branch="true" condition-coverage="50% (2/4)">
              <conditions>
                <condition number="1779" type="jump" coverage="50%" />
              </conditions>
            </line>
          </lines>
        </class>
      </classes>
    </package>
  </packages>
</coverage>

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<!DOCTYPE coverage SYSTEM "http://cobertura.sourceforge.net/xml/coverage-04.dtd">
<coverage line-rate="0" branch-rate="0" lines-covered="93" lines-valid="36985" branches-covered="18" branches-valid="11402" complexity="61" version="8.8.0.0" timestamp="1718963829">
  <sources>
    <source>D:\</source>
  </sources>
  <packages>
    <package name="Domain" line-rate="0" branch-rate="0" complexity="1.95">
      <classes>
        <class name="Domain.NamespaceA.MyClass" filename="/src/Domain/NamespaceA/MyClass.cs" line-rate="0" branch-rate="0" complexity="4">
          <methods>
            <method name="Validate" signature="System.Void ()" line-rate="0" branch-rate="0" complexity="4">
              <lines>
                <line number="17" hits="0" branch="true" condition-coverage="0% (0/6)">
                  <conditions>
                    <condition number="3339" type="jump" coverage="0%" />
                  </conditions>
                </line>
              </lines>
            </method>
          </methods>
          <lines>
            <line number="17" hits="0" branch="true" condition-coverage="0% (0/6)">
              <conditions>
                <condition number="3339" type="jump" coverage="0%" />
              </conditions>
            </line>
          </lines>
        </class>
        <class name="Domain.NamespaceB.MyClass" filename="/src/Domain/NamespaceB/MyClass.cs" line-rate="0" branch-rate="0" complexity="3">
          <methods>
            <method name="Validate" signature="System.Void ()" line-rate="0" branch-rate="0" complexity="3">
              <lines>
                <line number="17" hits="0" branch="true" condition-coverage="0% (0/4)">
                  <conditions>
                    <condition number="1779" type="jump" coverage="0%" />
                  </conditions>
                </line>
              </lines>
            </method>
          </methods>
          <lines>
            <line number="17" hits="0" branch="true" condition-coverage="0% (0/4)">
              <conditions>
                <condition number="1779" type="jump" coverage="0%" />
              </conditions>
            </line>
          </lines>
        </class>
      </classes>
    </package>
  </packages>
</coverage>

This will result in this error:

java.lang.IllegalArgumentException: Cannot merge coverage information for line 17 in [FILE] MyClass.cs <0>
	at edu.hm.hafner.coverage.FileNode.mergeCounters(FileNode.java:167)
	at edu.hm.hafner.coverage.FileNode.mergeNode(FileNode.java:139)
	at edu.hm.hafner.coverage.Node.lambda$mergeNode$13(Node.java:769)
	at java.base/java.util.ArrayList.forEach(Unknown Source)
	at edu.hm.hafner.coverage.Node.mergeNode(Node.java:765)
	at edu.hm.hafner.coverage.Node.lambda$mergeNode$13(Node.java:769)
	at java.base/java.util.ArrayList.forEach(Unknown Source)
	at edu.hm.hafner.coverage.Node.mergeNode(Node.java:765)
	at edu.hm.hafner.coverage.Node.merge(Node.java:744)
	at java.base/java.util.stream.ReduceOps$2ReducingSink.accept(Unknown Source)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown Source)
	at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
	at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
	at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)
	at java.base/java.util.stream.ReferencePipeline.reduce(Unknown Source)
	at edu.hm.hafner.coverage.Node.merge(Node.java:711)
	at io.jenkins.plugins.coverage.metrics.steps.CoverageRecorder.aggregateResults(CoverageRecorder.java:547)
	at io.jenkins.plugins.coverage.metrics.steps.CoverageRecorder.perform(CoverageRecorder.java:417)
	at io.jenkins.plugins.coverage.metrics.steps.CoverageRecorder.perform(CoverageRecorder.java:406)
	at io.jenkins.plugins.coverage.metrics.steps.CoverageStep$Execution.run(CoverageStep.java:365)
	at io.jenkins.plugins.coverage.metrics.steps.CoverageStep$Execution.run(CoverageStep.java:333)
	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

links to

PR #117

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