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https://issues.apache.org/jira/browse/DERBY-5851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13414427#comment-13414427
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Bryan Pendleton commented on DERBY-5851:
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As one more way to confirm that the problem is directly related to methods
which exit by
throwing exceptions, why don't you try this:
1) Change one of those PreparedStatement40 methods so that instead of throwing
an
exception, it just prints a message to the screen and returns normally. Also
put a print
message in the LogicalPreparedStatement40 method that calls it
2) Run the PreparedstatementTest. It should fail, because it expects the method
to throw
an exception. But it should show that both print statements are printed to the
screen.
3) Check the code coverage report. Now it should show that the method is fully
covered,
in BOTH PreparedStatement40 and LogicalPreparedStatement40
> Inconsistent code coverage shown for LogicalPreparedStatement40
> ---------------------------------------------------------------
>
> Key: DERBY-5851
> URL: https://issues.apache.org/jira/browse/DERBY-5851
> Project: Derby
> Issue Type: Bug
> Reporter: Mohamed Nufail
> Assignee: Mohamed Nufail
> Priority: Minor
> Attachments: derby-5851-CPdecorator.patch
>
>
> I tried running
> org.apache.derbyTesting.functionTests.tests.jdbc4.PreparedStatementTest with
> a connectionCPDecorator in a JDBC4 environment. So this should actually run
> the test with LogicalPreparedStatement40 statements.
> But in code coverage report methods such as setNClob show no coverage in
> LogicalPreparedStatement40 class. But in PreparedStatement40 class all these
> methods are shown as covered. Actually those method calls should go to
> PreparedStatement40 through LogicalPreparedStatement40. But it is not shown
> in emma code coverage report.
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