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| <h1>FAQ</h1> |
| |
| <p> |
| This is a compilation of questions that have been asked by JaCoCo users |
| before. |
| </p> |
| |
| <h3>Does JaCoCo have a plug-in for [Eclipse|Netbeans|Whatever...]?</h3> |
| <p> |
| See <a href="integrations.html">this list</a> for current integrations with |
| various tools. |
| <p> |
| |
| <h3>Why do I get the error "Can't add different class with same name"?</h3> |
| <p> |
| For coverage report generation all classes within a group must have unique |
| names. You get this error during report generation if JaCoCo is supplied with |
| multiple different class files with the same name. To fix this remove those |
| duplicate classes or create separate reports or report groups for each version. |
| <p> |
| |
| <h3>Why does the coverage report not show line coverage figures?</h3> |
| <p> |
| JaCoCo is based on class files analysis. To calculate line coverage the class |
| files must contain line number information. For this class files must be |
| compiled with debug information. |
| </p> |
| |
| <h3>Why does the coverage report coverage report not show highlighted source code?</h3> |
| <p> |
| Make sure the following prerequisites are fulfilled to get source code |
| highlighting in JaCoCo coverage reports: |
| </p> |
| <ul> |
| <li>Class files must be compiled with debug information to contain line numbers.</li> |
| <li>Source files must be properly supplied at report generation time. I.e. |
| specified source folders must be the direct parent of the folders that |
| define the Java packages.</li> |
| </ul> |
| |
| <h3>Why does a class show as not covered although it has been executed?</h3> |
| <p> |
| First make sure execution data has been collected. For this select the |
| <i>Sessions</i> link on the top right corner of the HTML report and check |
| whether the class in question is listed. If it is listed but not linked the |
| class at execution time is a different class file. Make sure you're using the |
| exact same class file at runtime as for report generation. |
| </p> |
| |
| <h3>Why are Java interface types not shown in the coverage reports?</h3> |
| <p> |
| Java interface methods do not contain code, therefore code coverage cannot |
| be evaluated. Indeed code coverage is recorded for the implementation classes. |
| The same applies to abstract methods in abstract classes. |
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