Stamatis Zampetakis created CALCITE-5475:
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Summary: Improve test coverage accuracy by aggregating modules
Key: CALCITE-5475
URL: https://issues.apache.org/jira/browse/CALCITE-5475
Project: Calcite
Issue Type: Task
Reporter: Stamatis Zampetakis
Assignee: Stamatis Zampetakis
Currently the test coverage report is computed per module (using
jacocoTestReport task) and upload it to Sonar as is. Considering the modules in
isolation leads to some modules have rather low coverage.
+Example+
For testkit module, Sonar reports only 11% coverage at the moment of submitting
this ticket:
[https://sonarcloud.io/component_measures?metric=coverage&selected=apache_calcite%3Atestkit%2Fsrc%2Fmain&id=apache_calcite]
Some classes such as
[SqlOperatorTest|https://sonarcloud.io/component_measures?metric=coverage&selected=apache_calcite%3Atestkit%2Fsrc%2Fmain%2Fjava%2Forg%2Fapache%2Fcalcite%2Ftest%2FSqlOperatorTest.java&id=apache_calcite]
are as low as 1%.
The testkit module does not have itself many tests covering its own classes
(under src/main) so if we don't consider how it is used by other modules we get
the false impression that it is not sufficiently covered.
The test coverage accuracy can be improved by aggregating the results from all
modules together using the
[jacoco_report_aggregation_plugin|https://docs.gradle.org/current/userguide/jacoco_report_aggregation_plugin.html#jacoco_report_aggregation_plugin].
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