I've read that we can configure JaCoCo to fail the maven build if the test code coverage is below a predefined threshold but how about if we want to fail the build if the test code coverage drops from the previous test code coverage?
1 Answers
The Code Coverage API Jenkins plugin comes with a REST API which includes:
Coverage result of last build:
…/{buildNumber}/coverage/…/last/result/api/\{json|xml\}?depth={number}
The idea would be to define a step for storing that value in a variable, and then use said variable in limit configuration:
<rules>
<rule implementation="org.jacoco.maven.RuleConfiguration">
<element>BUNDLE</element>
<limits>
<limit implementation="org.jacoco.report.check.Limit">
<counter>INSTRUCTION</counter>
<value>COVEREDRATIO</value>
<minimum>${env.LAST_BULD_COVERAGE}</minimum>
</limit>
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