Overall coverage decreased.

[ppllaxxa]

Hello,

We just updated our project:

1. scala 2.12 -> 2.13
2. java 1.8 -> 17
3. sbt-jacoco 3.1.0 -> 3.4.0
4. sbt 1,5 -> 1.10.11

Our overall coverage descreased from 72% to 63%, Coverage on lines remains the same. I understood that new jacoco version has more accurate algorythm to calculate coverage (brnaches). But we also figured out that now it is not filtering out:

• "synthetic methods from Scala case classes"
• "Plain getters and setters"

Which should be filtered out based on JaCoCo wiki - https://github.com/jacoco/jacoco/wiki/FilteringOptions

Could you please suggest what is wrong here? Maybe we should run 'jacoco' command with some flags?

[ppllaxxa]

I just realized that filtering of "synthetic methods from Scala case classes" is implemented in sbt-jacoco and not in JaCoCo itself.
Looks like there were some changes between 3.1.0 and 3.4.0 which disabled filtering.
I thought maybe there were some changes in resulted bytecode (because of Java and Scala upgrade) and tried sbt-jacoco 3.4.0 with our code before the upgrade:

1. scala 2.12
2. java 1.8
3. sbt-jacoco 3.4.0
4. sbt 1.5

But results are the same.

So it is still unclear why with upgrad of sbt-jacoco it is not filtering

1. "synthetic methods from Scala case classes"
2. "Plain getters and setters"