Published version 3.4.0 does not work

[kammoh]

Running any of the examples (e.g. https://github.com/vagmcs/Optimus/blob/master/docs/mixed_integer.md) results in an exception:

Exception in thread "main" java.io.FileNotFoundException: /home/vagmcs/Usr/work/dev/Optimus/core/target/scala-2.13/scoverage-data/scoverage.measurements.1 (No such file or directory)
	at java.base/java.io.FileOutputStream.open0(Native Method)
	at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298)
	at java.base/java.io.FileOutputStream.<init>(FileOutputStream.java:237)
	at java.base/java.io.FileWriter.<init>(FileWriter.java:113)
	at scoverage.Invoker$.$anonfun$invoked$1(Invoker.scala:55)
Invoker.scala:55
	at scala.collection.mutable.HashMap.getOrElseUpdate(HashMap.scala:454)
HashMap.scala:454
	at scoverage.Invoker$.invoked(Invoker.scala:55)
Invoker.scala:55
	at optimus.optimization.MPModel.<init>(MPModel.scala:36)
MPModel.scala:36

localPublished version with coverageEnabled := false works as expected.

Seems to be related to:
scoverage/sbt-scoverage#84 and scoverage/sbt-scoverage#306

[vagmcs]

Hello @kammoh,

What version of Java and Scala do you use?

[kammoh]

Scala 2.13.5, OpenJDK 11

[vagmcs]

Hi @kammoh,

There is an import missing from the MIP example in the documentation. You have to add,

import optimus.optimization.model.MPIntVar

Apart from that it works fine for me. If this is not the problem in your case you have to provide me with more details. Maybe the code you are trying to run and the way you run it, e.g., from some IDE or SBT console.

[kammoh]

Hi @vagmcs ,
Please have a look at the reported error message and the referenced sbt-coverage issues. This has nothing to do with the missing import!
You can see the error on Scastie:
https://scastie.scala-lang.org/hnymyJJ4SNqnrfpRT5Zy2Q

Upgrading sbt-coverage could be a thing to try, but as it seems not to be resolved upstream, you need to disable sbt-coverate during publish (coverageEnabled := false).

[kammoh]

Maybe the reason you're not observing this issue on your local machine is that your build-time coverage file (/home/vagmcs/Usr/work/dev/Optimus/core/target/scala-2.13/scoverage-data/scoverage.measurements.4463) actually exists there?

[vagmcs]

Hello @kammoh,

It seems there is indeed a problem with the coverage option. I released a patched version 3.4.1. Can you please try it out?

[kammoh]

Yes, it solves the issue! Thank you for the quick fix!