Set javaOptions in Test for Play/SBT

Question

I configured build.sbt for the unit test to use a different Play (2.3.9 for Scala and SBT 0.13.5) configuration via,

javaOptions in Test ++= Seq("-Dconfig.file=/home/kitty/acme/test/resources/test-application.conf")

Play did not pick up test-application.conf and used application.conf in conf instead. AFAIK, there is no scalaOption in this case. However, if I include -Dconfig.file in the command line, it works fine,

sbt test -Dconfig.file=/home/kitty/acme/test/resources/test-application.conf

How do I fix this? Thanks.

Answer 1

javaOptions in Test ++= Seq("-Dconfig.file=/home/kitty/acme/test/resources/test-application.conf") didn't work because my fork in Test was false. Therefore, set fork to true and it will work. -Dconfig.resource like -Dconfig.file works the same way too. SBT will not pick it up if it is not forked. Strictly, javaOptions only work with fork is true as mentioned here

Answer 2

you're almost there, you can force JVM options like this

javaOptions in Test ++= Seq("-Dconfig.file=/home/kitty/acme/test/resources/test-application.conf")

config.file also takes a relative path e.g conf/test-application.conf