Error on scalatest compilation in IDEA - scala

Question

I am trying to compile Scala project which contains scalatest.
It compiles normal on sbt
sbt
> compile
> test:compile
, but when I am trying to build it with IDEA, it shows the following error:
Error:(37, 11) exception during macro expansion:
java.lang.NoSuchMethodError: org.scalactic.BooleanMacro.genMacro(Lscala/reflect/api/Exprs$Expr;Ljava/lang/String;Lscala/reflect/api/Exprs$Expr;)Lscala/reflect/api/Exprs$Expr;
at org.scalatest.AssertionsMacro$.assert(AssertionsMacro.scala:34)
assert((ElementMeasures.baseElementDistance(mEl1, mEl2) - 0.33333).abs < 0.001)
^
for each assert function in test.
build.sbt file contains following:
name := "ner-scala"
organization := "ml.generall"
version := "1.0-SNAPSHOT"
scalaVersion := "2.11.8"
libraryDependencies += "org.scalactic" %% "scalactic" % "3.0.0"
libraryDependencies += "org.scalatest" %% "scalatest" % "3.0.0" % "test"
...

Answer 1

It may also mean that you have more than one versions of scalatest registered. I came into pretty same issue with compile-time error on assert

Answer 2

I just ran into the same problem and as Alexey described (he should get the upvote but I don't have enough reputation to upvote or comment - thank you Alexey), it seems that it was caused by having multiple versions of scalatest in my project. I was able to fix it by specifically excluding the older scalatest from the library that brought it in (and please note that the exclude needs to specify the scala binary version, e.g. _2.11 etc.!):
...exclude("org.scalatest", "scalatest_2.11")
There had also been a warning in the event log before the exclude:
SBT project import
[warn] Multiple dependencies with the same organization/name but different versions.
[warn] * org.scalatest:scalatest_2.11:(2.2.6, 3.0.1)

Answer 3

I think your IntelliJ is missing library scalatest
from IntelliJ, go to Project Structure -> Project Settings -> Libraries -> + symbol -> From Maven -> search for scalatest with correct version
after adding scalatest library for IntelliJ, assert error should disappear.
This is not a guaranteed solution, just give it a try :)

Answer 4

Sometimes, there are incompatibilities between how Intellij IDEA compiles scala, versus how sbt compiles scala. What you can try doing, is ask the IDEA to compile as sbt, and not as it does by default.
In the sbt view, you need to open the sbt settings.
Once it is opened you can enable the "builds" checkbox. As stated by IDEA, it is recomended for sbt build configurations that cause compilation nin IDEA to not work correctly.

Answer 5

Excluding just the org.scalatest group did not work for me. On analyzing my mvn dependencies I had to exclude the scalactic_{scala_binary_version} group as well.
<exclusion>
<artifactId>scalactic_2.11</artifactId>
<groupId>org.scalactic</groupId>
</exclusion>

Answer 6

I had a similar issue, but excluding org.scalatest did not fix it.
Instead, I excluded org.scalactic:
"com.stackoverflow" %% "troublesome-library" % "1.0.420" excludeAll(ExclusionRule(organization="org.scalactic"))