Scalatest with eclipse shows errors while using Matchers

Question

I have an eclipse scala project which uses maven. Eclipse plugins for ScalaIDE and Scalatest are installed. I have tests like:

    import org.scalatest._

    class ExampleSpec extends FlatSpec with Matchers {
        feature("Feature A Test") {
            scenario("Foo scenario 1") {
              val a = FooClass().getResult()
              a.count shouldBe 1  // IDE shows error: value shouldBe is not a member of Long
              a(0).getString(0) shouldBe "FOO"  // IDE shows error: value shouldBe is not a member of String
            }
        }
    }

The maven compilation and the tests run fine, but in eclipse when I open this file, I see an error in eclipse wherever I am using a Matcher as mentioned in the comments above. Eg.

value shouldBe is not a member of Long

What am I missing? A scala test file shows hundreds of problems.

How did you imported project into IDE? Is scalatest visible in "Java Build Path" -> "Libraries" -> "Maven container (or whatever it's called)"? Is Scala version in "Scala compiler" -> "Scala installation" the same as the one declared in POM? — MirMasej
It is indeed present under "Java build path - libraries- maven dependencies- scalatest". Yes Scala version is the same in both the places. — rgamber
I am using MyClass extends FeatureSpec with BeforeAndAfterAll with Matchers. What do you mean by "mixed in matchers", not sure I understand by looking at the link? — rgamber
Update: I am using MyClass extends FeatureSpec with BeforeAndAfterAll with Matchers with the import org.scalatest.Matchers. I am not using import Matchers._. — rgamber

MirMasej MirMasej · Accepted Answer · 2017-03-18T08:12:10

After adding the following dummy code:

case class Bar() {
    def count = Array(Bar())
    def getString(x: Int) = Array("aqq")
    def apply[T](x: Int) = this
}
case class FooClass() {
   def getResult() = Bar()
}

and changing FlatSpec to FeatureSpec as this is the syntax you are using in your ExampleSpec, the code compiles without any issues.

If it's still not the case for you I can suggest creating simple build.sbt and generating project with Eclipse sbt plugin.

Scalatest with eclipse shows errors while using Matchers

2 Answers