object scalatest is not a member of package org

Question

I want to write some tests for my toy project in scalatest. As I use sbt I installed scalatest via libraryDependencies += "org.scalatest" %% "scalatest" % "2.0.M5" % "test" in my project root's build.sbt. Then I created test class in src/test/scala:

package parsers

import org.scalatest.FunSuite

class BaseParserSuite extends FunSuite {

    test("test works") {
        val result = 2
        assert(result === 2)
    }
}

I run it via sbt test and it works. But the annoying thing is that on line 3 with import org.scalatest.FunSuite eclipse says:

Multiple markers at this line
    - object scalatest is not a member of package org
    - object scalatest is not a member of package org

The import part is taken from this example. So the general question is: why is it working via sbt and eclipse reports the error? And where is the imported code from org.scalatest.? Or it is not physically downloaded to my computer? And as a guess -- should I add something to .classpah eclipse file?

Answer 1

You should use the sbt elcipse plugin. It generates eclipse project definitions from your sbt build definition so all the libraries needed will be on the class path. See https://github.com/typesafehub/sbteclipse#for-the-impatient

Answer 2

I encountered the same issue and resolved by deleting the project (do not click on the delete the actual files checkbox). And then I imported the "preexisting project in workspace".