在多项目Build.sbt中保存库依赖项

Question

I'm trying to write a concise multi project Build.sbt, so I tried to put all library dependencies in root project and then make others depends on it. My Build.sbt looks like the following:

object KataBuild extends Build {

        lazy val fizzBuzz = Project(
            id = "fizzBuzz", 
            base = file("fizzBuzz"),
            settings = Project.defaultSettings ++ Seq(
                name := "fizzBuzz",
                version := "1.0",
                scalaVersion := "2.10.3"
            )
        )

        lazy val kata = Project(
            id = "scala-kata", 
            base = file("."),
            settings = Project.defaultSettings ++ Seq(
                name := "scala-kata",
                version := "1.0",
                scalaVersion := "2.10.3",
                libraryDependencies ++= Seq(
                    "org.scalatest" %% "scalatest" % "2.1.0" % "test"
                )
            )
        ) aggregate(fizzBuzz)

        fizzBuzz dependsOn(kata)

}

But running test from the main project (scala-kata) fails to build test for fizzBuzz. What am I missing?

Answer 1

Your question is similar to this one . In short, fizzBuzz.dependsOn(kata) means that its compile configuration depends on the kata's compile configuration, but you want to link the test configurations.

The 'Per-configuration classpath dependencies' section of the sbt docs show you how you can make a test->test dependency instead.

---

However, if you are not going to use kata 's test sources but are just looking for a way to include Scala-Test in fizzBuzz , just add it explicitly to fizzBuzz 's library dependencies, too. You can define a helper value

lazy val scalaTest = "org.scalatest" %% "scalatest" % "2.1.0" % "test"

Then you can add it to be sub project's library dependencies ( libraryDependencies += scalaTest ).