我是 Scala 新手，我正在尝试使用Scala测试。我将其依赖项包含在我的 build.sbt 文件中libraryDependencies++=Seq(
"org.scalatest" % "scalatest_2.11" % "2.1.7" % "test"
)
并刷新了 sbt，现在它出现在我的外部库文件夹中，所以我认为它已正确安装。现在我想做一个测试课。所以我在 src/test/scala 下创建了一个。我使用了 ScalaTest 网站首页的示例，该示例是
import collection.mutable.Stack
import org.scalatest._
class ExampleSpec extends FlatSpec with Matchers {
"A Stack" should "pop values in last-in-first-out order" in {
val stack = new Stack[Int]
stack.push(1)
stack.push(2)
stack.pop() should be (2)
stack.pop() should be (1)
}
it should "throw NoSuchElementException if an empty stack is popped" in {
val emptyStack = new Stack[Int]
a [NoSuchElementException] should be thrownBy {
emptyStack.pop()
}
}
}
但是，当我运行这个类时，我收到错误
Error:scalac: bad symbolic reference. A signature in package.class refers to type compileTimeOnly
in package scala.annotation which is not available.
It may be completely missing from the current classpath, or the version on
the classpath might be incompatible with the version used when compiling package.class.
and also
Error:(4, 27) Reference to class FlatSpec in package scalatest should not have survived past type checking,
it should have been processed and eliminated during expansion of an enclosing macro.
class ExampleSpec extends FlatSpec with Matchers {
^
有人可以告诉我问题是什么吗？看起来它无法识别 ScalaTest。然而它在我的外部库中，IntelliJ 的自动完成功能也表明它在那里。在我真正开始使用 ScalaTest 之前，我是否需要刷新其他内容？
EDIT:
还有当我跑步时test:compile从 sbt 我得到
[error] error while loading package, class file needed by package is missing.
[error] reference value <init>$default$2 of object deprecated refers to nonexisting symbol.
[error] error while loading Matchers, class file needed by Matchers is missing.
[error] reference value <init>$default$2 of object deprecated refers to nonexisting symbol.
[error] error while loading Assertions, class file needed by Assertions is missing.
[error] reference value internal of package scala.reflect.macros refers to nonexisting symbol.
[error] error while loading AbstractSuite, class file needed by AbstractSuite is missing.
[error] reference value <init>$default$2 of object deprecated refers to nonexisting symbol.
[error] error while loading Tolerance, class file needed by Tolerance is missing.
[error] reference value <init>$default$2 of object deprecated refers to nonexisting symbol.
[error] error while loading BeWord, class file needed by BeWord is missing.
[error] reference value <init>$default$2 of object deprecated refers to nonexisting symbol.
[error] error while loading ResultOfNotWordForAny, class file needed by ResultOfNotWordForAny is missing.
[error] reference value <init>$default$2 of object deprecated refers to nonexisting symbol.
[error] error while loading NotWord, class file needed by NotWord is missing.
[error] reference value <init>$default$2 of object deprecated refers to nonexisting symbol.
[error] 8 errors found
[error] (test:compile) Compilation failed
