测试在命令行上运行,在Scala IDE中失败

当右键单击运行测试类时,Eclipse以失败告终

Caused by: java.lang.NoClassDefFoundError: scala/Product$class
    at org.scalatest.time.Days$.<init>(Units.scala:291)
    at org.scalatest.time.Days$.<clinit>(Units.scala)
    at org.scalatest.time.Span$.<init>(Span.scala:585)
    at org.scalatest.time.Span$.<clinit>(Span.scala)
    at org.scalatest.tools.Runner$.<init>(Runner.scala:779)
    at org.scalatest.tools.Runner$.<clinit>(Runner.scala)
    at org.scalatest.tools.Runner.main(Runner.scala)
    ... 6 more
Caused by: java.lang.ClassNotFoundException: scala.Product$class
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 13 more

sbt test . 库已按中所述进行了更新 java.lang.NoClassDefFoundError: scala/Product$class .

4.7.0-vfinal-2017-09-29T14:34:02Z-Typesafe Coursera's scala course

原因是什么?如何解决?

请求的信息