IncompatibleClassChangeError：用ScalaCheck和ScalaTest实现类

Question

libraryDependencies ++= Seq(
  "org.scalatest" %% "scalatest" % "2.2.6" % "test",
  "org.scalacheck" %% "scalacheck" % "1.13.0" % "test"
) 

import org.scalatest.PropSpec
import org.scalatest.prop.Checkers

class MyPropSpec extends PropSpec with Checkers {

  property("List.concat") {
    check((a: List[Int], b: List[Int]) => a.size + b.size == (a ::: b).size)
  }
}

DeferredAbortedSuite:
 Exception encountered when attempting to run a suite with class name:      org.scalatest.DeferredAbortedSuite *** ABORTED ***
     java.lang.IncompatibleClassChangeError: Implementing class
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
     at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
     ...
     java.lang.IncompatibleClassChangeError: Implementing class
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
     at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
     ...

我在这里漏掉了什么？

Answer 1

ScalaTest 2.2.6与ScalaCheck 1.13.0不兼容。降级为“Scalacheck”%“1.12.5”会有所帮助。

报告为https://github.com/rickynils/scalacheck/issues/217。该问题以下列决议结束：

ScalaTest的所有当前版本(2.2.6、3.0.0等）都是基于ScalaCheck 1.12.1构建的（请参见https://github.com/ScalaTest/ScalaTest/blob/master/project/ScalaTest.scala#l134)。因此，不能保证您可以简单地将ScalaCheck 1.12.x替换为1.13.y。ScalaCheck只在相同的次要版本系列(1.12.1、1.12.2、1.12.3等）中保持二进制兼容性。