Errata

Location 284 gives examples of libraryDependencies in build.sbt. following these (and trying others from StackOverflow and elsewhere), I cannot eradicate the sbt errors generated by the MustMatcherSpec.scala when it tries to resolve and compile the java portion of the code, from:

it("has method for java collections") {
import java.util.{List => JList, ArrayList ⇒ JArrayList,
Map ⇒ JMap, HashMap ⇒ JHashMap}


I get the sbt error (see red error - I've left in the green info to show where it works):

[info] Using all must matchers
[info] - has simple matchers
[info] - has string matchers
[info] - has <, >, <=, >=, === matchers
[info] - has theSameInstanceAs
[info] - has checking floating point imperfections
[info] - has methods for iterable
[info] - has methods for seq
[info] - has methods for traversable
[info] - has methods for map
[trace] Stack trace suppressed: run last test:test for the full output.
[error] Could not run test com.oreilly.testingscala.MustMatcherSpec2: java.lang.NoClassDefFoundError: scala/collection/GenTraversableOnce$class
[error] Error: Total 3, Failed 0, Errors 0, Passed 3
[error] Error during tests:
[error] com.oreilly.testingscala.MustMatcherSpec2
[error] (test:test) sbt.TestsFailedException: Tests unsuccessful

I cannot resolve the ** java.lang.NoClassDefFpoundError: scala/collection/GenTraversableOnce$class ** error, even with changes to build .sbt.

"new Artist("Ozzy", "Osbourne")

won't work with the "should have" assertion in "album" as they refers to two different objects

Update to previous post:
Error removed by updating ScalaTest and changing build.sbt.

this works:

name := "Testing scala"

version := "1.0"

scalaVersion := "2.11.6"

autoScalaLibrary := true

libraryDependencies += "org.scalatest" % "scalatest_2.11" % "2.2.4" % "test"


To be safe, I then issued commands in sbt: clean; reload, update

Compile now does not report the ** java.lang.NoClassDefFoundError **

The paragraph starting "Another concept from the last example that may unfamiliar [sic] is List(): _*
The description of the construct is clear enough, but might be confusing since the example doesn't actually use that construct.

Possibly an earlier iteration of the example declared something like val acts = List(new Artist("Glenn", "Frey"), new Artist("Joe", "Walsh"), new Artist("Randy", "Meisner"), new Artist("Don", "Felder")) and passed it as args: _* to the new Album(...)?