Fixed SVDPlusPlusSuite in Maven build.

graphx/src/test/resources/als-test.data

+1,1,5.0
+1,2,1.0
+1,3,5.0
+1,4,1.0
+2,1,5.0
+2,2,1.0
+2,3,5.0
+2,4,1.0
+3,1,1.0
+3,2,5.0
+3,3,1.0
+3,4,5.0
+4,1,1.0
+4,2,5.0
+4,3,1.0
+4,4,5.0

graphx/src/test/scala/org/apache/spark/graphx/lib/SVDPlusPlusSuite.scala

@@ -19,11 +19,7 @@ package org.apache.spark.graphx.lib
 
 import org.scalatest.FunSuite
 
-import org.apache.spark.SparkContext
-import org.apache.spark.SparkContext._
 import org.apache.spark.graphx._
-import org.apache.spark.graphx.util.GraphGenerators
-import org.apache.spark.rdd._
 
 
 class SVDPlusPlusSuite extends FunSuite with LocalSparkContext {
@@ -31,16 +27,16 @@ class SVDPlusPlusSuite extends FunSuite with LocalSparkContext {
   test("Test SVD++ with mean square error on training set") {
     withSpark { sc =>
       val svdppErr = 8.0
-      val edges = sc.textFile("mllib/data/als/test.data").map { line =>
+      val edges = sc.textFile(getClass.getResource("/als-test.data").getFile).map { line =>
         val fields = line.split(",")
         Edge(fields(0).toLong * 2, fields(1).toLong * 2 + 1, fields(2).toDouble)
       }
       val conf = new SVDPlusPlus.Conf(10, 2, 0.0, 5.0, 0.007, 0.007, 0.005, 0.015) // 2 iterations
       var (graph, u) = SVDPlusPlus.run(edges, conf)
       graph.cache()
-      val err = graph.vertices.collect.map{ case (vid, vd) =>
+      val err = graph.vertices.collect().map{ case (vid, vd) =>
         if (vid % 2 == 1) vd._4 else 0.0
-      }.reduce(_ + _) / graph.triplets.collect.size
+      }.reduce(_ + _) / graph.triplets.collect().size
       assert(err <= svdppErr)
     }
   }