[SPARK-3873][TESTS] Import ordering fixes.

Author: Marcelo Vanzin <vanzin@cloudera.com>

Closes #10582 from vanzin/SPARK-3873-tests.

47 files changed, 58 insertions, 62 deletions

diff --git a/mllib/src/test/scala/org/apache/spark/ml/classification/LogisticRegressionSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/classification/LogisticRegressionSuite.scala
index 1087afb0cd..ff0d0ff771 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/classification/LogisticRegressionSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/classification/LogisticRegressionSuite.scala
@@ -23,7 +23,7 @@ import scala.util.Random
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.ml.feature.Instance
 import org.apache.spark.ml.param.ParamsSuite
-import org.apache.spark.ml.util.{Identifiable, DefaultReadWriteTest, MLTestingUtils}
+import org.apache.spark.ml.util.{DefaultReadWriteTest, Identifiable, MLTestingUtils}
 import org.apache.spark.mllib.classification.LogisticRegressionSuite._
 import org.apache.spark.mllib.linalg.{Vector, Vectors}
 import org.apache.spark.mllib.regression.LabeledPoint
diff --git a/mllib/src/test/scala/org/apache/spark/ml/classification/OneVsRestSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/classification/OneVsRestSuite.scala
index 5ea71c5317..d7983f92a3 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/classification/OneVsRestSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/classification/OneVsRestSuite.scala
@@ -21,9 +21,9 @@ import org.apache.spark.SparkFunSuite
 import org.apache.spark.ml.attribute.NominalAttribute
 import org.apache.spark.ml.feature.StringIndexer
 import org.apache.spark.ml.param.{ParamMap, ParamsSuite}
-import org.apache.spark.ml.util.{MLTestingUtils, MetadataUtils}
-import org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS
+import org.apache.spark.ml.util.{MetadataUtils, MLTestingUtils}
 import org.apache.spark.mllib.classification.LogisticRegressionSuite._
+import org.apache.spark.mllib.classification.LogisticRegressionWithLBFGS
 import org.apache.spark.mllib.evaluation.MulticlassMetrics
 import org.apache.spark.mllib.linalg.Vectors
 import org.apache.spark.mllib.regression.LabeledPoint
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/InteractionSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/InteractionSuite.scala
index 932d331b47..0d4e00668d 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/InteractionSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/InteractionSuite.scala
@@ -19,10 +19,10 @@ package org.apache.spark.ml.feature
 
 import scala.collection.mutable.ArrayBuilder
 
-import org.apache.spark.ml.util.DefaultReadWriteTest
 import org.apache.spark.{SparkException, SparkFunSuite}
 import org.apache.spark.ml.attribute._
 import org.apache.spark.ml.param.ParamsSuite
+import org.apache.spark.ml.util.DefaultReadWriteTest
 import org.apache.spark.mllib.linalg.{Vector, Vectors}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.sql.functions.col
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/PCASuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/PCASuite.scala
index 9f6618b929..f372ec5826 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/PCASuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/PCASuite.scala
@@ -20,8 +20,8 @@ package org.apache.spark.ml.feature
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.ml.param.ParamsSuite
 import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
-import org.apache.spark.mllib.linalg.distributed.RowMatrix
 import org.apache.spark.mllib.linalg._
+import org.apache.spark.mllib.linalg.distributed.RowMatrix
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
 import org.apache.spark.sql.Row
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/PolynomialExpansionSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/PolynomialExpansionSuite.scala
index 70892dc571..dfdc5792c6 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/PolynomialExpansionSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/PolynomialExpansionSuite.scala
@@ -17,10 +17,10 @@
 
 package org.apache.spark.ml.feature
 
-import org.apache.spark.ml.param.ParamsSuite
 import org.scalatest.exceptions.TestFailedException
 
 import org.apache.spark.SparkFunSuite
+import org.apache.spark.ml.param.ParamsSuite
 import org.apache.spark.ml.util.DefaultReadWriteTest
 import org.apache.spark.mllib.linalg.{DenseVector, SparseVector, Vector, Vectors}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/QuantileDiscretizerSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/QuantileDiscretizerSuite.scala
index 3a4f6d235a..722f1abde4 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/QuantileDiscretizerSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/QuantileDiscretizerSuite.scala
@@ -17,11 +17,11 @@
 
 package org.apache.spark.ml.feature
 
+import org.apache.spark.{SparkContext, SparkFunSuite}
 import org.apache.spark.ml.attribute.{Attribute, NominalAttribute}
 import org.apache.spark.ml.util.DefaultReadWriteTest
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.sql.{Row, SQLContext}
-import org.apache.spark.{SparkContext, SparkFunSuite}
 
 class QuantileDiscretizerSuite
   extends SparkFunSuite with MLlibTestSparkContext with DefaultReadWriteTest {
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/StandardScalerSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/StandardScalerSuite.scala
index 1eae125a52..28631cef79 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/StandardScalerSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/StandardScalerSuite.scala
@@ -17,7 +17,6 @@
 
 package org.apache.spark.ml.feature
 
-
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.ml.param.ParamsSuite
 import org.apache.spark.ml.util.DefaultReadWriteTest
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/StringIndexerSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/StringIndexerSuite.scala
index 749bfac747..5d199ca9b5 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/StringIndexerSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/StringIndexerSuite.scala
@@ -17,7 +17,6 @@
 
 package org.apache.spark.ml.feature
 
-import org.apache.spark.sql.types.{StringType, StructType, StructField, DoubleType}
 import org.apache.spark.{SparkException, SparkFunSuite}
 import org.apache.spark.ml.attribute.{Attribute, NominalAttribute}
 import org.apache.spark.ml.param.ParamsSuite
@@ -25,6 +24,7 @@ import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.sql.Row
 import org.apache.spark.sql.functions.col
+import org.apache.spark.sql.types.{DoubleType, StringType, StructField, StructType}
 
 class StringIndexerSuite
   extends SparkFunSuite with MLlibTestSparkContext with DefaultReadWriteTest {
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/VectorAssemblerSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/VectorAssemblerSuite.scala
index 9c1c00f41a..f7de7c1e93 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/VectorAssemblerSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/VectorAssemblerSuite.scala
@@ -17,10 +17,10 @@
 
 package org.apache.spark.ml.feature
 
-import org.apache.spark.ml.util.DefaultReadWriteTest
 import org.apache.spark.{SparkException, SparkFunSuite}
 import org.apache.spark.ml.attribute.{AttributeGroup, NominalAttribute, NumericAttribute}
 import org.apache.spark.ml.param.ParamsSuite
+import org.apache.spark.ml.util.DefaultReadWriteTest
 import org.apache.spark.mllib.linalg.{DenseVector, SparseVector, Vector, Vectors}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.sql.Row
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/VectorSlicerSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/VectorSlicerSuite.scala
index 8acc3369c4..94191e5df3 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/VectorSlicerSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/VectorSlicerSuite.scala
@@ -23,8 +23,8 @@ import org.apache.spark.ml.param.ParamsSuite
 import org.apache.spark.ml.util.DefaultReadWriteTest
 import org.apache.spark.mllib.linalg.{Vector, Vectors}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
-import org.apache.spark.sql.types.StructType
 import org.apache.spark.sql.{DataFrame, Row}
+import org.apache.spark.sql.types.StructType
 
 class VectorSlicerSuite extends SparkFunSuite with MLlibTestSparkContext with DefaultReadWriteTest {
 
diff --git a/mllib/src/test/scala/org/apache/spark/ml/feature/Word2VecSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/feature/Word2VecSuite.scala
index d561bbbb25..a73b565125 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/feature/Word2VecSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/feature/Word2VecSuite.scala
@@ -20,11 +20,11 @@ package org.apache.spark.ml.feature
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.ml.param.ParamsSuite
 import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
+import org.apache.spark.mllib.feature.{Word2VecModel => OldWord2VecModel}
 import org.apache.spark.mllib.linalg.{Vector, Vectors}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
 import org.apache.spark.sql.{Row, SQLContext}
-import org.apache.spark.mllib.feature.{Word2VecModel => OldWord2VecModel}
 
 class Word2VecSuite extends SparkFunSuite with MLlibTestSparkContext with DefaultReadWriteTest {
 
diff --git a/mllib/src/test/scala/org/apache/spark/ml/impl/TreeTests.scala b/mllib/src/test/scala/org/apache/spark/ml/impl/TreeTests.scala
index 4e2d0e93bd..a808177cb9 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/impl/TreeTests.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/impl/TreeTests.scala
@@ -25,8 +25,7 @@ import org.apache.spark.ml.attribute.{AttributeGroup, NominalAttribute, NumericA
 import org.apache.spark.ml.tree._
 import org.apache.spark.mllib.regression.LabeledPoint
 import org.apache.spark.rdd.RDD
-import org.apache.spark.sql.{SQLContext, DataFrame}
-
+import org.apache.spark.sql.{DataFrame, SQLContext}
 
 private[ml] object TreeTests extends SparkFunSuite {
 
diff --git a/mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala
index 2c3fb84160..ff0d8f5568 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala
@@ -25,7 +25,6 @@ import scala.language.existentials
 
 import com.github.fommil.netlib.BLAS.{getInstance => blas}
 
-import org.apache.spark.util.Utils
 import org.apache.spark.{Logging, SparkException, SparkFunSuite}
 import org.apache.spark.ml.recommendation.ALS._
 import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
@@ -34,7 +33,7 @@ import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
 import org.apache.spark.rdd.RDD
 import org.apache.spark.sql.{DataFrame, Row}
-
+import org.apache.spark.util.Utils
 
 class ALSSuite
   extends SparkFunSuite with MLlibTestSparkContext with DefaultReadWriteTest with Logging {
diff --git a/mllib/src/test/scala/org/apache/spark/ml/regression/DecisionTreeRegressorSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/regression/DecisionTreeRegressorSuite.scala
index 0b39af5543..13165f6701 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/regression/DecisionTreeRegressorSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/regression/DecisionTreeRegressorSuite.scala
@@ -26,8 +26,7 @@ import org.apache.spark.mllib.tree.{DecisionTree => OldDecisionTree,
   DecisionTreeSuite => OldDecisionTreeSuite}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.rdd.RDD
-import org.apache.spark.sql.{Row, DataFrame}
-
+import org.apache.spark.sql.{DataFrame, Row}
 
 class DecisionTreeRegressorSuite extends SparkFunSuite with MLlibTestSparkContext {
 
diff --git a/mllib/src/test/scala/org/apache/spark/ml/regression/LinearRegressionSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/regression/LinearRegressionSuite.scala
index 2f3e703f4c..273c882c2a 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/regression/LinearRegressionSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/regression/LinearRegressionSuite.scala
@@ -23,8 +23,8 @@ import org.apache.spark.SparkFunSuite
 import org.apache.spark.ml.feature.Instance
 import org.apache.spark.ml.param.ParamsSuite
 import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
+import org.apache.spark.mllib.linalg.{DenseVector, Vector, Vectors}
 import org.apache.spark.mllib.regression.LabeledPoint
-import org.apache.spark.mllib.linalg.{Vector, DenseVector, Vectors}
 import org.apache.spark.mllib.util.{LinearDataGenerator, MLlibTestSparkContext}
 import org.apache.spark.mllib.util.TestingUtils._
 import org.apache.spark.sql.{DataFrame, Row}
diff --git a/mllib/src/test/scala/org/apache/spark/ml/tuning/CrossValidatorSuite.scala b/mllib/src/test/scala/org/apache/spark/ml/tuning/CrossValidatorSuite.scala
index d281084f91..56545de14b 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/tuning/CrossValidatorSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/tuning/CrossValidatorSuite.scala
@@ -18,14 +18,14 @@
 package org.apache.spark.ml.tuning
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.ml.feature.HashingTF
-import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
-import org.apache.spark.ml.{Pipeline, Estimator, Model}
-import org.apache.spark.ml.classification.{LogisticRegressionModel, LogisticRegression}
+import org.apache.spark.ml.{Estimator, Model, Pipeline}
+import org.apache.spark.ml.classification.{LogisticRegression, LogisticRegressionModel}
 import org.apache.spark.ml.evaluation.{BinaryClassificationEvaluator, Evaluator, RegressionEvaluator}
-import org.apache.spark.ml.param.{ParamPair, ParamMap}
+import org.apache.spark.ml.feature.HashingTF
+import org.apache.spark.ml.param.{ParamMap, ParamPair}
 import org.apache.spark.ml.param.shared.HasInputCol
 import org.apache.spark.ml.regression.LinearRegression
+import org.apache.spark.ml.util.{DefaultReadWriteTest, MLTestingUtils}
 import org.apache.spark.mllib.classification.LogisticRegressionSuite.generateLogisticInput
 import org.apache.spark.mllib.linalg.Vectors
 import org.apache.spark.mllib.util.{LinearDataGenerator, MLlibTestSparkContext}
diff --git a/mllib/src/test/scala/org/apache/spark/ml/util/DefaultReadWriteTest.scala b/mllib/src/test/scala/org/apache/spark/ml/util/DefaultReadWriteTest.scala
index 84d06b43d6..0aa774b660 100644
--- a/mllib/src/test/scala/org/apache/spark/ml/util/DefaultReadWriteTest.scala
+++ b/mllib/src/test/scala/org/apache/spark/ml/util/DefaultReadWriteTest.scala
@@ -22,7 +22,7 @@ import java.io.{File, IOException}
 import org.scalatest.Suite
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.ml.{Model, Estimator}
+import org.apache.spark.ml.{Estimator, Model}
 import org.apache.spark.ml.param._
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.sql.DataFrame
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/api/python/PythonMLLibAPISuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/api/python/PythonMLLibAPISuite.scala
index 59944416d9..0eb839f20c 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/api/python/PythonMLLibAPISuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/api/python/PythonMLLibAPISuite.scala
@@ -18,9 +18,9 @@
 package org.apache.spark.mllib.api.python
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.linalg.{DenseMatrix, Matrices, Vectors, SparseMatrix}
-import org.apache.spark.mllib.regression.LabeledPoint
+import org.apache.spark.mllib.linalg.{DenseMatrix, Matrices, SparseMatrix, Vectors}
 import org.apache.spark.mllib.recommendation.Rating
+import org.apache.spark.mllib.regression.LabeledPoint
 
 class PythonMLLibAPISuite extends SparkFunSuite {
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/classification/StreamingLogisticRegressionSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/classification/StreamingLogisticRegressionSuite.scala
index d7b291d5a6..bf98bf2f5f 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/classification/StreamingLogisticRegressionSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/classification/StreamingLogisticRegressionSuite.scala
@@ -23,8 +23,8 @@ import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.Vectors
 import org.apache.spark.mllib.regression.LabeledPoint
 import org.apache.spark.mllib.util.TestingUtils._
-import org.apache.spark.streaming.dstream.DStream
 import org.apache.spark.streaming.{StreamingContext, TestSuiteBase}
+import org.apache.spark.streaming.dstream.DStream
 
 class StreamingLogisticRegressionSuite extends SparkFunSuite with TestSuiteBase {
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/clustering/GaussianMixtureSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/clustering/GaussianMixtureSuite.scala
index a72723eb00..fb3bd3f412 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/clustering/GaussianMixtureSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/clustering/GaussianMixtureSuite.scala
@@ -18,7 +18,7 @@
 package org.apache.spark.mllib.clustering
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.linalg.{Vector, Vectors, Matrices}
+import org.apache.spark.mllib.linalg.{Matrices, Vector, Vectors}
 import org.apache.spark.mllib.stat.distribution.MultivariateGaussian
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/clustering/LDASuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/clustering/LDASuite.scala
index 37fb69d68f..faef60e084 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/clustering/LDASuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/clustering/LDASuite.scala
@@ -19,7 +19,7 @@ package org.apache.spark.mllib.clustering
 
 import java.util.{ArrayList => JArrayList}
 
-import breeze.linalg.{DenseMatrix => BDM, argtopk, max, argmax}
+import breeze.linalg.{argmax, argtopk, max, DenseMatrix => BDM}
 
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.graphx.Edge
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/evaluation/RankingMetricsSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/evaluation/RankingMetricsSuite.scala
index c0924a213a..77ec49d005 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/evaluation/RankingMetricsSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/evaluation/RankingMetricsSuite.scala
@@ -18,8 +18,8 @@
 package org.apache.spark.mllib.evaluation
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.util.TestingUtils._
 import org.apache.spark.mllib.util.MLlibTestSparkContext
+import org.apache.spark.mllib.util.TestingUtils._
 
 class RankingMetricsSuite extends SparkFunSuite with MLlibTestSparkContext {
   test("Ranking metrics: map, ndcg") {
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/feature/IDFSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/feature/IDFSuite.scala
index 2116363305..5c938a61ed 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/feature/IDFSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/feature/IDFSuite.scala
@@ -18,7 +18,7 @@
 package org.apache.spark.mllib.feature
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.linalg.{DenseVector, SparseVector, Vectors, Vector}
+import org.apache.spark.mllib.linalg.{DenseVector, SparseVector, Vector, Vectors}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/feature/StandardScalerSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/feature/StandardScalerSuite.scala
index 6ab2fa6770..b4e26b2aeb 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/feature/StandardScalerSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/feature/StandardScalerSuite.scala
@@ -19,9 +19,9 @@ package org.apache.spark.mllib.feature
 
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.{DenseVector, SparseVector, Vector, Vectors}
+import org.apache.spark.mllib.stat.{MultivariateOnlineSummarizer, MultivariateStatisticalSummary}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
-import org.apache.spark.mllib.stat.{MultivariateStatisticalSummary, MultivariateOnlineSummarizer}
 import org.apache.spark.rdd.RDD
 
 class StandardScalerSuite extends SparkFunSuite with MLlibTestSparkContext {
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/feature/Word2VecSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/feature/Word2VecSuite.scala
index 37d01e2876..e74ecc16ee 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/feature/Word2VecSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/feature/Word2VecSuite.scala
@@ -19,7 +19,6 @@ package org.apache.spark.mllib.feature
 
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.util.MLlibTestSparkContext
-
 import org.apache.spark.mllib.util.TestingUtils._
 import org.apache.spark.util.Utils
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/linalg/BLASSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/linalg/BLASSuite.scala
index 96e5ffef7a..80da03cc2e 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/linalg/BLASSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/linalg/BLASSuite.scala
@@ -18,8 +18,8 @@
 package org.apache.spark.mllib.linalg
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.util.TestingUtils._
 import org.apache.spark.mllib.linalg.BLAS._
+import org.apache.spark.mllib.util.TestingUtils._
 
 class BLASSuite extends SparkFunSuite {
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/linalg/BreezeMatrixConversionSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/linalg/BreezeMatrixConversionSuite.scala
index dc04258e41..de2c3c13bd 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/linalg/BreezeMatrixConversionSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/linalg/BreezeMatrixConversionSuite.scala
@@ -17,7 +17,7 @@
 
 package org.apache.spark.mllib.linalg
 
-import breeze.linalg.{DenseMatrix => BDM, CSCMatrix => BSM}
+import breeze.linalg.{CSCMatrix => BSM, DenseMatrix => BDM}
 
 import org.apache.spark.SparkFunSuite
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/linalg/VectorsSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/linalg/VectorsSuite.scala
index f895e2a8e4..832ccc0aac 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/linalg/VectorsSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/linalg/VectorsSuite.scala
@@ -19,7 +19,7 @@ package org.apache.spark.mllib.linalg
 
 import scala.util.Random
 
-import breeze.linalg.{DenseMatrix => BDM, squaredDistance => breezeSquaredDistance}
+import breeze.linalg.{squaredDistance => breezeSquaredDistance, DenseMatrix => BDM}
 import org.json4s.jackson.JsonMethods.{parse => parseJson}
 
 import org.apache.spark.{Logging, SparkException, SparkFunSuite}
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/BlockMatrixSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/BlockMatrixSuite.scala
index b8eb103058..d91ba8a6fd 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/BlockMatrixSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/BlockMatrixSuite.scala
@@ -22,7 +22,7 @@ import java.{util => ju}
 import breeze.linalg.{DenseMatrix => BDM}
 
 import org.apache.spark.{SparkException, SparkFunSuite}
-import org.apache.spark.mllib.linalg.{SparseMatrix, DenseMatrix, Matrices, Matrix}
+import org.apache.spark.mllib.linalg.{DenseMatrix, Matrices, Matrix, SparseMatrix}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/CoordinateMatrixSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/CoordinateMatrixSuite.scala
index f3728cd036..37d75103d1 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/CoordinateMatrixSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/CoordinateMatrixSuite.scala
@@ -20,8 +20,8 @@ package org.apache.spark.mllib.linalg.distributed
 import breeze.linalg.{DenseMatrix => BDM}
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.linalg.Vectors
+import org.apache.spark.mllib.util.MLlibTestSparkContext
 
 class CoordinateMatrixSuite extends SparkFunSuite with MLlibTestSparkContext {
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/IndexedRowMatrixSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/IndexedRowMatrixSuite.scala
index 6de6cf2fa8..5b7ccb9015 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/IndexedRowMatrixSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/IndexedRowMatrixSuite.scala
@@ -20,9 +20,9 @@ package org.apache.spark.mllib.linalg.distributed
 import breeze.linalg.{diag => brzDiag, DenseMatrix => BDM, DenseVector => BDV}
 
 import org.apache.spark.SparkFunSuite
+import org.apache.spark.mllib.linalg.{Matrices, Vectors}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.rdd.RDD
-import org.apache.spark.mllib.linalg.{Matrices, Vectors}
 
 class IndexedRowMatrixSuite extends SparkFunSuite with MLlibTestSparkContext {
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/RowMatrixSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/RowMatrixSuite.scala
index 0ff901ddc4..2dff52c601 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/RowMatrixSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/RowMatrixSuite.scala
@@ -21,11 +21,11 @@ import java.util.Arrays
 
 import scala.util.Random
 
+import breeze.linalg.{norm => brzNorm, svd => brzSvd, DenseMatrix => BDM, DenseVector => BDV}
 import breeze.numerics.abs
-import breeze.linalg.{DenseVector => BDV, DenseMatrix => BDM, norm => brzNorm, svd => brzSvd}
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.linalg.{Matrices, Vectors, Vector}
+import org.apache.spark.mllib.linalg.{Matrices, Vector, Vectors}
 import org.apache.spark.mllib.random.RandomRDDs
 import org.apache.spark.mllib.util.{LocalClusterSparkContext, MLlibTestSparkContext}
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/optimization/GradientDescentSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/optimization/GradientDescentSuite.scala
index 36ac7d2672..1c9b7c78e5 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/optimization/GradientDescentSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/optimization/GradientDescentSuite.scala
@@ -25,7 +25,7 @@ import org.scalatest.Matchers
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.Vectors
 import org.apache.spark.mllib.regression._
-import org.apache.spark.mllib.util.{MLUtils, LocalClusterSparkContext, MLlibTestSparkContext}
+import org.apache.spark.mllib.util.{LocalClusterSparkContext, MLlibTestSparkContext, MLUtils}
 import org.apache.spark.mllib.util.TestingUtils._
 
 object GradientDescentSuite {
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/random/RandomRDDsSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/random/RandomRDDsSuite.scala
index 413db2000d..0b4c7eb302 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/random/RandomRDDsSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/random/RandomRDDsSuite.scala
@@ -19,10 +19,10 @@ package org.apache.spark.mllib.random
 
 import scala.collection.mutable.ArrayBuffer
 
-import org.apache.spark.SparkFunSuite
 import org.apache.spark.SparkContext._
+import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.Vector
-import org.apache.spark.mllib.rdd.{RandomRDDPartition, RandomRDD}
+import org.apache.spark.mllib.rdd.{RandomRDD, RandomRDDPartition}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.rdd.RDD
 import org.apache.spark.util.StatCounter
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/rdd/MLPairRDDFunctionsSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/rdd/MLPairRDDFunctionsSuite.scala
index 10f5a2be48..5623142985 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/rdd/MLPairRDDFunctionsSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/rdd/MLPairRDDFunctionsSuite.scala
@@ -18,8 +18,8 @@
 package org.apache.spark.mllib.rdd
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.rdd.MLPairRDDFunctions._
+import org.apache.spark.mllib.util.MLlibTestSparkContext
 
 class MLPairRDDFunctionsSuite extends SparkFunSuite with MLlibTestSparkContext {
   test("topByKey") {
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/rdd/RDDFunctionsSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/rdd/RDDFunctionsSuite.scala
index ac93733bab..0e931fca6c 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/rdd/RDDFunctionsSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/rdd/RDDFunctionsSuite.scala
@@ -18,8 +18,8 @@
 package org.apache.spark.mllib.rdd
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.rdd.RDDFunctions._
+import org.apache.spark.mllib.util.MLlibTestSparkContext
 
 class RDDFunctionsSuite extends SparkFunSuite with MLlibTestSparkContext {
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/regression/LassoSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/regression/LassoSuite.scala
index 39537e7bb4..d96103d01e 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/regression/LassoSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/regression/LassoSuite.scala
@@ -21,7 +21,7 @@ import scala.util.Random
 
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.Vectors
-import org.apache.spark.mllib.util.{LocalClusterSparkContext, LinearDataGenerator,
+import org.apache.spark.mllib.util.{LinearDataGenerator, LocalClusterSparkContext,
   MLlibTestSparkContext}
 import org.apache.spark.util.Utils
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/regression/LinearRegressionSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/regression/LinearRegressionSuite.scala
index f88a1c33c9..0694079b9d 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/regression/LinearRegressionSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/regression/LinearRegressionSuite.scala
@@ -21,7 +21,7 @@ import scala.util.Random
 
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.Vectors
-import org.apache.spark.mllib.util.{LocalClusterSparkContext, LinearDataGenerator,
+import org.apache.spark.mllib.util.{LinearDataGenerator, LocalClusterSparkContext,
   MLlibTestSparkContext}
 import org.apache.spark.util.Utils
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/regression/RidgeRegressionSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/regression/RidgeRegressionSuite.scala
index 7a781fee63..8fb8886645 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/regression/RidgeRegressionSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/regression/RidgeRegressionSuite.scala
@@ -23,7 +23,7 @@ import org.jblas.DoubleMatrix
 
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.Vectors
-import org.apache.spark.mllib.util.{LocalClusterSparkContext, LinearDataGenerator,
+import org.apache.spark.mllib.util.{LinearDataGenerator, LocalClusterSparkContext,
   MLlibTestSparkContext}
 import org.apache.spark.util.Utils
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/stat/StreamingTestSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/stat/StreamingTestSuite.scala
index 3c657c8cfe..1142102bb0 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/stat/StreamingTestSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/stat/StreamingTestSuite.scala
@@ -18,8 +18,8 @@
 package org.apache.spark.mllib.stat
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.stat.test.{StreamingTest, StreamingTestResult, StudentTTest,
-  WelchTTest, BinarySample}
+import org.apache.spark.mllib.stat.test.{BinarySample, StreamingTest, StreamingTestResult,
+  StudentTTest, WelchTTest}
 import org.apache.spark.streaming.TestSuiteBase
 import org.apache.spark.streaming.dstream.DStream
 import org.apache.spark.util.StatCounter
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/stat/distribution/MultivariateGaussianSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/stat/distribution/MultivariateGaussianSuite.scala
index 6e7a003475..669d44223d 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/stat/distribution/MultivariateGaussianSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/stat/distribution/MultivariateGaussianSuite.scala
@@ -18,7 +18,7 @@
 package org.apache.spark.mllib.stat.distribution
 
 import org.apache.spark.SparkFunSuite
-import org.apache.spark.mllib.linalg.{ Vectors, Matrices }
+import org.apache.spark.mllib.linalg.{Matrices, Vectors}
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.mllib.util.TestingUtils._
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/tree/DecisionTreeSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/tree/DecisionTreeSuite.scala
index bf8fe1acac..a9c935bd42 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/tree/DecisionTreeSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/tree/DecisionTreeSuite.scala
@@ -23,9 +23,9 @@ import scala.collection.mutable
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.Vectors
 import org.apache.spark.mllib.regression.LabeledPoint
+import org.apache.spark.mllib.tree.configuration.{QuantileStrategy, Strategy}
 import org.apache.spark.mllib.tree.configuration.Algo._
 import org.apache.spark.mllib.tree.configuration.FeatureType._
-import org.apache.spark.mllib.tree.configuration.{QuantileStrategy, Strategy}
 import org.apache.spark.mllib.tree.impl.{BaggedPoint, DecisionTreeMetadata, TreePoint}
 import org.apache.spark.mllib.tree.impurity.{Entropy, Gini, Variance}
 import org.apache.spark.mllib.tree.model._
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/tree/EnsembleTestHelper.scala b/mllib/src/test/scala/org/apache/spark/mllib/tree/EnsembleTestHelper.scala
index 3d3f80063f..1cc8f34202 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/tree/EnsembleTestHelper.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/tree/EnsembleTestHelper.scala
@@ -17,13 +17,13 @@
 
 package org.apache.spark.mllib.tree
 
+import scala.collection.mutable
+
 import org.apache.spark.mllib.linalg.Vectors
 import org.apache.spark.mllib.regression.LabeledPoint
 import org.apache.spark.mllib.tree.model.TreeEnsembleModel
 import org.apache.spark.util.StatCounter
 
-import scala.collection.mutable
-
 object EnsembleTestHelper {
 
   /**
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/tree/GradientBoostedTreesSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/tree/GradientBoostedTreesSuite.scala
index 6fc9e8df62..acb3b953b5 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/tree/GradientBoostedTreesSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/tree/GradientBoostedTreesSuite.scala
@@ -19,15 +19,14 @@ package org.apache.spark.mllib.tree
 
 import org.apache.spark.{Logging, SparkFunSuite}
 import org.apache.spark.mllib.regression.LabeledPoint
-import org.apache.spark.mllib.tree.configuration.Algo._
 import org.apache.spark.mllib.tree.configuration.{BoostingStrategy, Strategy}
+import org.apache.spark.mllib.tree.configuration.Algo._
 import org.apache.spark.mllib.tree.impurity.Variance
-import org.apache.spark.mllib.tree.loss.{AbsoluteError, SquaredError, LogLoss}
+import org.apache.spark.mllib.tree.loss.{AbsoluteError, LogLoss, SquaredError}
 import org.apache.spark.mllib.tree.model.GradientBoostedTreesModel
 import org.apache.spark.mllib.util.MLlibTestSparkContext
 import org.apache.spark.util.Utils
 
-
 /**
  * Test suite for [[GradientBoostedTrees]].
  */
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/util/LocalClusterSparkContext.scala b/mllib/src/test/scala/org/apache/spark/mllib/util/LocalClusterSparkContext.scala
index 4f73b0809d..9b2d023bbf 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/util/LocalClusterSparkContext.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/util/LocalClusterSparkContext.scala
@@ -17,7 +17,7 @@
 
 package org.apache.spark.mllib.util
 
-import org.scalatest.{Suite, BeforeAndAfterAll}
+import org.scalatest.{BeforeAndAfterAll, Suite}
 
 import org.apache.spark.{SparkConf, SparkContext}
 
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/util/TestingUtils.scala b/mllib/src/test/scala/org/apache/spark/mllib/util/TestingUtils.scala
index 352193a678..6de9aaf94f 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/util/TestingUtils.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/util/TestingUtils.scala
@@ -17,9 +17,10 @@
 
 package org.apache.spark.mllib.util
 
-import org.apache.spark.mllib.linalg.{Matrix, Vector}
 import org.scalatest.exceptions.TestFailedException
 
+import org.apache.spark.mllib.linalg.{Matrix, Vector}
+
 object TestingUtils {
 
   val ABS_TOL_MSG = " using absolute tolerance"
diff --git a/mllib/src/test/scala/org/apache/spark/mllib/util/TestingUtilsSuite.scala b/mllib/src/test/scala/org/apache/spark/mllib/util/TestingUtilsSuite.scala
index 8f475f3024..44c39704e5 100644
--- a/mllib/src/test/scala/org/apache/spark/mllib/util/TestingUtilsSuite.scala
+++ b/mllib/src/test/scala/org/apache/spark/mllib/util/TestingUtilsSuite.scala
@@ -17,10 +17,11 @@
 
 package org.apache.spark.mllib.util
 
+import org.scalatest.exceptions.TestFailedException
+
 import org.apache.spark.SparkFunSuite
 import org.apache.spark.mllib.linalg.Vectors
 import org.apache.spark.mllib.util.TestingUtils._
-import org.scalatest.exceptions.TestFailedException
 
 class TestingUtilsSuite extends SparkFunSuite {