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Diffstat (limited to 'mllib-local/src/test/scala/org/apache/spark/ml/linalg/BreezeMatrixConversionSuite.scala')
-rw-r--r-- | mllib-local/src/test/scala/org/apache/spark/ml/linalg/BreezeMatrixConversionSuite.scala | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/mllib-local/src/test/scala/org/apache/spark/ml/linalg/BreezeMatrixConversionSuite.scala b/mllib-local/src/test/scala/org/apache/spark/ml/linalg/BreezeMatrixConversionSuite.scala new file mode 100644 index 0000000000..70a21e41bf --- /dev/null +++ b/mllib-local/src/test/scala/org/apache/spark/ml/linalg/BreezeMatrixConversionSuite.scala @@ -0,0 +1,71 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.ml.linalg + +import breeze.linalg.{CSCMatrix => BSM, DenseMatrix => BDM} + +import org.apache.spark.ml.SparkMLFunSuite + +class BreezeMatrixConversionSuite extends SparkMLFunSuite { + test("dense matrix to breeze") { + val mat = Matrices.dense(3, 2, Array(0.0, 1.0, 2.0, 3.0, 4.0, 5.0)) + val breeze = mat.toBreeze.asInstanceOf[BDM[Double]] + assert(breeze.rows === mat.numRows) + assert(breeze.cols === mat.numCols) + assert(breeze.data.eq(mat.asInstanceOf[DenseMatrix].values), "should not copy data") + } + + test("dense breeze matrix to matrix") { + val breeze = new BDM[Double](3, 2, Array(0.0, 1.0, 2.0, 3.0, 4.0, 5.0)) + val mat = Matrices.fromBreeze(breeze).asInstanceOf[DenseMatrix] + assert(mat.numRows === breeze.rows) + assert(mat.numCols === breeze.cols) + assert(mat.values.eq(breeze.data), "should not copy data") + // transposed matrix + val matTransposed = Matrices.fromBreeze(breeze.t).asInstanceOf[DenseMatrix] + assert(matTransposed.numRows === breeze.cols) + assert(matTransposed.numCols === breeze.rows) + assert(matTransposed.values.eq(breeze.data), "should not copy data") + } + + test("sparse matrix to breeze") { + val values = Array(1.0, 2.0, 4.0, 5.0) + val colPtrs = Array(0, 2, 4) + val rowIndices = Array(1, 2, 1, 2) + val mat = Matrices.sparse(3, 2, colPtrs, rowIndices, values) + val breeze = mat.toBreeze.asInstanceOf[BSM[Double]] + assert(breeze.rows === mat.numRows) + assert(breeze.cols === mat.numCols) + assert(breeze.data.eq(mat.asInstanceOf[SparseMatrix].values), "should not copy data") + } + + test("sparse breeze matrix to sparse matrix") { + val values = Array(1.0, 2.0, 4.0, 5.0) + val colPtrs = Array(0, 2, 4) + val rowIndices = Array(1, 2, 1, 2) + val breeze = new BSM[Double](values, 3, 2, colPtrs, rowIndices) + val mat = Matrices.fromBreeze(breeze).asInstanceOf[SparseMatrix] + assert(mat.numRows === breeze.rows) + assert(mat.numCols === breeze.cols) + assert(mat.values.eq(breeze.data), "should not copy data") + val matTransposed = Matrices.fromBreeze(breeze.t).asInstanceOf[SparseMatrix] + assert(matTransposed.numRows === breeze.cols) + assert(matTransposed.numCols === breeze.rows) + assert(!matTransposed.values.eq(breeze.data), "has to copy data") + } +} |