Merge pull request #369 from pillis/master

SPARK-961 Add a Vector.random() method

Added method and testcases

1 files changed, 44 insertions, 0 deletions

diff --git a/core/src/test/scala/org/apache/spark/util/VectorSuite.scala b/core/src/test/scala/org/apache/spark/util/VectorSuite.scala
new file mode 100644
index 0000000000..7006571ef0
--- /dev/null
+++ b/core/src/test/scala/org/apache/spark/util/VectorSuite.scala
@@ -0,0 +1,44 @@
+/*
+ * 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.util
+
+import scala.util.Random
+
+import org.scalatest.FunSuite
+
+/**
+ * Tests org.apache.spark.util.Vector functionality
+ */
+class VectorSuite extends FunSuite {
+
+  def verifyVector(vector: Vector, expectedLength: Int) = {
+    assert(vector.length == expectedLength)
+    assert(vector.elements.min > 0.0)
+    assert(vector.elements.max < 1.0)
+  }
+
+  test("random with default random number generator") {
+    val vector100 = Vector.random(100)
+    verifyVector(vector100, 100)
+  }
+
+  test("random with given random number generator") {
+    val vector100 = Vector.random(100, new Random(100))
+    verifyVector(vector100, 100)
+  }
+}