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/*
* 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.param
import org.scalatest.FunSuite
class ParamsSuite extends FunSuite {
test("param") {
val solver = new TestParams()
val uid = solver.uid
import solver.{maxIter, inputCol}
assert(maxIter.name === "maxIter")
assert(maxIter.doc === "max number of iterations (>= 0)")
assert(maxIter.parent === uid)
assert(maxIter.toString === s"${uid}__maxIter")
assert(!maxIter.isValid(-1))
assert(maxIter.isValid(0))
assert(maxIter.isValid(1))
solver.setMaxIter(5)
assert(solver.explainParam(maxIter) ===
"maxIter: max number of iterations (>= 0) (default: 10, current: 5)")
assert(inputCol.toString === s"${uid}__inputCol")
intercept[IllegalArgumentException] {
solver.setMaxIter(-1)
}
}
test("param pair") {
val solver = new TestParams()
import solver.maxIter
val pair0 = maxIter -> 5
val pair1 = maxIter.w(5)
val pair2 = ParamPair(maxIter, 5)
for (pair <- Seq(pair0, pair1, pair2)) {
assert(pair.param.eq(maxIter))
assert(pair.value === 5)
}
intercept[IllegalArgumentException] {
val pair = maxIter -> -1
}
}
test("param map") {
val solver = new TestParams()
import solver.{maxIter, inputCol}
val map0 = ParamMap.empty
assert(!map0.contains(maxIter))
map0.put(maxIter, 10)
assert(map0.contains(maxIter))
assert(map0(maxIter) === 10)
intercept[IllegalArgumentException] {
map0.put(maxIter, -1)
}
assert(!map0.contains(inputCol))
intercept[NoSuchElementException] {
map0(inputCol)
}
map0.put(inputCol -> "input")
assert(map0.contains(inputCol))
assert(map0(inputCol) === "input")
val map1 = map0.copy
val map2 = ParamMap(maxIter -> 10, inputCol -> "input")
val map3 = new ParamMap()
.put(maxIter, 10)
.put(inputCol, "input")
val map4 = ParamMap.empty ++ map0
val map5 = ParamMap.empty
map5 ++= map0
for (m <- Seq(map1, map2, map3, map4, map5)) {
assert(m.contains(maxIter))
assert(m(maxIter) === 10)
assert(m.contains(inputCol))
assert(m(inputCol) === "input")
}
}
test("params") {
val solver = new TestParams()
import solver.{maxIter, inputCol}
val params = solver.params
assert(params.length === 2)
assert(params(0).eq(inputCol), "params must be ordered by name")
assert(params(1).eq(maxIter))
assert(!solver.isSet(maxIter))
assert(solver.isDefined(maxIter))
assert(solver.getMaxIter === 10)
solver.setMaxIter(100)
assert(solver.isSet(maxIter))
assert(solver.getMaxIter === 100)
assert(!solver.isSet(inputCol))
assert(!solver.isDefined(inputCol))
intercept[NoSuchElementException](solver.getInputCol)
assert(solver.explainParam(maxIter) ===
"maxIter: max number of iterations (>= 0) (default: 10, current: 100)")
assert(solver.explainParams() ===
Seq(inputCol, maxIter).map(solver.explainParam).mkString("\n"))
assert(solver.getParam("inputCol").eq(inputCol))
assert(solver.getParam("maxIter").eq(maxIter))
assert(solver.hasParam("inputCol"))
assert(!solver.hasParam("abc"))
intercept[NoSuchElementException] {
solver.getParam("abc")
}
intercept[IllegalArgumentException] {
solver.validateParams()
}
solver.copy(ParamMap(inputCol -> "input")).validateParams()
solver.setInputCol("input")
assert(solver.isSet(inputCol))
assert(solver.isDefined(inputCol))
assert(solver.getInputCol === "input")
solver.validateParams()
intercept[IllegalArgumentException] {
ParamMap(maxIter -> -10)
}
intercept[IllegalArgumentException] {
solver.setMaxIter(-10)
}
solver.clearMaxIter()
assert(!solver.isSet(maxIter))
val copied = solver.copy(ParamMap(solver.maxIter -> 50))
assert(copied.uid === solver.uid)
assert(copied.getInputCol === solver.getInputCol)
assert(copied.getMaxIter === 50)
}
test("ParamValidate") {
val alwaysTrue = ParamValidators.alwaysTrue[Int]
assert(alwaysTrue(1))
val gt1Int = ParamValidators.gt[Int](1)
assert(!gt1Int(1) && gt1Int(2))
val gt1Double = ParamValidators.gt[Double](1)
assert(!gt1Double(1.0) && gt1Double(1.1))
val gtEq1Int = ParamValidators.gtEq[Int](1)
assert(!gtEq1Int(0) && gtEq1Int(1))
val gtEq1Double = ParamValidators.gtEq[Double](1)
assert(!gtEq1Double(0.9) && gtEq1Double(1.0))
val lt1Int = ParamValidators.lt[Int](1)
assert(lt1Int(0) && !lt1Int(1))
val lt1Double = ParamValidators.lt[Double](1)
assert(lt1Double(0.9) && !lt1Double(1.0))
val ltEq1Int = ParamValidators.ltEq[Int](1)
assert(ltEq1Int(1) && !ltEq1Int(2))
val ltEq1Double = ParamValidators.ltEq[Double](1)
assert(ltEq1Double(1.0) && !ltEq1Double(1.1))
val inRange02IntInclusive = ParamValidators.inRange[Int](0, 2)
assert(inRange02IntInclusive(0) && inRange02IntInclusive(1) && inRange02IntInclusive(2) &&
!inRange02IntInclusive(-1) && !inRange02IntInclusive(3))
val inRange02IntExclusive =
ParamValidators.inRange[Int](0, 2, lowerInclusive = false, upperInclusive = false)
assert(!inRange02IntExclusive(0) && inRange02IntExclusive(1) && !inRange02IntExclusive(2))
val inRange02DoubleInclusive = ParamValidators.inRange[Double](0, 2)
assert(inRange02DoubleInclusive(0) && inRange02DoubleInclusive(1) &&
inRange02DoubleInclusive(2) &&
!inRange02DoubleInclusive(-0.1) && !inRange02DoubleInclusive(2.1))
val inRange02DoubleExclusive =
ParamValidators.inRange[Double](0, 2, lowerInclusive = false, upperInclusive = false)
assert(!inRange02DoubleExclusive(0) && inRange02DoubleExclusive(1) &&
!inRange02DoubleExclusive(2))
val inArray = ParamValidators.inArray[Int](Array(1, 2))
assert(inArray(1) && inArray(2) && !inArray(0))
}
}
object ParamsSuite extends FunSuite {
/**
* Checks common requirements for [[Params.params]]: 1) number of params; 2) params are ordered
* by names; 3) param parent has the same UID as the object's UID; 4) param name is the same as
* the param method name.
*/
def checkParams(obj: Params, expectedNumParams: Int): Unit = {
val params = obj.params
require(params.length === expectedNumParams,
s"Expect $expectedNumParams params but got ${params.length}: ${params.map(_.name).toSeq}.")
val paramNames = params.map(_.name)
require(paramNames === paramNames.sorted)
params.foreach { p =>
assert(p.parent === obj.uid)
assert(obj.getParam(p.name) === p)
}
}
}
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