| package com.yahoo.labs.samoa.core; |
| |
| /* |
| * #%L |
| * SAMOA |
| * %% |
| * Copyright (C) 2014 - 2015 Apache Software Foundation |
| * %% |
| * Licensed 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. |
| * #L% |
| */ |
| |
| import static org.hamcrest.CoreMatchers.*; |
| import static org.junit.Assert.*; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class DoubleVectorTest { |
| private DoubleVector emptyVector, array5Vector; |
| |
| @Before |
| public void setUp() { |
| emptyVector = new DoubleVector(); |
| array5Vector = new DoubleVector(new double[] { 1.1, 2.5, 0, 4.7, 0 }); |
| } |
| |
| @Test |
| public void testGetArrayRef() { |
| assertThat(emptyVector.getArrayRef(), notNullValue()); |
| assertTrue(emptyVector.getArrayRef() == emptyVector.getArrayRef()); |
| assertEquals(5, array5Vector.getArrayRef().length); |
| } |
| |
| @Test |
| public void testGetArrayCopy() { |
| double[] arrayRef; |
| arrayRef = emptyVector.getArrayRef(); |
| assertTrue(arrayRef != emptyVector.getArrayCopy()); |
| assertThat(arrayRef, is(equalTo(emptyVector.getArrayCopy()))); |
| |
| arrayRef = array5Vector.getArrayRef(); |
| assertTrue(arrayRef != array5Vector.getArrayCopy()); |
| assertThat(arrayRef, is(equalTo(array5Vector.getArrayCopy()))); |
| } |
| |
| @Test |
| public void testNumNonZeroEntries() { |
| assertEquals(0, emptyVector.numNonZeroEntries()); |
| assertEquals(3, array5Vector.numNonZeroEntries()); |
| } |
| |
| @Test(expected = IndexOutOfBoundsException.class) |
| public void testGetValueOutOfBound() { |
| @SuppressWarnings("unused") |
| double value = emptyVector.getArrayRef()[0]; |
| } |
| |
| @Test() |
| public void testSetValue() { |
| // test automatic vector enlargement |
| emptyVector.setValue(0, 1.0); |
| assertEquals(1, emptyVector.getArrayRef().length); |
| assertEquals(1.0, emptyVector.getArrayRef()[0], 0.0); // should be exactly the same, so delta=0.0 |
| |
| emptyVector.setValue(5, 5.5); |
| assertEquals(6, emptyVector.getArrayRef().length); |
| assertEquals(2, emptyVector.numNonZeroEntries()); |
| assertEquals(5.5, emptyVector.getArrayRef()[5], 0.0); // should be exactly the same, so delta=0.0 |
| } |
| |
| @Test |
| public void testAddToValue() { |
| array5Vector.addToValue(2, 5.0); |
| assertEquals(5, array5Vector.getArrayRef()[2], 0.0); // should be exactly the same, so delta=0.0 |
| |
| // test automatic vector enlargement |
| emptyVector.addToValue(0, 1.0); |
| assertEquals(1, emptyVector.getArrayRef()[0], 0.0); // should be exactly the same, so delta=0.0 |
| } |
| |
| @Test |
| public void testSumOfValues() { |
| assertEquals(1.1 + 2.5 + 4.7, array5Vector.sumOfValues(), Double.MIN_NORMAL); |
| } |
| |
| } |