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Add tests for SumOfArithmeticSeries
(#4256)
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package com.thealgorithms.maths;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import org.junit.jupiter.api.Test;
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public class SumOfArithmeticSeriesTest {
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@Test
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public void testSumFrom1To10() {
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assertEquals(55.0, SumOfArithmeticSeries.sumOfSeries(1.0, 1.0, 10));
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}
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@Test
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public void testSumOfOddNumbers1To19() {
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assertEquals(100.0, SumOfArithmeticSeries.sumOfSeries(1.0, 2.0, 10));
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}
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@Test
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public void testA() {
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assertEquals(460.0, SumOfArithmeticSeries.sumOfSeries(1.0, 10.0, 10));
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}
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@Test
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public void testB() {
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assertEquals(5.5, SumOfArithmeticSeries.sumOfSeries(0.1, 0.1, 10));
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}
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@Test
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public void testC() {
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assertEquals(49600.0, SumOfArithmeticSeries.sumOfSeries(1, 10, 100));
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}
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@Test
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public void testForZeroTerms() {
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assertEquals(0.0, SumOfArithmeticSeries.sumOfSeries(1.0, 100.0, 0), 0.00001);
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}
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@Test
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public void testIfThrowsExceptionForNegativeNumberOfTerms() {
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assertThrows(IllegalArgumentException.class, () -> SumOfArithmeticSeries.sumOfSeries(1.0, 1.0, -1));
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}
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@Test
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public void testWithSingleTerm() {
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assertEquals(123.0, SumOfArithmeticSeries.sumOfSeries(123.0, 5.0, 1));
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}
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@Test
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public void testWithZeroCommonDiff() {
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assertEquals(100.0, SumOfArithmeticSeries.sumOfSeries(1.0, 0.0, 100));
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}
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}
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