MathBuilderTest.java

packagecom.thealgorithms.maths;

importstaticorg.junit.jupiter.api.Assertions.assertArrayEquals;
importstaticorg.junit.jupiter.api.Assertions.assertEquals;

importorg.junit.jupiter.api.Test;

classMathBuilderTest {

@Test
voidsimpleMath() {
doubleresult = newMathBuilder.Builder(100).add(200).multiply(10).print().divideIf(20, (a, b) -> a % 2 == 0).sqrt().print().ceil().build().get();
assertEquals(13, result);
 }

@Test
voidmemoryTest() {
longresult = newMathBuilder.Builder().set(100).sqrt().remember().add(21).recallIf(a -> a < 50, true).mod(2).build().toLong();
assertEquals(0, result);
 }

@Test
voidfreeFallDistance() {
longdistance = newMathBuilder.Builder(9.81).multiply(0.5).multiply(5 * 5).round().build().toLong();
assertEquals(123, distance); // Expected result: 0.5 * 9.81 * 25 = 122.625 ≈ 123
 }

@Test
voidbatchSalaryProcessing() {
double[] salaries = {2000, 3000, 4000, 5000};
long[] processedSalaries = newlong[salaries.length];
for (inti = 0; i < salaries.length; i++) {
processedSalaries[i] = newMathBuilder.Builder(salaries[i]).addIf(salaries[i] * 0.1, (sal, bonus) -> sal > 2500).multiply(0.92).round().build().toLong();
 }
long[] expectedSalaries = {1840, 3036, 4048, 5060};
assertArrayEquals(expectedSalaries, processedSalaries);
 }

@Test
voidparenthesis() {
// 10 + (20*5) - 40 + (100 / 10) = 80
doubleresult = newMathBuilder.Builder(10).openParenthesis(20).multiply(5).closeParenthesisAndPlus().minus(40).openParenthesis(100).divide(10).closeParenthesisAndPlus().build().get();
assertEquals(80, result);
 }

@Test
voidareaOfCircle() {
// Radius is 4
doublearea = newMathBuilder.Builder().pi().openParenthesis(4).multiply(4).closeParenthesisAndMultiply().build().get();
assertEquals(Math.PI * 4 * 4, area);
 }
}