AverageTest.java

packagecom.thealgorithms.maths;

importorg.junit.jupiter.api.Assertions;
importorg.junit.jupiter.api.Test;

publicclassAverageTest {

privatestaticfinaldoubleSMALL_VALUE = 0.00001d;

@Test
publicvoidtestAverageDouble12() {
double[] numbers = {3d, 6d, 9d, 12d, 15d, 18d, 21d};
Assertions.assertEquals(12d, Average.average(numbers), SMALL_VALUE);
 }

@Test
publicvoidtestAverageDouble20() {
double[] numbers = {5d, 10d, 15d, 20d, 25d, 30d, 35d};
Assertions.assertEquals(20d, Average.average(numbers), SMALL_VALUE);
 }

@Test
publicvoidtestAverageDouble() {
double[] numbers = {1d, 2d, 3d, 4d, 5d, 6d, 7d, 8d};
Assertions.assertEquals(4.5d, Average.average(numbers), SMALL_VALUE);
 }

@Test
publicvoidtestAverageInt() {
int[] numbers = {2, 4, 10};
Assertions.assertEquals(5, Average.average(numbers));
 }
}