package com.example;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.util.ArrayList;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

public class MainTest {
    @Test
    @DisplayName("calculateAverage returns correct average for provided list")
    void testCalculateAverage() {
        ArrayList<Integer> numbers = new ArrayList<>();
        numbers.add(10);
        numbers.add(20);
        numbers.add(30);
        numbers.add(40);
        numbers.add(50);
        double result = Main.calculateAverage(numbers);
        assertEquals(30.0, result, 0.0001, "Expected average to be 30.0 but got: " + result);
    }

    @Test
    @DisplayName("calculateAverage returns correct average for a different list")
    void testCalculateAverageDifferentList() {
        ArrayList<Integer> numbers = new ArrayList<>();
        numbers.add(1);
        numbers.add(2);
        numbers.add(3);
        numbers.add(4);
        numbers.add(5);
        numbers.add(6);
        double result = Main.calculateAverage(numbers);
        assertEquals(3.5, result, 0.0001, "Expected average to be 3.5 but got: " + result);
    }
}


MainTest.java

A comprehensive course on Java data types, covering primitives, reference types, type conversion, and practical applications. Designed for learners with basic Java syntax knowledge.

Explore Java's built-in primitive data types, their properties, and how to use them effectively.

Delve into Java's reference types, focusing on Strings and arrays, and how they differ from primitives.

Learn about type casting, automatic conversions, and the use of wrapper classes for primitives.

Challenge: Autoboxing in Collections

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