package com.example;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;

public class MainTest {
    @Test
    @DisplayName("sumHighValueItems sums only items > 10 (mixed values)")
    void testMixedValues() {
        int[] prices = {5, 12, 8, 20, 3, 15};
        int expected = 47;
        int actual = com.example.Main.sumHighValueItems(prices);
        assertEquals(expected, actual, "Should sum only 12, 20, and 15 (total 47)");
    }

    @Test
    @DisplayName("sumHighValueItems returns 0 when all items are 10 or less")
    void testAllBelowOrEqualTen() {
        int[] prices = {10, 5, 8, 3, 7};
        int expected = 0;
        int actual = com.example.Main.sumHighValueItems(prices);
        assertEquals(expected, actual, "Should return 0 when no items are above 10");
    }

    @Test
    @DisplayName("sumHighValueItems sums all when all items are above 10")
    void testAllAboveTen() {
        int[] prices = {11, 20, 30};
        int expected = 61;
        int actual = com.example.Main.sumHighValueItems(prices);
        assertEquals(expected, actual, "Should sum all prices (61)");
    }

    @Test
    @DisplayName("sumHighValueItems returns 0 for empty array")
    void testEmptyArray() {
        int[] prices = {};
        int expected = 0;
        int actual = com.example.Main.sumHighValueItems(prices);
        assertEquals(expected, actual, "Should return 0 for empty input");
    }

    @Test
    @DisplayName("sumHighValueItems handles single element array above 10")
    void testSingleAboveTen() {
        int[] prices = {25};
        int expected = 25;
        int actual = com.example.Main.sumHighValueItems(prices);
        assertEquals(expected, actual, "Should return the single element if above 10");
    }

    @Test
    @DisplayName("sumHighValueItems handles single element array at or below 10")
    void testSingleAtOrBelowTen() {
        int[] prices = {10};
        int expected = 0;
        int actual = com.example.Main.sumHighValueItems(prices);
        assertEquals(expected, actual, "Should return 0 if single element is not above 10");
    }
}

MainTest.java

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Introduce the concept of loops, their necessity, and the basic structure of for, while, and do-while loops in Java. This section lays the foundation for understanding how repetition works in programming.

Dive deeper into different loop types, including do-while loops and nested loops, and learn how to control loop execution with break and continue.

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Challenge: Array Sum Calculator

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Challenge: Array Sum Calculator

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