
using Xunit;
using Xunit;
using System;
using System.IO;

namespace ConsoleApp {
    public class ProgramTests {
        [Fact(DisplayName = "PrintFavoriteColors defines and prints five favorite colors")] 
        public void PrintFavoriteColors_PrintsDefinedColors() {
            var sw = new StringWriter();
            Console.SetOut(sw);
            Program.PrintFavoriteColors();
            string[] outputLines = sw.ToString().Split(new[] { '\\r', '\\n' }, StringSplitOptions.RemoveEmptyEntries);
            Assert.Equal(5, outputLines.Length);
            // Accept any five non-empty strings
            foreach (var line in outputLines) {
                Assert.False(string.IsNullOrWhiteSpace(line), "Each color should be a non-empty string");
            }
            Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = true });
        }
    }
}

ProgramTests.cs

Master the essentials and advanced techniques of working with arrays in C#. This course guides you from the basics of declaring and initializing arrays, through practical manipulation, searching, and advanced operations like sorting and matrix calculations. Each section blends engaging theory with real-world themed challenges to ensure a hands-on, beginner-friendly learning experience.

Start your journey with arrays in C#: learn how to declare, initialize, and access array elements, and tackle your first real-world array challenges.

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Advance your skills by learning how to reverse arrays, sort them manually, and understand how arrays are stored and copied in memory.

Explore two-dimensional arrays, learn to perform matrix operations, and tackle real-world challenges involving grids and tables.

Challenge: Favorite Colors

Solution

Challenge: Favorite Colors

Solution