
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.

Challenge: Favorite Colors

解答