
using Xunit;
namespace ConsoleApp {
    public class ProgramTests {
        [Fact(DisplayName = "ReverseWords reverses a normal sentence correctly")]
        public void ReverseWords_ReversesNormalSentence()
        {
            string input = "Loops make code powerful";
            string expected = "powerful code make Loops";
            Assert.Equal(expected, Program.ReverseWords(input));
        }

        [Fact(DisplayName = "ReverseWords returns same word for a single-word sentence")]
        public void ReverseWords_SingleWord()
        {
            string input = "Hello";
            string expected = "Hello";
            Assert.Equal(expected, Program.ReverseWords(input));
        }

        [Fact(DisplayName = "ReverseWords returns empty string for empty input")]
        public void ReverseWords_EmptyString()
        {
            string input = "";
            string expected = "";
            Assert.Equal(expected, Program.ReverseWords(input));
        }

        [Fact(DisplayName = "ReverseWords preserves single spacing between words")]
        public void ReverseWords_PreservesSingleSpacing()
        {
            string input = "a b c d";
            string expected = "d c b a";
            Assert.Equal(expected, Program.ReverseWords(input));
        }
    }
}

ProgramTests.cs

Deepen your understanding of C# loops with a hands-on, challenge-driven course. Explore for, while, and do-while loops, master nested structures, generate patterns, and tackle real-world problems. Each section alternates between engaging theory and practical coding challenges to ensure you build both conceptual understanding and practical fluency.

Challenge: Reverse Words in a Sentence

Solution