
using Xunit;
namespace ConsoleApp {
    public class ProgramTests {
        [Fact(DisplayName = "NameExists returns true when targetName is present in users array")] 
        public void NameExists_ReturnsTrue_WhenNamePresent() {
            string[] users = { "Alice", "Bob", "Charlie", "Diana" };
            Assert.True(Program.NameExists(users, "Alice"), "Should return true when first element matches.");
            Assert.True(Program.NameExists(users, "Charlie"), "Should return true when middle element matches.");
            Assert.True(Program.NameExists(users, "Diana"), "Should return true when last element matches.");
        }

        [Fact(DisplayName = "NameExists returns false when targetName is not present in users array")] 
        public void NameExists_ReturnsFalse_WhenNameNotPresent() {
            string[] users = { "Alice", "Bob", "Charlie", "Diana" };
            Assert.False(Program.NameExists(users, "Eve"), "Should return false when name is not present.");
            Assert.False(Program.NameExists(users, ""), "Should return false for empty string.");
        }

        [Fact(DisplayName = "NameExists works with empty users array")] 
        public void NameExists_WorksForEmptyArray() {
            string[] users = { };
            Assert.False(Program.NameExists(users, "Alice"), "Should return false when users array is empty.");
        }

        [Fact(DisplayName = "NameExists is case sensitive")] 
        public void NameExists_IsCaseSensitive() {
            string[] users = { "alice", "Bob" };
            Assert.False(Program.NameExists(users, "Alice"), "Should return false if case does not match.");
        }
    }
}

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: Find a Name

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