public void Test3()
        {
            // Arrange
            var testString = new string(' ', new Random().Next(1, int.MaxValue / 2));

            // Act
            var isNullOrWhitespace = CustomString.IsNullOrWhiteSpace(testString);

            // Assert
            Assert.IsTrue(isNullOrWhitespace, "property x wasn't expected value");
        }
        public void Test1(string input, bool expected)
        {
            // Arrange
            string testString = null;

            // Act
            var isNullOrWhitespace = CustomString.IsNullOrWhiteSpace(input);

            // Assert
            Assert.IsTrue(expected);
        }
 public void Test7()
 {
     Assert.IsFalse(CustomString.IsNullOrWhiteSpace("a"));
 }
 public void Test6()
 {
     Assert.IsTrue(CustomString.IsNullOrWhiteSpace("\r"));
 }
 public void TabShouldBeWhitespace()
 {
     Assert.IsTrue(CustomString.IsNullOrWhiteSpace("\t"));
 }