System.Tests.StringTests.ToCharArray_Invalid C# (CSharp) Method

        public static void ToCharArray_Invalid()
        {
            // StartIndex < 0 or startIndex > string.Length
            Assert.Throws<ArgumentOutOfRangeException>("startIndex", () => "foo".ToCharArray(-1, 0));
            Assert.Throws<ArgumentOutOfRangeException>("startIndex", () => "foo".ToCharArray(4, 0)); // Start index > string.Length

            // Length < 0 or length > string.Length
            Assert.Throws<ArgumentOutOfRangeException>("length", () => "foo".ToCharArray(0, -1));
            Assert.Throws<ArgumentOutOfRangeException>("startIndex", () => "foo".ToCharArray(0, 4));

            // StartIndex + length > string.Length
            Assert.Throws<ArgumentOutOfRangeException>("startIndex", () => "foo".ToCharArray(3, 1));
            Assert.Throws<ArgumentOutOfRangeException>("startIndex", () => "foo".ToCharArray(2, 2));
        }