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

        public static void CopyTo_Invalid()
        {
            string s = "Hello";
            char[] dst = new char[10];

            Assert.Throws<ArgumentNullException>("destination", () => s.CopyTo(0, null, 0, 0)); // Dst is null

            Assert.Throws<ArgumentOutOfRangeException>("sourceIndex", () => s.CopyTo(-1, dst, 0, 0)); // Source index < 0
            Assert.Throws<ArgumentOutOfRangeException>("destinationIndex", () => s.CopyTo(0, dst, -1, 0)); // Destination index < 0

            Assert.Throws<ArgumentOutOfRangeException>("destinationIndex", () => s.CopyTo(0, dst, dst.Length, 1)); // Destination index > dst.Length

            Assert.Throws<ArgumentOutOfRangeException>("count", () => s.CopyTo(0, dst, 0, -1)); // Count < 0

            // Source index + count > string.Length
            Assert.Throws<ArgumentOutOfRangeException>("sourceIndex", () => s.CopyTo(s.Length, dst, 0, 1));
            Assert.Throws<ArgumentOutOfRangeException>("sourceIndex", () => s.CopyTo(s.Length - 1, dst, 0, 2));
            Assert.Throws<ArgumentOutOfRangeException>("sourceIndex", () => s.CopyTo(0, dst, 0, 6));
        }