System.SpanTests.ReadOnlySpanTests.StringSliceNullChecked C# (CSharp) Method

        public static void StringSliceNullChecked()
        {
            string s = null;
            Assert.Throws<ArgumentNullException>(() => s.Slice().DontBox());
            Assert.Throws<ArgumentNullException>(() => s.Slice(0).DontBox());
            Assert.Throws<ArgumentNullException>(() => s.Slice(0, 0).DontBox());
        }