System.Text.Tests.StringBuilderTests.EnsureCapacity_InvalidCapacity_ThrowsArgumentOutOfRangeException C# (CSharp) Method

        public static void EnsureCapacity_InvalidCapacity_ThrowsArgumentOutOfRangeException()
        {
            var builder = new StringBuilder("Hello", 10);
            Assert.Throws<ArgumentOutOfRangeException>("capacity", () => builder.EnsureCapacity(-1)); // Capacity < 0
            Assert.Throws<ArgumentOutOfRangeException>("capacity", () => builder.EnsureCapacity(builder.MaxCapacity + 1)); // Capacity > builder.MaxCapacity
        }