HtmlKit.HtmlWriter.WriteStartTag C# (CSharp) Method

		public void WriteStartTag (HtmlTagId id)
		{
			if (id == HtmlTagId.Unknown)
				throw new ArgumentException ("Invalid tag.", "id");

			CheckDisposed ();

			if (WriterState != HtmlWriterState.Default) {
				html.Write (empty ? "/>" : ">");
				empty = false;
			}

			html.Write (string.Format ("<{0}", id.ToHtmlTagName ()));
			WriterState = HtmlWriterState.Tag;
		}

		public void TestArgumentExceptions ()
		{
			Assert.Throws<ArgumentNullException> (() => new HtmlWriter (null, Encoding.UTF8));
			Assert.Throws<ArgumentNullException> (() => new HtmlWriter (new MemoryStream (), null));
			Assert.Throws<ArgumentNullException> (() => new HtmlWriter (null));

			using (var html = new HtmlWriter (new StringWriter ())) {
				Assert.Throws<ArgumentNullException> (() => html.WriteAttribute (null));
				Assert.Throws<ArgumentNullException> (() => html.WriteAttribute (null, string.Empty));
				Assert.Throws<ArgumentNullException> (() => html.WriteAttribute ("name", null));
				Assert.Throws<ArgumentException> (() => html.WriteAttribute (string.Empty, null));
				Assert.Throws<ArgumentException> (() => html.WriteAttribute ("a b c", null));
				Assert.Throws<ArgumentNullException> (() => html.WriteAttribute (null, new char[1], 0, 1));
				Assert.Throws<ArgumentNullException> (() => html.WriteAttribute ("name", null, 0, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteAttribute ("name", new char[0], -1, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteAttribute ("name", new char[0], 0, 1));
				Assert.Throws<ArgumentException> (() => html.WriteAttribute (HtmlAttributeId.Unknown, new char[1], 0, 1));
				Assert.Throws<ArgumentNullException> (() => html.WriteAttribute (HtmlAttributeId.Alt, null, 0, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteAttribute (HtmlAttributeId.Alt, new char[0], -1, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteAttribute (HtmlAttributeId.Alt, new char[0], 0, 1));

				Assert.Throws<ArgumentException> (() => html.WriteAttributeName (HtmlAttributeId.Unknown));
				Assert.Throws<ArgumentNullException> (() => html.WriteAttributeName (null));

				Assert.Throws<ArgumentNullException> (() => html.WriteAttributeValue (null));
				Assert.Throws<ArgumentNullException> (() => html.WriteAttributeValue (null, 0, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteAttributeValue (new char[0], -1, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteAttributeValue (new char[0], 0, 1));

				Assert.Throws<ArgumentException> (() => html.WriteEmptyElementTag (HtmlTagId.Unknown));
				Assert.Throws<ArgumentNullException> (() => html.WriteEmptyElementTag (null));
				Assert.Throws<ArgumentException> (() => html.WriteEmptyElementTag (string.Empty));
				Assert.Throws<ArgumentException> (() => html.WriteEmptyElementTag ("a b c"));

				Assert.Throws<ArgumentException> (() => html.WriteEndTag (HtmlTagId.Unknown));
				Assert.Throws<ArgumentNullException> (() => html.WriteEndTag (null));
				Assert.Throws<ArgumentException> (() => html.WriteEndTag (string.Empty));
				Assert.Throws<ArgumentException> (() => html.WriteEndTag ("a b c"));

				Assert.Throws<ArgumentNullException> (() => html.WriteMarkupText (null));
				Assert.Throws<ArgumentNullException> (() => html.WriteMarkupText (null, 0, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteMarkupText (new char[0], -1, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteMarkupText (new char[0], 0, 1));

				Assert.Throws<ArgumentException> (() => html.WriteStartTag (HtmlTagId.Unknown));
				Assert.Throws<ArgumentNullException> (() => html.WriteStartTag (null));
				Assert.Throws<ArgumentException> (() => html.WriteStartTag (string.Empty));
				Assert.Throws<ArgumentException> (() => html.WriteStartTag ("a b c"));

				Assert.Throws<ArgumentNullException> (() => html.WriteText (null));
				Assert.Throws<ArgumentNullException> (() => html.WriteText (null, 0, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteText (new char[0], -1, 0));
				Assert.Throws<ArgumentOutOfRangeException> (() => html.WriteText (new char[0], 0, 1));

				Assert.Throws<ArgumentNullException> (() => html.WriteToken (null));
			}
		}