TestProduction.cs

// Copyright 2004 Dominic Cooney. All Rights Reserved.

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using NUnit.Framework;
using System;

namespace Earley
{
	[TestFixture]
	public class TestProduction
	{
		[Test]
		public void CreateEmpty()
		{
			new Production();
		}

		[Test, ExpectedException(typeof(ArgumentNullException))]
		public void CreateNullSymbol()
		{
			new Production(null);
		}

		[Test, ExpectedException(typeof(ArgumentNullException))]
		public void CreateNullSymbols()
		{
			new Production((Symbol[])null);
		}

		[Test]
		public void SymbolsImmutable()
		{
			Production p = new Production();
			p.Symbols.Add(new Terminal('x'));
			Assert.AreEqual(0, p.Symbols.Count);
		}
	}
}