using System;
using System.Collections.Generic;
using System.Text;
using NUnit.Framework;

namespace ScrewTurn.Wiki.SearchEngine.Tests {

	[TestFixture]
	public class DumpedChangeTests : TestsBase {

		[Test]
		public void Constructor() {
			DumpedChange change = new DumpedChange(
				new DumpedDocument(MockDocument("doc", "Docum", "d", DateTime.Now)),
				new List<DumpedWord>(new DumpedWord[] { new DumpedWord(1, "word") }),
				new List<DumpedWordMapping>(new DumpedWordMapping[] { new DumpedWordMapping(1, 1, 4, 1, WordLocation.Content.Location) }));

			Assert.AreEqual("doc", change.Document.Name, "Wrong name");
			Assert.AreEqual(1, change.Words.Count, "Wrong words count");
			Assert.AreEqual("word", change.Words[0].Text, "Wrong word");
			Assert.AreEqual(1, change.Mappings.Count, "Wrong mappings count");
			Assert.AreEqual(1, change.Mappings[0].WordID, "Wrong word index");
		}

		[Test]
		[ExpectedException(typeof(ArgumentNullException))]
		public void Constructor_NullDocument() {
			DumpedChange change = new DumpedChange(
				null,
				new List<DumpedWord>(new DumpedWord[] { new DumpedWord(1, "word") }),
				new List<DumpedWordMapping>(new DumpedWordMapping[] { new DumpedWordMapping(1, 1, 4, 1, WordLocation.Content.Location) }));
		}

		[Test]
		[ExpectedException(typeof(ArgumentNullException))]
		public void Constructor_NullWords() {
			DumpedChange change = new DumpedChange(
				new DumpedDocument(MockDocument("doc", "Docum", "d", DateTime.Now)),
				null,
				new List<DumpedWordMapping>(new DumpedWordMapping[] { new DumpedWordMapping(1, 1, 4, 1, WordLocation.Content.Location) }));
		}

		[Test]
		public void Constructor_EmptyWords() {
			// Words can be empty
			DumpedChange change = new DumpedChange(
				new DumpedDocument(MockDocument("doc", "Docum", "d", DateTime.Now)),
				new List<DumpedWord>(),
				new List<DumpedWordMapping>(new DumpedWordMapping[] { new DumpedWordMapping(1, 1, 4, 1, WordLocation.Content.Location) }));
		}

		[Test]
		[ExpectedException(typeof(ArgumentNullException))]
		public void Constructor_NullMappings() {
			DumpedChange change = new DumpedChange(
				new DumpedDocument(MockDocument("doc", "Docum", "d", DateTime.Now)),
				null,
				new List<DumpedWordMapping>(new DumpedWordMapping[] { new DumpedWordMapping(1, 1, 4, 1, WordLocation.Content.Location) }));
		}

		[Test]
		public void Constructor_EmptyMappings() {
			// Mappings can be empty
			DumpedChange change = new DumpedChange(
				new DumpedDocument(MockDocument("doc", "Docum", "d", DateTime.Now)),
				new List<DumpedWord>(new DumpedWord[] { new DumpedWord(1, "word") }),
				new List<DumpedWordMapping>());
		}

	}

}