using System;
using System.Collections.Generic;
using NUnit.Framework;
using Sarand.Net.Standard.Base.Data;

namespace Sacs.UnitTests.Net.Standard.Base.Data
{
	[TestFixture]
	public class SacsCsvHandler_Tester
	{
		// --- Tests ---

		[Test]
		public void ParseCsvRecord_FieldCount ()
		{
			Assert.That(SacsCsvHandler.ParseCsvRecord(null).Count, Is.EqualTo(0));
			Assert.That(SacsCsvHandler.ParseCsvRecord("").Count, Is.EqualTo(1));
			Assert.That(SacsCsvHandler.ParseCsvRecord(",").Count, Is.EqualTo(2));
			Assert.That(SacsCsvHandler.ParseCsvRecord("A,B,C").Count, Is.EqualTo(3));
			Assert.That(SacsCsvHandler.ParseCsvRecord("A,B,C,D,E").Count, Is.EqualTo(5));
		}

		[Test]
		public void ParseCsvRecord_Simple_NoText ()
		{
			String data = "A,B,C";
			List<String> fields = SacsCsvHandler.ParseCsvRecord(data);
			Assert.That(fields.Count, Is.EqualTo(3));
			Assert.That(fields[1], Is.EqualTo("B"));
		}

		[Test]
		public void ParseCsvRecord_Text_Simple ()
		{
			List<String> fields = SacsCsvHandler.ParseCsvRecord("A,\"B\",C");
			Assert.That(fields.Count, Is.EqualTo(3));
			Assert.That(fields[0], Is.EqualTo("A"));
			Assert.That(fields[1], Is.EqualTo("B"));
			Assert.That(fields[2], Is.EqualTo("C"));

			fields = SacsCsvHandler.ParseCsvRecord("A,\"B\",\"C\"");
			Assert.That(fields.Count, Is.EqualTo(3));
			Assert.That(fields[0], Is.EqualTo("A"));
			Assert.That(fields[1], Is.EqualTo("B"));
			Assert.That(fields[2], Is.EqualTo("C"));
		}

		[Test]
		public void ParseCsvRecord_Text_WithFieldDelim ()
		{
			List<String> fields = SacsCsvHandler.ParseCsvRecord("A,\",\",C");
			Assert.That(fields.Count, Is.EqualTo(3));
			Assert.That(fields[0], Is.EqualTo("A"));
			Assert.That(fields[1], Is.EqualTo(","));
			Assert.That(fields[2], Is.EqualTo("C"));
		}

		[Test]
		public void ParseCsvRecord_Text_EmbeddedTextDelims ()
		{
			List<String> fields = SacsCsvHandler.ParseCsvRecord("A,\"\"\"\",C");
			Assert.That(fields.Count, Is.EqualTo(3));
			Assert.That(fields[0], Is.EqualTo("A"));
			Assert.That(fields[1], Is.EqualTo("\""));
			Assert.That(fields[2], Is.EqualTo("C"));
		}

		// --- The End ---
	}
}