sharee.bike-App/SharedBusinessLogic.Tests/Model/Bikes/BikeInfoNS/DriveNS/BatteryNS/TestBatteryMutable.cs

using NUnit.Framework;
using ShareeBike.Model.Bikes.BikeInfoNS.DriveNS.BatteryNS;

namespace SharedBusinessLogic.Tests.Model.Bikes.BikeInfoNS.DriveNS.BatteryNS
{
	[TestFixture]
	public class TestBatteryMutable
	{
		[Test]
		public void TestCurrentChargeBars()
		{
			var battery = new BatteryMutable(new Battery.Builder {
				MaxChargeBars = 5,
				CurrentChargeBars = 1,
				CurrentChargePercent = 20.0
			}.Build());

			battery.CurrentChargeBars = 4;

			Assert.That(
				battery.CurrentChargeBars,
				Is.EqualTo(4));

			Assert.That(
				battery.CurrentChargePercent,
				Is.EqualTo(80.0));
		}

		[Test]
		public void TestCurrentChargeBarsNull()
		{
			var battery = new BatteryMutable(new Battery.Builder
			{
				MaxChargeBars = 5,
				CurrentChargeBars = 1,
				CurrentChargePercent = 20.0
			}.Build());

			battery.CurrentChargeBars = null;

			Assert.That(
				battery.CurrentChargeBars,
				Is.Null);

			Assert.That(
				battery.CurrentChargePercent,
				Is.EqualTo(double.NaN));
		}

		[Test]
		public void TestCurrentChargeBarsInvalidStateZero()
		{
			var battery = new BatteryMutable(new Battery.Builder
			{
				MaxChargeBars = 0, // Could lead to division by zero if not handled correctly.
				CurrentChargeBars = null,
				CurrentChargePercent = 20.0
			}.Build());

			battery.CurrentChargeBars = 4;

			Assert.That(
				battery.CurrentChargeBars,
				Is.Null);

			Assert.That(
				battery.CurrentChargePercent,
				Is.EqualTo(20.0));
		}


		[Test]
		public void TestCurrentChargeBarsInvalidStateNull()
		{
			var battery = new BatteryMutable(new Battery.Builder
			{
				MaxChargeBars = null,
				CurrentChargeBars = null,
				CurrentChargePercent = 20.0
			}.Build());

			battery.CurrentChargeBars = 4;

			Assert.That(
				battery.CurrentChargeBars,
				Is.Null);

			Assert.That(
				battery.CurrentChargePercent,
				Is.EqualTo(20.0));
		}
	}
}