namespace Geekeey.Extensions.Result.Tests;

[TestFixture]
internal sealed class ResultUnboxTests
{
	[Test]
	public void TryGetValue_1_ReturnsTrueAndSetsValue_ForSuccess()
	{
		var result = Success(2);
		var ok = result.TryGetValue(out var value);

		Assert.Multiple(() =>
		{
			Assert.That(ok, Is.True);
			Assert.That(value, Is.EqualTo(2));
		});
	}

	[Test]
	public void TryGetValue_1_ReturnsFalse_ForFailure()
	{
		var result = Failure<int>("error");
		var ok = result.TryGetValue(out var value);

		Assert.Multiple(() =>
		{
			Assert.That(ok, Is.False);
			Assert.That(value, Is.EqualTo(default(int)));
		});
	}

	[Test]
	public void TryGetValue_2_ReturnsTrueAndSetsValue_ForSuccess()
	{
		var result = Success(2);
		var ok = result.TryGetValue(out var value, out var error);

		Assert.Multiple(() =>
		{
			Assert.That(ok, Is.True);
			Assert.That(value, Is.EqualTo(2));
			Assert.That(error, Is.EqualTo(default(Error)));
		});
	}

	[Test]
	public void TryGetValue_2_ReturnsFalseAndSetsError_ForFailure()
	{
		var result = Failure<int>("error");
		var ok = result.TryGetValue(out var value, out var error);

		Assert.Multiple(() =>
		{
			Assert.That(ok, Is.False);
			Assert.That(value, Is.EqualTo(default(int)));
			Assert.That(error?.Message, Is.EqualTo("error"));
		});
	}

	[Test]
	public void TryGetError_1_ReturnsTrueAndSetsError_ForFailure()
	{
		var result = Failure<int>("error");
		var ok = result.TryGetError(out var error);

		Assert.Multiple(() =>
		{
			Assert.That(ok, Is.True);
			Assert.That(error?.Message, Is.EqualTo("error"));
		});
	}

	[Test]
	public void TryGetError_1_ReturnsFalse_ForSuccess()
	{
		var result = Success(2);
		var ok = result.TryGetError(out var error);

		Assert.Multiple(() =>
		{
			Assert.That(ok, Is.False);
			Assert.That(error, Is.EqualTo(default(Error)));
		});
	}

	[Test]
	public void TryGetError_2_ReturnsTrueAndSetsError_ForFailure()
	{
		var r = Failure<int>("error");
		var ok = r.TryGetError(out var error, out var value);

		Assert.Multiple(() =>
		{
			Assert.That(ok, Is.True);
			Assert.That(error?.Message, Is.EqualTo("error"));
			Assert.That(value, Is.EqualTo(default(int)));
		});
	}

	[Test]
	public void TryGetError_2_ReturnsFalseAndSetsValue_ForSuccess()
	{
		var r = Success(2);
		var ok = r.TryGetError(out var error, out var value);

		Assert.Multiple(() =>
		{
			Assert.That(ok, Is.False);
			Assert.That(error, Is.EqualTo(default(Error)));
			Assert.That(value, Is.EqualTo(2));
		});
	}
}