FlowScope/My project/Assets/FlowScope/Tests/EditMode/Resources/ResourceGroupTests.cs

using FlowScope.Resources;
using NUnit.Framework;

namespace FlowScope.Tests.EditMode.Resources
{
    public sealed class ResourceGroupTests
    {
        [Test]
        public void DisposeHandle_ReturnsNullAssetAndReleasesOnce()
        {
            var releaseCount = 0;
            var asset = new TestAsset();
            var handle = new ResourceHandle<TestAsset>(
                "ui/main",
                asset,
                (_, _) => releaseCount++);

            Assert.AreSame(asset, handle.Asset);

            handle.Dispose();
            handle.Dispose();

            Assert.IsTrue(handle.IsDisposed);
            Assert.IsNull(handle.Asset);
            Assert.AreEqual(1, releaseCount);
        }

        [Test]
        public void DisposeGroup_DisposesHandlesAndIgnoresDuplicateAdd()
        {
            var releaseCount = 0;
            var handle = new ResourceHandle<TestAsset>(
                "ui/main",
                new TestAsset(),
                (_, _) => releaseCount++);
            var group = new ResourceGroup();

            group.Add(handle);
            group.Add(handle);

            Assert.AreEqual(1, group.Count);

            group.Dispose();
            group.Dispose();

            Assert.AreEqual(0, group.Count);
            Assert.IsTrue(handle.IsDisposed);
            Assert.IsNull(handle.Asset);
            Assert.AreEqual(1, releaseCount);
        }

        private sealed class TestAsset
        {
        }
    }
}