Add TempFile helper

libs/UIX.Test/Assembly.cs

@@ -41,22 +41,17 @@ main:
     [InlineData("text.uix")]
     [InlineData("testA.uix")]
     [InlineData("testB.uix")]
-    public async Task Disassemble(string fileName)
+    public async Task Disassemble(string testResourceName)
     {
-        string tempFilePath = Path.GetTempFileName();
-        string uri = "file://" + tempFilePath;
+        using TempFile tempFile = new(testResourceName);
+        await tempFile.InitAsync();
 
-        // Copy the test data to a temporary file because Iris can only load from a URI.
-        var testFileBytes = (byte[])TestResources.ResourceManager.GetObject(fileName)!;
-        await File.WriteAllBytesAsync(tempFilePath, testFileBytes);
+        string uri = "file://" + tempFile.Path;
 
         var sourceLoadResult = MarkupSystem.ResolveLoadResult(uri, MarkupSystem.RootIslandId);
         var dis = Disassembler.Load(sourceLoadResult as MarkupLoadResult);
 
         var disText = dis.Write();
         output.WriteLine(disText);
-
-        // Clean up temporary file
-        File.Delete(tempFilePath);
     }
 }

libs/UIX.Test/GlobalUsings.cs

@@ -1 +1,2 @@
+global using UIX.Test.Helpers;
 global using Xunit;

libs/UIX.Test/Helpers/TempFile.cs

@@ -0,0 +1,48 @@
+using OwlCore.ComponentModel;
+using System.Diagnostics.CodeAnalysis;
+
+namespace UIX.Test.Helpers;
+
+internal class TempFile : IDisposable, IAsyncInit
+{
+    private readonly Func<Task> _init;
+
+    public TempFile(System.Resources.ResourceManager resourceManager, string resourceName)
+        : this((byte[])resourceManager.GetObject(resourceName)!)
+    { 
+    }
+
+    public TempFile(string resourceName) : this(TestResources.ResourceManager, resourceName)
+    {
+    }
+
+    public TempFile(byte[] data)
+    {
+        _init = async delegate
+        {
+            // Copy the test data to a temporary file because Iris can only load from a URI.
+            Path = System.IO.Path.GetTempFileName();
+            await File.WriteAllBytesAsync(Path, data);
+        };
+    }
+
+    public string? Path { get; private set; }
+
+    [MemberNotNullWhen(true, nameof(Path))]
+    public bool IsInitialized { get; private set; }
+
+    public void Dispose()
+    {
+        if (!IsInitialized) return;
+
+        File.Delete(Path);
+    }
+
+    [MemberNotNull(nameof(Path))]
+    public async Task InitAsync(CancellationToken cancellationToken = default)
+    {
+#pragma warning disable CS8774 // Member must have a non-null value when exiting.
+        await _init();
+#pragma warning restore CS8774 // Member must have a non-null value when exiting.
+    }
+}

libs/UIX.Test/UIX.Test.csproj

@@ -11,6 +11,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0" />
+        <PackageReference Include="OwlCore.ComponentModel" Version="0.6.0" />
         <PackageReference Include="xunit" Version="2.4.2" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>