Merge pull request #486 from Cysharp/hadashiA/inner-ex

Use innerException for `Task.AsUniTask`

src/UniTask.NetCoreTests/TaskExtensionsTest.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Threading.Tasks;
+using Cysharp.Threading.Tasks;
+using Xunit;
+
+namespace NetCoreTests
+{
+    public class TaskExtensionsTest
+    {
+        [Fact]
+        public async Task PropagateException()
+        {
+            await Assert.ThrowsAsync<InvalidOperationException>(async () =>
+            {
+                await ThrowAsync().AsUniTask();
+            });
+            
+            await Assert.ThrowsAsync<InvalidOperationException>(async () =>
+            {
+                await ThrowOrValueAsync().AsUniTask();
+            });
+        }
+ 
+        async Task ThrowAsync()
+        {
+            throw new InvalidOperationException();
+        }
+
+        async Task<int> ThrowOrValueAsync()
+        {
+            throw new InvalidOperationException();
+        }
+   }
+}

src/UniTask/Assets/Plugins/UniTask/Runtime/UniTaskExtensions.cs

@@ -28,7 +28,7 @@ namespace Cysharp.Threading.Tasks
                         p.TrySetCanceled();
                         break;
                     case TaskStatus.Faulted:
-                        p.TrySetException(x.Exception);
+                        p.TrySetException(x.Exception.InnerExceptions.Count == 1 ? x.Exception.InnerException : x.Exception);
                         break;
                     case TaskStatus.RanToCompletion:
                         p.TrySetResult(x.Result);
@@ -58,7 +58,7 @@ namespace Cysharp.Threading.Tasks
                         p.TrySetCanceled();
                         break;
                     case TaskStatus.Faulted:
-                        p.TrySetException(x.Exception);
+                        p.TrySetException(x.Exception.InnerExceptions.Count == 1 ? x.Exception.InnerException : x.Exception);
                         break;
                     case TaskStatus.RanToCompletion:
                         p.TrySetResult();