From 1fd66df8afc31313825bd22ef8fe99ee94d54d9a Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Sat, 20 Jun 2026 13:50:45 +0000
Subject: [PATCH 1/2] Unwrap TargetInvocationException in async enumerable
 serialization tests

On Mono/tvOS, async iterator exceptions propagated through
JsonSerializer.SerializeAsyncEnumerable are wrapped in a
TargetInvocationException. The tests previously used
Assert.ThrowsAsync<InvalidOperationException> which fails when the
exception is wrapped.

Replace with Assert.ThrowsAnyAsync<Exception> followed by explicit
unwrapping of TargetInvocationException, then assert the inner exception
is InvalidOperationException. This works correctly on both CoreCLR
(direct exception) and Mono (wrapped exception).

Remove the [ActiveIssue] annotations that disabled these tests on Apple
Mobile Mono since the fix addresses the behavioral difference.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 .../tests/Common/AsyncEnumerableTests.cs          | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/libraries/System.Text.Json/tests/Common/AsyncEnumerableTests.cs b/src/libraries/System.Text.Json/tests/Common/AsyncEnumerableTests.cs
index 69f11d1324fefa..3e7f0946f41560 100644
--- a/src/libraries/System.Text.Json/tests/Common/AsyncEnumerableTests.cs
+++ b/src/libraries/System.Text.Json/tests/Common/AsyncEnumerableTests.cs
@@ -7,6 +7,7 @@
 using System.IO;
 using System.IO.Pipelines;
 using System.Linq;
+using System.Reflection;
 using System.Text.Json.Serialization.Metadata;
 using System.Threading;
 using System.Threading.Tasks;
@@ -841,7 +842,6 @@ static async IAsyncEnumerable<int> EmptyAsyncEnumerable()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/128766", typeof(PlatformDetection), nameof(PlatformDetection.IsAppleMobile), nameof(PlatformDetection.IsMonoRuntime))]
         public async Task SerializeAsyncEnumerable_TopLevelValues_PartialItemFailure_PriorItemsAreFullyWritten()
         {
             // When element serialization throws mid-item, items written prior to the failure
@@ -851,13 +851,17 @@ public async Task SerializeAsyncEnumerable_TopLevelValues_PartialItemFailure_Pri
 
             using MemoryStream stream = new();
 
-            await Assert.ThrowsAsync<InvalidOperationException>(() =>
+            Exception ex = await Assert.ThrowsAnyAsync<Exception>(() =>
                 JsonSerializer.SerializeAsyncEnumerable(
                     stream,
                     Items(),
                     ResolveJsonTypeInfo<ThrowingValue>(),
                     topLevelValues: true));
 
+            if (ex is TargetInvocationException { InnerException: { } inner })
+                ex = inner;
+            Assert.IsType<InvalidOperationException>(ex);
+
             string actual = Encoding.UTF8.GetString(stream.ToArray());
             Assert.Equal("{\"V\":1}\n{\"V\":2}\n", actual);
 
@@ -871,7 +875,6 @@ static async IAsyncEnumerable<ThrowingValue> Items()
         }
 
         [Fact]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/128766", typeof(PlatformDetection), nameof(PlatformDetection.IsAppleMobile), nameof(PlatformDetection.IsMonoRuntime))]
         public async Task SerializeAsyncEnumerable_PipeWriter_TopLevelValues_PartialItemFailure_PriorItemsAreFullyWritten()
         {
             // When element serialization throws mid-item, items written prior to the failure
@@ -916,7 +919,11 @@ public async Task SerializeAsyncEnumerable_PipeWriter_TopLevelValues_PartialItem
                 }
             });
 
-            await Assert.ThrowsAsync<InvalidOperationException>(() => writeTask);
+            Exception ex = await Assert.ThrowsAnyAsync<Exception>(() => writeTask);
+            if (ex is TargetInvocationException { InnerException: { } inner })
+                ex = inner;
+            Assert.IsType<InvalidOperationException>(ex);
+
             await pipe.Writer.CompleteAsync();
             byte[] bytes = await readerTask;
 

From 2de48bbf3a4d7ad052a4ef8fd2e7a89409b0bcbb Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Sat, 20 Jun 2026 13:50:49 +0000
Subject: [PATCH 2/2] ci: trigger checks