Merge pull request #68601 from kavon/test-coverage-labelled-tuples

[test] add coverage for for-await over labelled tuples

Author: swift-ci

test/Concurrency/Runtime/async_taskgroup_is_asyncsequence.swift

@@ -55,6 +55,32 @@ func test_throwingTaskGroup_is_asyncSequence() async throws {
   print("result: \(sum)")
 }
 
+typealias LabelledTuple = (x: Int, y: Int)
+
+@available(SwiftStdlib 5.1, *)
+func test_asyncSequence_labelledTuples() async {
+  print(#function)
+
+  let sum = await withTaskGroup(of: LabelledTuple.self, returning: Int.self) { group in
+    for n in 1...10 {
+      group.spawn {
+        print("add (x: \(n), y: 1)")
+        return (x: n, y: 1)
+      }
+    }
+
+    var sum = 0
+    for await (x, y) in group { // here
+      print("next: (x:\(x), y:\(y))")
+      sum += x + y
+    }
+
+    return sum
+  }
+
+  print("result: \(sum)")
+}
+
 @available(SwiftStdlib 5.1, *)
 @main struct Main {
   static func main() async {
@@ -65,5 +91,9 @@ func test_throwingTaskGroup_is_asyncSequence() async throws {
     try! await test_throwingTaskGroup_is_asyncSequence()
     // CHECK: test_throwingTaskGroup_is_asyncSequence()
     // CHECK: result: 55
+
+    await test_asyncSequence_labelledTuples()
+    // CHECK: test_asyncSequence_labelledTuples()
+    // CHECK: result: 65
   }
 }