Merge pull request #455 from apple/jgrynspan/sendable-handlers

Expectation handlers need to be @sendable. #454

Author: grynspan

Sources/XCTest/Public/Asynchronous/XCTNSNotificationExpectation.swift

@@ -19,7 +19,7 @@ open class XCTNSNotificationExpectation: XCTestExpectation {
     /// - Returns: `true` if the expectation should be fulfilled, `false` if it should not.
     ///
     /// - SeeAlso: `XCTNSNotificationExpectation.handler`
-    public typealias Handler = (Notification) -> Bool
+    public typealias Handler = @Sendable (Notification) -> Bool
 
     private let queue = DispatchQueue(label: "org.swift.XCTest.XCTNSNotificationExpectation")
 

Sources/XCTest/Public/Asynchronous/XCTNSPredicateExpectation.swift

@@ -18,7 +18,7 @@ open class XCTNSPredicateExpectation: XCTestExpectation {
     /// - Returns: `true` if the expectation should be fulfilled, `false` if it should not.
     ///
     /// - SeeAlso: `XCTNSPredicateExpectation.handler`
-    public typealias Handler = () -> Bool
+    public typealias Handler = @Sendable () -> Bool
 
     private let queue = DispatchQueue(label: "org.swift.XCTest.XCTNSPredicateExpectation")