Stabilize iOS/watchOS/tvOS apps and add cross-platform audit remediation

SharedCore/Tests/SharedCoreWatchOSTests/BoundedFIFOQueueTests.swift

@@ -0,0 +1,36 @@
+import XCTest
+@testable import SharedCore
+
+final class BoundedFIFOQueueTests: XCTestCase {
+    func testDisconnectReconnectFlushPreservesOrder() {
+        var queue = BoundedFIFOQueue<Int>(maxCount: 5)
+
+        _ = queue.enqueue(10)
+        _ = queue.enqueue(20)
+        _ = queue.enqueue(30)
+
+        XCTAssertEqual(queue.dequeueAll(), [10, 20, 30])
+        XCTAssertTrue(queue.isEmpty)
+    }
+
+    func testOverflowDropsOldestPayloads() {
+        var queue = BoundedFIFOQueue<Int>(maxCount: 3)
+
+        XCTAssertEqual(queue.enqueue(1), 0)
+        XCTAssertEqual(queue.enqueue(2), 0)
+        XCTAssertEqual(queue.enqueue(3), 0)
+        XCTAssertEqual(queue.enqueue(4), 1)
+        XCTAssertEqual(queue.enqueue(5), 1)
+
+        XCTAssertEqual(queue.dequeueAll(), [3, 4, 5])
+    }
+
+    func testMaxCountHasLowerBoundOfOne() {
+        var queue = BoundedFIFOQueue<Int>(maxCount: 0)
+
+        _ = queue.enqueue(1)
+        XCTAssertEqual(queue.enqueue(2), 1)
+        XCTAssertEqual(queue.dequeueAll(), [2])
+    }
+}
+