Merge pull request swiftlang#1447 from gmilos/rdar-37462656-data-nskeyedunarchiver-fix

Author: swift-ci

TestFoundation/TestNSData.swift

@@ -503,6 +503,7 @@ class TestNSData: LoopbackServerTest {
             ("test_validateMutation_slice_customBacking_withUnsafeMutableBytes_lengthLessThanLowerBound", test_validateMutation_slice_customBacking_withUnsafeMutableBytes_lengthLessThanLowerBound),
             ("test_validateMutation_slice_customMutableBacking_withUnsafeMutableBytes_lengthLessThanLowerBound",
              test_validateMutation_slice_customMutableBacking_withUnsafeMutableBytes_lengthLessThanLowerBound),
+            ("test_nskeyedarchiving", test_nskeyedarchiving),
             ("test_discontiguousEnumerateBytes", test_discontiguousEnumerateBytes),
             ("testBridgingCustom", testBridgingCustom),
             ("testCustomData", testCustomData),
@@ -4452,5 +4453,18 @@ extension TestNSData {
         let range = slice.range(of: "a".data(using: .ascii)!)
         XCTAssertEqual(range, Range<Data.Index>(4..<5))
     }
+
+    func test_nskeyedarchiving() {
+        let bytes: [UInt8] = [0xd, 0xe, 0xa, 0xd, 0xb, 0xe, 0xe, 0xf]
+        let data = NSData(bytes: bytes, length: bytes.count)
+
+        let archiver = NSKeyedArchiver()
+        data.encode(with: archiver)
+        let encodedData = archiver.encodedData
+
+        let unarchiver = NSKeyedUnarchiver(forReadingWith: encodedData)
+        let decodedData = NSData(coder: unarchiver)
+        XCTAssertEqual(data, decodedData)
+    }
 }