Merge pull request #1647 from lorentey/NSLocale.hash

Author: swift-ci

Foundation/NSLocale.swift

@@ -69,7 +69,11 @@ open class NSLocale: NSObject, NSCopying, NSSecureCoding {
 
         return locale.localeIdentifier == localeIdentifier
     }
-    
+
+    override open var hash: Int {
+        return localeIdentifier.hash
+    }
+
     open func encode(with aCoder: NSCoder) {
         guard aCoder.allowsKeyedCoding else {
             preconditionFailure("Unkeyed coding is unsupported.")

TestFoundation/TestNSLocale.swift

@@ -13,6 +13,7 @@ class TestNSLocale : XCTestCase {
             ("test_constants", test_constants),
             ("test_Identifier", test_Identifier),
             ("test_copy", test_copy),
+            ("test_hash", test_hash),
             ("test_staticProperties", test_staticProperties),
             ("test_localeProperties", test_localeProperties),
         ]
@@ -102,6 +103,14 @@ class TestNSLocale : XCTestCase {
         XCTAssertTrue(locale == localeCopy)
     }
 
+    func test_hash() {
+        let a1 = Locale(identifier: "en_US")
+        let a2 = Locale(identifier: "en_US")
+
+        XCTAssertEqual(a1, a2)
+        XCTAssertEqual(a1.hashValue, a2.hashValue)
+    }
+
     func test_staticProperties() {
         let euroCurrencyCode = "EUR"
         let spainRegionCode = "ES"