UserDefaults deletes an object if nil is saved (#10)

* fixed
* podpec and changelog are updated
* style improvements in changelog

CHANGELOG.md

@@ -2,22 +2,28 @@
 
 ---
 
+## 0.2.1
+
+### Fix
+
+* `UserDefaults` deletes an object if nil is saved.
+
 ## 0.2.0
 
 ### Features
 
 * This release contains a public interface breaking change: methods to encode/decode objects are moved from the `Koting` protocol to `NSKeyedArchiver` and `NSKeyedUnarchiver` extensions.
-* UserDefaults extension.
+* `UserDefaults` extension.
 * Features section is added to the readme file.
-* NSKeyedArchiver extension.
-* NSKeyedUnarchiver extension.
+* `NSKeyedArchiver` extension.
+* `NSKeyedUnarchiver` extension.
 
 ## 0.1.1
 
 ### Features
 
-* Handy UserDefauls extension
-* More unit tests
+* Handy `UserDefauls` extension.
+* More unit tests.
 
 ## 0.1.0
 

Dekoter.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'Dekoter'
-  s.version          = '0.2.0'
+  s.version          = '0.2.1'
   s.summary          = "NSCoding's counterpart for Swift structs."
 
   s.description      = <<-DESC

Dekoter/Classes/UserDefaults+Dekoter.swift

@@ -34,10 +34,10 @@ public extension UserDefaults {
     ///   - value: The object which implements the `Koting` protocol to store in the defaults database.
     ///   - defaultName: The key with which to associate with the value.
     public func de_set(_ value: Koting?, forKey defaultName: String) {
-        guard let value = value else {
-            return
+        var data: Data? = nil
+        if let value = value {
+            data = NSKeyedArchiver.de_archivedData(withRootObject: value)
         }
-        let data = NSKeyedArchiver.de_archivedData(withRootObject: value)
         set(data, forKey: defaultName)
     }
 
@@ -48,10 +48,10 @@ public extension UserDefaults {
     ///   - value: The array of objects which implement the `Koting` protocol to store in the defaults database.
     ///   - defaultName: The key with which to associate with the array.
     public func de_set(_ value: [Koting]?, forKey defaultName: String) {
-        guard let value = value else {
-            return
+        var data: Data? = nil
+        if let value = value {
+            data = NSKeyedArchiver.de_archivedData(withRootObject: value)
         }
-        let data = NSKeyedArchiver.de_archivedData(withRootObject: value)
         set(data, forKey: defaultName)
     }
 

Example/Tests/UserDefaultTests.swift

@@ -36,6 +36,17 @@ class UserDefaultTests: XCTestCase {
         super.tearDown()
     }
 
+    func testUserDefaults_IfNilSaved_RemovesObject() {
+        let puff: Cat = Cat(name: "Puff", surname: nil, sex: .female, nationality: "US", birthPlace: nil)
+
+        userDefaults.de_set(puff, forKey: Key.cat)
+        userDefaults.de_set(nil as Cat?, forKey: Key.cat)
+
+        let cat: Cat? = userDefaults.de_object(forKey: Key.cat)
+        XCTAssertNil(cat)
+    }
+
+
     func testUserDefaults_IfNilSaved_ReturnsNil() {
         let missingCat: Cat? = userDefaults.de_object(forKey: Key.cat)
         XCTAssertNil(missingCat)