Added NSCopying to model

Author: Josh Holtz

Classes/JSONAPIResource.h

@@ -8,7 +8,7 @@
 
 #import <Foundation/Foundation.h>
 
-@interface JSONAPIResource : NSObject<NSCoding>
+@interface JSONAPIResource : NSObject<NSCopying, NSCoding>
 
 @property (nonatomic, strong) id ID;
 @property (nonatomic, strong) NSString *href;

Classes/JSONAPIResource.m

@@ -179,6 +179,19 @@ - (void)linkLinks:(NSDictionary*)linked {
     }
 }
 
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone {
+    id copy = [[[self class] alloc] initWithDictionary:[self.__dictionary copyWithZone:zone] withLinked:nil];
+    
+    if (copy) {
+        // Copy NSObject subclasses
+        [copy set__resourceLinks:[self.__resourceLinks copyWithZone:zone]];
+    }
+    
+    return copy;
+}
+
 #pragma mark - NSCoding
 
 - (NSArray *)propertyKeys

Project/JSONAPITests/JSONAPITests.m

@@ -313,4 +313,24 @@ - (void)testMapKeysToProperties {
     XCTAssertEqualObjects(postResource.author.name, [linkedAuthor9 objectForKey:@"name"], @"Author name is not equal to %@", [post objectForKey:@"name"]);
 }
 
+- (void)testCopying {
+    NSDictionary *meta = @{ @"page_number" : @1, @"number_of_pages" : @5};
+    NSDictionary *linkedAuthor9 = @{ @"id" : @9, @"name" : @"Josh" };
+    NSDictionary *linkedAuthor11 = @{ @"id" : @11, @"name" : @"Bandit" };
+    NSArray *linkedAuthors = @[ linkedAuthor9, linkedAuthor11 ];
+    NSDictionary *linked = @{ @"authors" : linkedAuthors };
+    NSDictionary *post = @{ @"id" : @1, @"name" : @"Josh is awesome", @"links" : @{ @"author" : @9 } };
+    NSArray *posts = @[ post ];
+    NSDictionary *json = @{ @"meta" : meta, @"linked" : linked, @"posts" : posts };
+    
+    JSONAPI *jsonAPI = [[JSONAPI alloc] initWithDictionary:json];
+    PostResource *postResource = [jsonAPI resourceForKey:@"posts"];
+    
+    PostResource *copyPostResource = [postResource copy];
+    
+    XCTAssertNotEqual(postResource, copyPostResource, @"Post is not equal to copy");
+    XCTAssertEqualObjects(postResource.name, copyPostResource.name, @"Post name is not equal to %@", copyPostResource.name);
+    XCTAssertEqualObjects(postResource.author.name, copyPostResource.author.name, @"Author name is not equal to %@", copyPostResource.author.name);
+}
+
 @end