wip, adding play button functionality

AsyncDisplayKitTests/ASVideoNodeTests.m

@@ -0,0 +1,45 @@
+/* Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <UIKit/UIKit.h>
+#import <XCTest/XCTest.h>
+#import "ASVideoNode.h"
+
+@interface ASVideoNodeTests : XCTestCase
+
+@end
+
+@implementation ASVideoNodeTests
+
+- (void)testVideoNodeReplacesAVPlayerWhenNewURLIsSet {
+  ASVideoNode *videoNode = [[ASVideoNode alloc] init];
+  videoNode.asset = [AVAsset assetWithURL:[NSURL URLWithString:@"firstURL"]];
+  [videoNode fetchData];
+  AVPlayer *player = ((AVPlayerLayer *)videoNode.layer).player;
+  
+  videoNode.asset = [AVAsset assetWithURL:[NSURL URLWithString:@"secondURL"]];
+  [videoNode fetchData];
+  AVPlayer *secondPlayer = ((AVPlayerLayer *)videoNode.layer).player;
+ 
+  XCTAssertNotEqualObjects(player, secondPlayer);
+}
+
+- (void)testVideoNodeDoesNotMakeNewPlayerWhenURLIsTheSame {
+  ASVideoNode *videoNode = [[ASVideoNode alloc] init];
+  videoNode.asset = [AVAsset assetWithURL:[NSURL URLWithString:@"firstURL"]];
+  [videoNode fetchData];
+  
+  AVPlayer *firstPlayer = ((AVPlayerLayer *)videoNode.layer).player;
+  videoNode.asset = [AVAsset assetWithURL:[NSURL URLWithString:@"firstURL"]];
+
+  AVPlayer *secondPlayer = ((AVPlayerLayer *)videoNode.layer).player;
+  
+  XCTAssertEqualObjects(firstPlayer, secondPlayer);
+}
+
+@end