ASLayoutSpecSnapshotTestsHelper.h

/*
 *  Copyright (c) 2015-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 "ASSnapshotTestCase.h"
#import "ASDisplayNode+Subclasses.h"

@class ASLayoutSpec;

@interface ASLayoutSpecSnapshotTestCase: ASSnapshotTestCase
/**
 Test the layout spec or records a snapshot if recordMode is YES.
 @param layoutSpec The layout spec under test or to snapshot
 @param sizeRange The size range used to calculate layout of the given layout spec.
 @param subnodes An array of ASDisplayNodes used within the layout spec.
 @param identifier An optional identifier, used to identify this snapshot test.
 
 @discussion In order to make the layout spec visible, it is embeded to a ASDisplayNode host.
 Any subnodes used within the layout spec must be provided.
 They will be added to the host in the same order as the array.
 */
- (void)testLayoutSpec:(ASLayoutSpec *)layoutSpec
             sizeRange:(ASSizeRange)sizeRange
              subnodes:(NSArray *)subnodes
            identifier:(NSString *)identifier;
@end

@interface ASStaticSizeDisplayNode : ASDisplayNode

@property (nonatomic) CGSize staticSize;

@end

static inline ASStaticSizeDisplayNode *ASDisplayNodeWithBackgroundColor(UIColor *backgroundColor)
{
  ASStaticSizeDisplayNode *node = [[ASStaticSizeDisplayNode alloc] init];
  node.layerBacked = YES;
  node.backgroundColor = backgroundColor;
  node.staticSize = CGSizeZero;
  return node;
}