//
//  ASLayoutElementStyleTests.mm
//  AsyncDisplayKit
//
//  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 <XCTest/XCTest.h>
#import "ASLayoutElement.h"

#pragma mark - ASLayoutElementStyleTestsDelegate

@interface ASLayoutElementStyleTestsDelegate : NSObject<ASLayoutElementStyleDelegate>
@property (copy, nonatomic) NSString *propertyNameChanged;
@end

@implementation ASLayoutElementStyleTestsDelegate

- (void)style:(id)style propertyDidChange:(NSString *)propertyName
{
  self.propertyNameChanged = propertyName;
}

@end

#pragma mark - ASLayoutElementStyleTests

@interface ASLayoutElementStyleTests : XCTestCase

@end

@implementation ASLayoutElementStyleTests

- (void)testSettingSize
{
  ASLayoutElementStyle *style = [ASLayoutElementStyle new];
  
  style.width = ASDimensionMake(100);
  style.height = ASDimensionMake(100);
  XCTAssertTrue(ASDimensionEqualToDimension(style.width, ASDimensionMake(100)));
  XCTAssertTrue(ASDimensionEqualToDimension(style.height, ASDimensionMake(100)));
  
  style.minWidth = ASDimensionMake(100);
  style.minHeight = ASDimensionMake(100);
  XCTAssertTrue(ASDimensionEqualToDimension(style.width, ASDimensionMake(100)));
  XCTAssertTrue(ASDimensionEqualToDimension(style.height, ASDimensionMake(100)));
  
  style.maxWidth = ASDimensionMake(100);
  style.maxHeight = ASDimensionMake(100);
  XCTAssertTrue(ASDimensionEqualToDimension(style.width, ASDimensionMake(100)));
  XCTAssertTrue(ASDimensionEqualToDimension(style.height, ASDimensionMake(100)));
}

- (void)testSettingSizeViaCGSize
{
  ASLayoutElementStyle *style = [ASLayoutElementStyle new];
  
  CGSize size = CGSizeMake(100, 100);
  
  style.preferredSize = size;
  XCTAssertTrue(ASDimensionEqualToDimension(style.width, ASDimensionMakeWithPoints(size.width)));
  XCTAssertTrue(ASDimensionEqualToDimension(style.height, ASDimensionMakeWithPoints(size.height)));
  
  style.minSize = size;
  XCTAssertTrue(ASDimensionEqualToDimension(style.minWidth, ASDimensionMakeWithPoints(size.width)));
  XCTAssertTrue(ASDimensionEqualToDimension(style.minHeight, ASDimensionMakeWithPoints(size.height)));
  
  style.maxSize = size;
  XCTAssertTrue(ASDimensionEqualToDimension(style.maxWidth, ASDimensionMakeWithPoints(size.width)));
  XCTAssertTrue(ASDimensionEqualToDimension(style.maxHeight, ASDimensionMakeWithPoints(size.height)));
}

- (void)setSettingSizeViaRelativeSize
{
  ASLayoutElementStyle *style = [ASLayoutElementStyle new];
  
  ASRelativeSize relativeSize = ASRelativeSizeMake(ASDimensionMake(100), ASDimensionMake(100));
  
  style.preferredRelativeSize = relativeSize;
  XCTAssertTrue(ASDimensionEqualToDimension(style.width, relativeSize.width));
  XCTAssertTrue(ASDimensionEqualToDimension(style.height, relativeSize.height));
  XCTAssertTrue(ASDimensionEqualToDimension(style.preferredRelativeSize.width, relativeSize.width));
  XCTAssertTrue(ASDimensionEqualToDimension(style.preferredRelativeSize.height, relativeSize.height));
  
  style.minRelativeSize = relativeSize;
  XCTAssertTrue(ASDimensionEqualToDimension(style.minWidth, relativeSize.width));
  XCTAssertTrue(ASDimensionEqualToDimension(style.minHeight, relativeSize.height));
  XCTAssertTrue(ASDimensionEqualToDimension(style.minRelativeSize.width, relativeSize.width));
  XCTAssertTrue(ASDimensionEqualToDimension(style.minRelativeSize.height, relativeSize.height));
  
  style.maxRelativeSize = relativeSize;
  XCTAssertTrue(ASDimensionEqualToDimension(style.maxWidth, relativeSize.width));
  XCTAssertTrue(ASDimensionEqualToDimension(style.maxHeight, relativeSize.height));
  XCTAssertTrue(ASDimensionEqualToDimension(style.maxRelativeSize.width, relativeSize.width));
  XCTAssertTrue(ASDimensionEqualToDimension(style.maxRelativeSize.height, relativeSize.height));
}
  
- (void)testSettingPropertiesWillCallDelegate
{
  ASLayoutElementStyleTestsDelegate *delegate = [ASLayoutElementStyleTestsDelegate new];
  ASLayoutElementStyle *style = [[ASLayoutElementStyle alloc] initWithDelegate:delegate];
  XCTAssertTrue(ASDimensionEqualToDimension(style.width, ASDimensionAuto));
  style.width = ASDimensionMake(100);
  XCTAssertTrue(ASDimensionEqualToDimension(style.width, ASDimensionMake(100)));
  XCTAssertTrue([delegate.propertyNameChanged isEqualToString:ASLayoutElementStyleWidthProperty]);
}

@end