Swiftgram/AsyncDisplayKitTests/ASImageNodeSnapshotTests.m
Michael Schneider a71a1d8519 Address comments
2016-11-19 06:43:46 -08:00

89 lines
3.0 KiB
Objective-C

//
// ASImageNodeSnapshotTests.m
// 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 "ASSnapshotTestCase.h"
#import <AsyncDisplayKit/AsyncDisplayKit.h>
@interface ASImageNodeSnapshotTests : ASSnapshotTestCase
@end
@implementation ASImageNodeSnapshotTests
- (UIImage *)testImage
{
NSString *path = [[NSBundle bundleForClass:[self class]] pathForResource:@"logo-square"
ofType:@"png"
inDirectory:@"TestResources"];
return [UIImage imageWithContentsOfFile:path];
}
- (void)testRenderLogoSquare
{
// trivial test case to ensure ASSnapshotTestCase works
ASImageNode *imageNode = [[ASImageNode alloc] init];
imageNode.image = [self testImage];
ASDisplayNodeSizeToFitSize(imageNode, CGSizeMake(100, 100));
ASSnapshotVerifyNode(imageNode, nil);
}
- (void)testForcedScaling
{
CGSize forcedImageSize = CGSizeMake(100, 100);
ASImageNode *imageNode = [[ASImageNode alloc] init];
imageNode.forcedSize = forcedImageSize;
imageNode.image = [self testImage];
// Snapshot testing requires that node is formally laid out.
imageNode.style.width = ASDimensionMake(forcedImageSize.width);
imageNode.style.height = ASDimensionMake(forcedImageSize.height);
ASDisplayNodeSizeToFitSize(imageNode, forcedImageSize);
ASSnapshotVerifyNode(imageNode, @"first");
imageNode.style.width = ASDimensionMake(200);
imageNode.style.height = ASDimensionMake(200);
ASDisplayNodeSizeToFitSize(imageNode, CGSizeMake(200, 200));
ASSnapshotVerifyNode(imageNode, @"second");
XCTAssert(CGImageGetWidth((CGImageRef)imageNode.contents) == forcedImageSize.width * imageNode.contentsScale &&
CGImageGetHeight((CGImageRef)imageNode.contents) == forcedImageSize.height * imageNode.contentsScale,
@"Contents should be 100 x 100 by contents scale.");
}
- (void)testTintColorBlock
{
UIImage *test = [self testImage];
UIImage *tinted = ASImageNodeTintColorModificationBlock([UIColor redColor])(test);
ASImageNode *node = [[ASImageNode alloc] init];
node.image = tinted;
ASDisplayNodeSizeToFitSize(node, test.size);
ASSnapshotVerifyNode(node, nil);
}
- (void)testRoundedCornerBlock
{
UIGraphicsBeginImageContext(CGSizeMake(100, 100));
[[UIColor blueColor] setFill];
UIRectFill(CGRectMake(0, 0, 100, 100));
UIImage *result = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImage *rounded = ASImageNodeRoundBorderModificationBlock(2, [UIColor redColor])(result);
ASImageNode *node = [[ASImageNode alloc] init];
node.image = rounded;
ASDisplayNodeSizeToFitSize(node, rounded.size);
ASSnapshotVerifyNode(node, nil);
}
@end