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ASImageNode tintColor improvements. (#1668)
* ASImageNode tintColor improvements. When ASImageNodes changes tintColor or enters the hierarchy, ensure -setNeedsDisplay is called if the image is templated. Add unit tests to ensure this behavior works.
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Greg Bolsinga
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Sep 12, 2019
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// | ||
// ASImageNodeTests.m | ||
// Texture | ||
// | ||
// Copyright (c) Pinterest, Inc. All rights reserved. | ||
// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0 | ||
// | ||
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#import <XCTest/XCTest.h> | ||
#import <OCMock/OCMock.h> | ||
#import <AsyncDisplayKit/ASImageNode.h> | ||
#import <AsyncDisplayKit/ASDisplayNode+Subclasses.h> | ||
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@interface ASImageTestNode : ASImageNode | ||
@property (nonatomic, readonly) NSUInteger setNeedsDisplayCount; | ||
@end | ||
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@implementation ASImageTestNode | ||
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- (void)setNeedsDisplay | ||
{ | ||
// Do not call super so that the background mechanics do not fire up. | ||
_setNeedsDisplayCount += 1; | ||
} | ||
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@end | ||
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@interface ASImageNodeTests : XCTestCase | ||
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@end | ||
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@implementation ASImageNodeTests | ||
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- (void)testImage_didEnterHierarchy | ||
{ | ||
id imageMock = OCMClassMock(UIImage.class); | ||
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ASImageTestNode *imageNode = [[ASImageTestNode alloc] init]; | ||
imageNode.layerBacked = YES; | ||
imageNode.image = imageMock; | ||
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CALayer *layer = imageNode.layer; | ||
XCTAssertNotNil(layer); | ||
id<CALayerDelegate> layerDelegate = layer.delegate; | ||
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NSUInteger initialSetNeedsDisplayCount = imageNode.setNeedsDisplayCount; | ||
XCTAssertEqual(initialSetNeedsDisplayCount, 1); | ||
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[layerDelegate actionForLayer:layer forKey:kCAOnOrderIn]; | ||
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XCTAssertEqual(imageNode.setNeedsDisplayCount, initialSetNeedsDisplayCount); | ||
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[layerDelegate actionForLayer:layer forKey:kCAOnOrderOut]; | ||
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[imageMock stopMocking]; | ||
} | ||
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- (void)testTemplateImage_didEnterHierarchy | ||
{ | ||
id imageMock = OCMClassMock(UIImage.class); | ||
OCMStub([imageMock renderingMode]).andReturn(UIImageRenderingModeAlwaysTemplate); | ||
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ASImageTestNode *imageNode = [[ASImageTestNode alloc] init]; | ||
imageNode.layerBacked = YES; | ||
imageNode.image = imageMock; | ||
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CALayer *layer = imageNode.layer; | ||
XCTAssertNotNil(layer); | ||
id<CALayerDelegate> layerDelegate = layer.delegate; | ||
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NSUInteger initialSetNeedsDisplayCount = imageNode.setNeedsDisplayCount; | ||
XCTAssertEqual(initialSetNeedsDisplayCount, 1); | ||
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[layerDelegate actionForLayer:layer forKey:kCAOnOrderIn]; | ||
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XCTAssertEqual(imageNode.setNeedsDisplayCount, initialSetNeedsDisplayCount + 1); | ||
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[layerDelegate actionForLayer:layer forKey:kCAOnOrderOut]; | ||
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[imageMock stopMocking]; | ||
} | ||
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- (void)testImage_tintColorDidChange | ||
{ | ||
id imageMock = OCMClassMock(UIImage.class); | ||
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ASImageTestNode *imageNode = [[ASImageTestNode alloc] init]; | ||
imageNode.image = imageMock; | ||
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NSUInteger initialSetNeedsDisplayCount = imageNode.setNeedsDisplayCount; | ||
XCTAssertEqual(initialSetNeedsDisplayCount, 1); | ||
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[imageNode tintColorDidChange]; | ||
XCTAssertEqual(imageNode.setNeedsDisplayCount, initialSetNeedsDisplayCount); | ||
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[imageMock stopMocking]; | ||
} | ||
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- (void)testTemplateImage_tintColorDidChange | ||
{ | ||
id imageMock = OCMClassMock(UIImage.class); | ||
OCMStub([imageMock renderingMode]).andReturn(UIImageRenderingModeAlwaysTemplate); | ||
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ASImageTestNode *imageNode = [[ASImageTestNode alloc] init]; | ||
imageNode.image = imageMock; | ||
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NSUInteger initialSetNeedsDisplayCount = imageNode.setNeedsDisplayCount; | ||
XCTAssertEqual(initialSetNeedsDisplayCount, 1); | ||
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[imageNode tintColorDidChange]; | ||
XCTAssertEqual(imageNode.setNeedsDisplayCount, initialSetNeedsDisplayCount + 1); | ||
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[imageMock stopMocking]; | ||
} | ||
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@end |