react-native/RNTester/RNTesterUnitTests/RCTImageLoaderTests.m

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/**
* Copyright (c) 2015-present, Facebook, Inc.
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*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
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*
*/
#import <XCTest/XCTest.h>
#import <React/RCTBridge.h>
#import <React/RCTImageLoader.h>
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#import "RCTImageLoaderHelpers.h"
unsigned char blackGIF[] = {
0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x01, 0x00, 0x01, 0x00, 0x80, 0x00,
0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x2c, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x01, 0x00, 0x00, 0x02, 0x02, 0x44, 0x01, 0x00, 0x3b
};
RCTDefineImageURLLoader(RCTImageLoaderTestsURLLoader1)
RCTDefineImageURLLoader(RCTImageLoaderTestsURLLoader2)
RCTDefineImageDecoder(RCTImageLoaderTestsDecoder1)
RCTDefineImageDecoder(RCTImageLoaderTestsDecoder2)
@interface RCTImageLoaderTests : XCTestCase
@end
@implementation RCTImageLoaderTests {
NSURL *_bundleURL;
}
- (void)setUp
{
NSBundle *bundle = [NSBundle bundleForClass:[self class]];
_bundleURL = [bundle URLForResource:@"RNTesterUnitTestsBundle" withExtension:@"js"];
}
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- (void)testImageLoading
{
UIImage *image = [UIImage new];
id<RCTImageURLLoader> loader = [[RCTImageLoaderTestsURLLoader1 alloc] initWithPriority:1.0 canLoadImageURLHandler:^BOOL(__unused NSURL *requestURL) {
return YES;
} loadImageURLHandler:^RCTImageLoaderCancellationBlock(__unused NSURL *imageURL, __unused CGSize size, __unused CGFloat scale, __unused RCTResizeMode resizeMode, RCTImageLoaderProgressBlock progressHandler, RCTImageLoaderCompletionBlock completionHandler) {
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progressHandler(1, 1);
completionHandler(nil, image);
return nil;
}];
NS_VALID_UNTIL_END_OF_SCOPE RCTBridge *bridge = [[RCTBridge alloc] initWithBundleURL:_bundleURL moduleProvider:^{ return @[loader]; } launchOptions:nil];
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NSURLRequest *urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://facebook.github.io/react-native/img/opengraph.png"]];
[bridge.imageLoader loadImageWithURLRequest:urlRequest size:CGSizeMake(100, 100) scale:1.0 clipped:YES resizeMode:RCTResizeModeContain progressBlock:^(int64_t progress, int64_t total) {
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XCTAssertEqual(progress, 1);
XCTAssertEqual(total, 1);
} partialLoadBlock:nil completionBlock:^(NSError *loadError, id loadedImage) {
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XCTAssertEqualObjects(loadedImage, image);
XCTAssertNil(loadError);
}];
}
- (void)testImageLoaderUsesImageURLLoaderWithHighestPriority
{
UIImage *image = [UIImage new];
id<RCTImageURLLoader> loader1 = [[RCTImageLoaderTestsURLLoader1 alloc] initWithPriority:1.0 canLoadImageURLHandler:^BOOL(__unused NSURL *requestURL) {
return YES;
} loadImageURLHandler:^RCTImageLoaderCancellationBlock(__unused NSURL *imageURL, __unused CGSize size, __unused CGFloat scale, __unused RCTResizeMode resizeMode, RCTImageLoaderProgressBlock progressHandler, RCTImageLoaderCompletionBlock completionHandler) {
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progressHandler(1, 1);
completionHandler(nil, image);
return nil;
}];
id<RCTImageURLLoader> loader2 = [[RCTImageLoaderTestsURLLoader2 alloc] initWithPriority:0.5 canLoadImageURLHandler:^BOOL(__unused NSURL *requestURL) {
return YES;
} loadImageURLHandler:^RCTImageLoaderCancellationBlock(__unused NSURL *imageURL, __unused CGSize size, __unused CGFloat scale, __unused RCTResizeMode resizeMode, __unused RCTImageLoaderProgressBlock progressHandler, __unused RCTImageLoaderCompletionBlock completionHandler) {
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XCTFail(@"Should not have used loader2");
return nil;
}];
NS_VALID_UNTIL_END_OF_SCOPE RCTBridge *bridge = [[RCTBridge alloc] initWithBundleURL:_bundleURL moduleProvider:^{ return @[loader1, loader2]; } launchOptions:nil];
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NSURLRequest *urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://facebook.github.io/react-native/img/opengraph.png"]];
[bridge.imageLoader loadImageWithURLRequest:urlRequest size:CGSizeMake(100, 100) scale:1.0 clipped:YES resizeMode:RCTResizeModeContain progressBlock:^(int64_t progress, int64_t total) {
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XCTAssertEqual(progress, 1);
XCTAssertEqual(total, 1);
} partialLoadBlock:nil completionBlock:^(NSError *loadError, id loadedImage) {
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XCTAssertEqualObjects(loadedImage, image);
XCTAssertNil(loadError);
}];
}
- (void)testImageDecoding
{
NSData *data = [NSData dataWithBytesNoCopy:blackGIF length:sizeof(blackGIF) freeWhenDone:NO];
UIImage *image = [[UIImage alloc] initWithData:data];
id<RCTImageDataDecoder> decoder = [[RCTImageLoaderTestsDecoder1 alloc] initWithPriority:1.0 canDecodeImageDataHandler:^BOOL(__unused NSData *imageData) {
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return YES;
} decodeImageDataHandler:^RCTImageLoaderCancellationBlock(NSData *imageData, __unused CGSize size, __unused CGFloat scale, __unused RCTResizeMode resizeMode, RCTImageLoaderCompletionBlock completionHandler) {
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XCTAssertEqualObjects(imageData, data);
completionHandler(nil, image);
return nil;
}];
NS_VALID_UNTIL_END_OF_SCOPE RCTBridge *bridge = [[RCTBridge alloc] initWithBundleURL:_bundleURL moduleProvider:^{ return @[decoder]; } launchOptions:nil];
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RCTImageLoaderCancellationBlock cancelBlock = [bridge.imageLoader decodeImageData:data size:CGSizeMake(1, 1) scale:1.0 clipped:NO resizeMode:RCTResizeModeStretch completionBlock:^(NSError *decodeError, id decodedImage) {
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XCTAssertEqualObjects(decodedImage, image);
XCTAssertNil(decodeError);
}];
XCTAssertNotNil(cancelBlock);
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}
- (void)testImageLoaderUsesImageDecoderWithHighestPriority
{
NSData *data = [NSData dataWithBytesNoCopy:blackGIF length:sizeof(blackGIF) freeWhenDone:NO];
UIImage *image = [[UIImage alloc] initWithData:data];
id<RCTImageDataDecoder> decoder1 = [[RCTImageLoaderTestsDecoder1 alloc] initWithPriority:1.0 canDecodeImageDataHandler:^BOOL(__unused NSData *imageData) {
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return YES;
} decodeImageDataHandler:^RCTImageLoaderCancellationBlock(NSData *imageData, __unused CGSize size, __unused CGFloat scale, __unused RCTResizeMode resizeMode, RCTImageLoaderCompletionBlock completionHandler) {
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XCTAssertEqualObjects(imageData, data);
completionHandler(nil, image);
return nil;
}];
id<RCTImageDataDecoder> decoder2 = [[RCTImageLoaderTestsDecoder2 alloc] initWithPriority:0.5 canDecodeImageDataHandler:^BOOL(__unused NSData *imageData) {
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return YES;
} decodeImageDataHandler:^RCTImageLoaderCancellationBlock(__unused NSData *imageData, __unused CGSize size, __unused CGFloat scale, __unused RCTResizeMode resizeMode, __unused RCTImageLoaderCompletionBlock completionHandler) {
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XCTFail(@"Should not have used decoder2");
return nil;
}];
NS_VALID_UNTIL_END_OF_SCOPE RCTBridge *bridge = [[RCTBridge alloc] initWithBundleURL:_bundleURL moduleProvider:^{ return @[decoder1, decoder2]; } launchOptions:nil];
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RCTImageLoaderCancellationBlock cancelBlock = [bridge.imageLoader decodeImageData:data size:CGSizeMake(1, 1) scale:1.0 clipped:NO resizeMode:RCTResizeModeStretch completionBlock:^(NSError *decodeError, id decodedImage) {
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XCTAssertEqualObjects(decodedImage, image);
XCTAssertNil(decodeError);
}];
XCTAssertNotNil(cancelBlock);
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}
@end