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/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
*/
#import <XCTest/XCTest.h>
#import <OCMock/OCMock.h>
#import <RCTAnimation/RCTNativeAnimatedNodesManager.h>
#import <RCTAnimation/RCTValueAnimatedNode.h>
#import <React/RCTUIManager.h>
static const NSTimeInterval FRAME_LENGTH = 1.0 / 60.0;
@interface RCTFakeDisplayLink : CADisplayLink
@end
@implementation RCTFakeDisplayLink
{
NSTimeInterval _timestamp;
}
- (instancetype)init
{
self = [super init];
if (self) {
_timestamp = 1124.1234143251; // Random
}
return self;
}
- (NSTimeInterval)timestamp
{
_timestamp += FRAME_LENGTH;
return _timestamp;
}
@end
@interface RCTFakeValueObserver : NSObject<RCTValueAnimatedNodeObserver>
@property (nonatomic, strong) NSMutableArray<NSNumber *> *calls;
@end
@implementation RCTFakeValueObserver
- (instancetype)init
{
self = [super init];
if (self) {
_calls = [NSMutableArray new];
}
return self;
}
- (void)animatedNode:(__unused RCTValueAnimatedNode *)node didUpdateValue:(CGFloat)value
{
[_calls addObject:@(value)];
}
@end
@interface RCTFakeEvent : NSObject<RCTEvent>
@end
@implementation RCTFakeEvent
{
NSArray *_arguments;
}
@synthesize eventName = _eventName;
@synthesize viewTag = _viewTag;
@synthesize coalescingKey = _coalescingKey;
- (instancetype)initWithName:(NSString *)name viewTag:(NSNumber *)viewTag arguments:(NSArray *)arguments
{
self = [super init];
if (self) {
_eventName = name;
_viewTag = viewTag;
_arguments = arguments;
}
return self;
}
- (NSArray *)arguments
{
return _arguments;
}
RCT_NOT_IMPLEMENTED(+ (NSString *)moduleDotMethod);
RCT_NOT_IMPLEMENTED(- (BOOL)canCoalesce);
RCT_NOT_IMPLEMENTED(- (id<RCTEvent>)coalesceWithEvent:(id<RCTEvent>)newEvent);
@end
static id RCTPropChecker(NSString *prop, NSNumber *value)
{
return [OCMArg checkWithBlock:^BOOL(NSDictionary<NSString *, NSNumber *> *props) {
BOOL match = fabs(props[prop].doubleValue - value.doubleValue) < FLT_EPSILON;
if (!match) {
NSLog(@"Props `%@` with value `%@` is not close to `%@`", prop, props[prop], value);
}
return match;
}];
}
@interface RCTNativeAnimatedNodesManagerTests : XCTestCase
@end
@implementation RCTNativeAnimatedNodesManagerTests
{
id _uiManager;
RCTNativeAnimatedNodesManager *_nodesManager;
RCTFakeDisplayLink *_displayLink;
}
- (void)setUp
{
[super setUp];
_uiManager = [OCMockObject niceMockForClass:[RCTUIManager class]];
_nodesManager = [[RCTNativeAnimatedNodesManager alloc] initWithUIManager:_uiManager];
_displayLink = [RCTFakeDisplayLink new];
}
/**
* Generates a simple animated nodes graph and attaches the props node to a given viewTag
* Parameter opacity is used as a initial value for the "opacity" attribute.
*
* Nodes are connected as follows (nodes IDs in parens):
* ValueNode(1) -> StyleNode(2) -> PropNode(3)
*/
- (void)createSimpleAnimatedView:(NSNumber *)viewTag withOpacity:(CGFloat)opacity
{
[_nodesManager createAnimatedNode:@1
config:@{@"type": @"value", @"value": @(opacity), @"offset": @0}];
[_nodesManager createAnimatedNode:@2
config:@{@"type": @"style", @"style": @{@"opacity": @1}}];
[_nodesManager createAnimatedNode:@3
config:@{@"type": @"props", @"props": @{@"style": @2}}];
[_nodesManager connectAnimatedNodes:@1 childTag:@2];
[_nodesManager connectAnimatedNodes:@2 childTag:@3];
[_nodesManager connectAnimatedNodeToView:@3 viewTag:viewTag viewName:@"UIView"];
}
- (void)testFramesAnimation
{
[self createSimpleAnimatedView:@1000 withOpacity:0];
NSArray<NSNumber *> *frames = @[@0, @0.2, @0.4, @0.6, @0.8, @1];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"frames", @"frames": frames, @"toValue": @1}
endCallback:nil];
for (NSNumber *frame in frames) {
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:@1000
viewName:@"UIView"
props:RCTPropChecker(@"opacity", frame)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:@1000
viewName:@"UIView"
props:RCTPropChecker(@"opacity", @1)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testFramesAnimationLoop
{
[self createSimpleAnimatedView:@1000 withOpacity:0];
NSArray<NSNumber *> *frames = @[@0, @0.2, @0.4, @0.6, @0.8, @1];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"frames", @"frames": frames, @"toValue": @1, @"iterations": @5}
endCallback:nil];
for (NSUInteger it = 0; it < 5; it++) {
for (NSNumber *frame in frames) {
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:@1000
viewName:@"UIView"
props:RCTPropChecker(@"opacity", frame)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
}
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:@1000
viewName:@"UIView"
props:RCTPropChecker(@"opacity", @1)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testNodeValueListenerIfNotListening
{
NSNumber *nodeId = @1;
[self createSimpleAnimatedView:@1000 withOpacity:0];
NSArray<NSNumber *> *frames = @[@0, @0.2, @0.4, @0.6, @0.8, @1];
RCTFakeValueObserver *observer = [RCTFakeValueObserver new];
[_nodesManager startListeningToAnimatedNodeValue:nodeId valueObserver:observer];
[_nodesManager startAnimatingNode:@1
nodeTag:nodeId
config:@{@"type": @"frames", @"frames": frames, @"toValue": @1}
endCallback:nil];
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(observer.calls.count, 1UL);
XCTAssertEqualObjects(observer.calls[0], @0);
[_nodesManager stopListeningToAnimatedNodeValue:nodeId];
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(observer.calls.count, 1UL);
}
- (void)testNodeValueListenerIfListening
{
NSNumber *nodeId = @1;
[self createSimpleAnimatedView:@1000 withOpacity:0];
NSArray<NSNumber *> *frames = @[@0, @0.2, @0.4, @0.6, @0.8, @1];
RCTFakeValueObserver *observer = [RCTFakeValueObserver new];
[_nodesManager startListeningToAnimatedNodeValue:nodeId valueObserver:observer];
[_nodesManager startAnimatingNode:@1
nodeTag:nodeId
config:@{@"type": @"frames", @"frames": frames, @"toValue": @1}
endCallback:nil];
for (NSUInteger i = 0; i < frames.count; i++) {
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(observer.calls.count, i + 1);
XCTAssertEqualWithAccuracy(observer.calls[i].doubleValue, frames[i].doubleValue, FLT_EPSILON);
}
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(observer.calls.count, 7UL);
XCTAssertEqualObjects(observer.calls[6], @1);
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(observer.calls.count, 7UL);
}
- (void)performSpringAnimationTestWithConfig:(NSDictionary*)config isCriticallyDamped:(BOOL)testForCriticallyDamped
{
[self createSimpleAnimatedView:@1000 withOpacity:0];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:config
endCallback:nil];
BOOL wasGreaterThanOne = NO;
CGFloat previousValue = 0;
__block CGFloat currentValue;
[[[_uiManager stub] andDo:^(NSInvocation *invocation) {
__unsafe_unretained NSDictionary<NSString *, NSNumber *> *props;
[invocation getArgument:&props atIndex:4];
currentValue = props[@"opacity"].doubleValue;
}] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
// Run for 3 seconds.
for (NSUInteger i = 0; i < 3 * 60; i++) {
[_nodesManager stepAnimations:_displayLink];
if (currentValue > 1) {
wasGreaterThanOne = YES;
}
// Verify that animation step is relatively small.
XCTAssertLessThan(fabs(currentValue - previousValue), 0.12);
previousValue = currentValue;
}
// Verify that we've reach the final value at the end of animation.
XCTAssertEqual(previousValue, 1.0);
// Verify that value has reached some maximum value that is greater than the final value (bounce).
if (testForCriticallyDamped) {
XCTAssertFalse(wasGreaterThanOne);
} else {
XCTAssertTrue(wasGreaterThanOne);
}
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testUnderdampedSpringAnimation
{
[self performSpringAnimationTestWithConfig:@{@"type": @"spring",
@"stiffness": @230.3,
@"damping": @22,
@"mass": @1,
@"initialVelocity": @0,
@"toValue": @1,
@"restSpeedThreshold": @0.001,
@"restDisplacementThreshold": @0.001,
@"overshootClamping": @NO}
isCriticallyDamped:NO];
}
- (void)testCritcallyDampedSpringAnimation
{
[self performSpringAnimationTestWithConfig:@{@"type": @"spring",
@"stiffness": @1000,
@"damping": @500,
@"mass": @3,
@"initialVelocity": @0,
@"toValue": @1,
@"restSpeedThreshold": @0.001,
@"restDisplacementThreshold": @0.001,
@"overshootClamping": @NO}
isCriticallyDamped:YES];
}
- (void)testDecayAnimation
{
[self createSimpleAnimatedView:@1000 withOpacity:0];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"decay",
@"velocity": @0.5,
@"deceleration": @0.998}
endCallback:nil];
__block CGFloat previousValue;
__block CGFloat currentValue;
CGFloat previousDiff = CGFLOAT_MAX;
[_nodesManager stepAnimations:_displayLink];
[[[_uiManager stub] andDo:^(NSInvocation *invocation) {
__unsafe_unretained NSDictionary<NSString *, NSNumber *> *props;
[invocation getArgument:&props atIndex:4];
currentValue = props[@"opacity"].doubleValue;
}] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
// Run 3 secs of animation.
for (NSUInteger i = 0; i < 3 * 60; i++) {
[_nodesManager stepAnimations:_displayLink];
CGFloat currentDiff = currentValue - previousValue;
// Verify monotonicity.
// Greater *or equal* because the animation stops during these 3 seconds.
XCTAssertGreaterThanOrEqual(currentValue, previousValue);
// Verify decay.
XCTAssertLessThanOrEqual(currentDiff, previousDiff);
previousValue = currentValue;
previousDiff = currentDiff;
}
// Should be done in 3 secs.
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testDecayAnimationLoop
{
[self createSimpleAnimatedView:@1000 withOpacity:0];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"decay",
@"velocity": @0.5,
@"deceleration": @0.998,
@"iterations": @5}
endCallback:nil];
__block CGFloat previousValue;
__block CGFloat currentValue;
BOOL didComeToRest = NO;
NSUInteger numberOfResets = 0;
[[[_uiManager stub] andDo:^(NSInvocation *invocation) {
__unsafe_unretained NSDictionary<NSString *, NSNumber *> *props;
[invocation getArgument:&props atIndex:4];
currentValue = props[@"opacity"].doubleValue;
}] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
// Run 3 secs of animation five times.
for (NSUInteger i = 0; i < 3 * 60 * 5; i++) {
[_nodesManager stepAnimations:_displayLink];
// Verify monotonicity when not resetting the animation.
// Greater *or equal* because the animation stops during these 3 seconds.
if (!didComeToRest) {
XCTAssertGreaterThanOrEqual(currentValue, previousValue);
}
if (didComeToRest && currentValue != previousValue) {
numberOfResets++;
didComeToRest = NO;
}
// Test if animation has come to rest using the 0.1 threshold from DecayAnimation.m.
didComeToRest = fabs(currentValue - previousValue) < 0.1;
previousValue = currentValue;
}
// The animation should have reset 4 times.
XCTAssertEqual(numberOfResets, 4u);
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testSpringAnimationLoop
{
[self createSimpleAnimatedView:@1000 withOpacity:0];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"spring",
@"iterations": @5,
@"stiffness": @230.2,
@"damping": @22,
@"mass": @1,
@"initialVelocity": @0,
@"toValue": @1,
@"restSpeedThreshold": @0.001,
@"restDisplacementThreshold": @0.001,
@"overshootClamping": @NO}
endCallback:nil];
BOOL didComeToRest = NO;
CGFloat previousValue = 0;
NSUInteger numberOfResets = 0;
__block CGFloat currentValue;
[[[_uiManager stub] andDo:^(NSInvocation *invocation) {
__unsafe_unretained NSDictionary<NSString *, NSNumber *> *props;
[invocation getArgument:&props atIndex:4];
currentValue = props[@"opacity"].doubleValue;
}] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
// Run for 3 seconds five times.
for (NSUInteger i = 0; i < 3 * 60 * 5; i++) {
[_nodesManager stepAnimations:_displayLink];
if (!didComeToRest) {
// Verify that animation step is relatively small.
XCTAssertLessThan(fabs(currentValue - previousValue), 0.12);
}
// Test to see if it reset after coming to rest
if (didComeToRest && currentValue == 0) {
didComeToRest = NO;
numberOfResets++;
}
// Record that the animation did come to rest when it rests on toValue.
didComeToRest = fabs(currentValue - 1) < 0.001 && fabs(currentValue - previousValue) < 0.001;
previousValue = currentValue;
}
// Verify that value reset 4 times after finishing a full animation and is currently resting.
XCTAssertEqual(numberOfResets, 4u);
XCTAssertTrue(didComeToRest);
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testAnimationCallbackFinish
{
[self createSimpleAnimatedView:@1000 withOpacity:0];
NSArray<NSNumber *> *frames = @[@0, @1];
__block NSInteger endCallbackCalls = 0;
RCTResponseSenderBlock endCallback = ^(NSArray *response) {
endCallbackCalls++;
XCTAssertEqualObjects(response, @[@{@"finished": @YES}]);
};
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"frames", @"frames": frames, @"toValue": @1}
endCallback:endCallback];
[_nodesManager stepAnimations:_displayLink];
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(endCallbackCalls, 0);
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(endCallbackCalls, 1);
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(endCallbackCalls, 1);
}
/**
* Creates a following graph of nodes:
* Value(1, firstValue) ----> Add(3) ---> Style(4) ---> Props(5) ---> View(viewTag)
* |
* Value(2, secondValue) --+
*
* Add(3) node maps to a "translateX" attribute of the Style(4) node.
*/
- (void)createAnimatedGraphWithAdditionNode:(NSNumber *)viewTag
firstValue:(CGFloat)firstValue
secondValue:(CGFloat)secondValue
{
[_nodesManager createAnimatedNode:@1
config:@{@"type": @"value", @"value": @(firstValue), @"offset": @0}];
[_nodesManager createAnimatedNode:@2
config:@{@"type": @"value", @"value": @(secondValue), @"offset": @0}];
[_nodesManager createAnimatedNode:@3
config:@{@"type": @"addition", @"input": @[@1, @2]}];
[_nodesManager createAnimatedNode:@4
config:@{@"type": @"style", @"style": @{@"translateX": @3}}];
[_nodesManager createAnimatedNode:@5
config:@{@"type": @"props", @"props": @{@"style": @4}}];
[_nodesManager connectAnimatedNodes:@1 childTag:@3];
[_nodesManager connectAnimatedNodes:@2 childTag:@3];
[_nodesManager connectAnimatedNodes:@3 childTag:@4];
[_nodesManager connectAnimatedNodes:@4 childTag:@5];
[_nodesManager connectAnimatedNodeToView:@5 viewTag:viewTag viewName:@"UIView"];
}
- (void)testAdditionNode
{
NSNumber *viewTag = @50;
[self createAnimatedGraphWithAdditionNode:viewTag firstValue:100 secondValue:1000];
NSArray<NSNumber *> *frames = @[@0, @1];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"frames", @"frames": frames, @"toValue": @101}
endCallback:nil];
[_nodesManager startAnimatingNode:@2
nodeTag:@2
config:@{@"type": @"frames", @"frames": frames, @"toValue": @1010}
endCallback:nil];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @1100)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @1111)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @1111)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
/**
* Verifies that views are updated properly when one of the addition input nodes has started animating
* while the other one has not.
*
* We expect that the output of the addition node will take the starting value of the second input
* node even though the node hasn't been connected to an active animation driver.
*/
- (void)testViewReceiveUpdatesIfOneOfAnimationHasntStarted
{
NSNumber *viewTag = @50;
[self createAnimatedGraphWithAdditionNode:viewTag firstValue:100 secondValue:1000];
NSArray<NSNumber *> *frames = @[@0, @1];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"frames", @"frames": frames, @"toValue": @101}
endCallback:nil];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @1100)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @1101)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @1101)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
/**
* Verifies that views are updated properly when one of the addition input nodes animation finishes
* before the other.
*
* We expect that the output of the addition node after one of the animation has finished will
* take the last value of the animated node and the view will receive updates up until the second
* animation is over.
*/
- (void)testViewReceiveUpdatesWhenOneOfAnimationHasFinished
{
NSNumber *viewTag = @50;
[self createAnimatedGraphWithAdditionNode:viewTag firstValue:100 secondValue:1000];
NSArray<NSNumber *> *firstFrames = @[@0, @1];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"frames", @"frames": firstFrames, @"toValue": @200}
endCallback:nil];
NSArray<NSNumber *> *secondFrames = @[@0, @0.2, @0.4, @0.6, @0.8, @1];
[_nodesManager startAnimatingNode:@2
nodeTag:@2
config:@{@"type": @"frames", @"frames": secondFrames, @"toValue": @1010}
endCallback:nil];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @1100)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
for (NSUInteger i = 1; i < secondFrames.count; i++) {
CGFloat expected = 1200.0 + secondFrames[i].doubleValue * 10.0;
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @(expected))];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @1210)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testMultiplicationNode
{
NSNumber *viewTag = @50;
[_nodesManager createAnimatedNode:@1
config:@{@"type": @"value", @"value": @1, @"offset": @0}];
[_nodesManager createAnimatedNode:@2
config:@{@"type": @"value", @"value": @5, @"offset": @0}];
[_nodesManager createAnimatedNode:@3
config:@{@"type": @"multiplication", @"input": @[@1, @2]}];
[_nodesManager createAnimatedNode:@4
config:@{@"type": @"style", @"style": @{@"translateX": @3}}];
[_nodesManager createAnimatedNode:@5
config:@{@"type": @"props", @"props": @{@"style": @4}}];
[_nodesManager connectAnimatedNodes:@1 childTag:@3];
[_nodesManager connectAnimatedNodes:@2 childTag:@3];
[_nodesManager connectAnimatedNodes:@3 childTag:@4];
[_nodesManager connectAnimatedNodes:@4 childTag:@5];
[_nodesManager connectAnimatedNodeToView:@5 viewTag:viewTag viewName:@"UIView"];
NSArray<NSNumber *> *frames = @[@0, @1];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"frames", @"frames": frames, @"toValue": @2}
endCallback:nil];
[_nodesManager startAnimatingNode:@2
nodeTag:@2
config:@{@"type": @"frames", @"frames": frames, @"toValue": @10}
endCallback:nil];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @5)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @20)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"translateX", @20)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testHandleStoppingAnimation
{
[self createSimpleAnimatedView:@1000 withOpacity:0];
NSArray<NSNumber *> *frames = @[@0, @0.2, @0.4, @0.6, @0.8, @1];
__block BOOL endCallbackCalled = NO;
RCTResponseSenderBlock endCallback = ^(NSArray *response) {
endCallbackCalled = YES;
XCTAssertEqualObjects(response, @[@{@"finished": @NO}]);
};
[_nodesManager startAnimatingNode:@404
nodeTag:@1
config:@{@"type": @"frames", @"frames": frames, @"toValue": @1}
endCallback:endCallback];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[_nodesManager stopAnimation:@404];
XCTAssertEqual(endCallbackCalled, YES);
// Run "update" loop a few more times -> we expect no further updates nor callback calls to be
// triggered
for (NSUInteger i = 0; i < 5; i++) {
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
}
- (void)testInterpolationNode
{
NSNumber *viewTag = @50;
[_nodesManager createAnimatedNode:@1
config:@{@"type": @"value", @"value": @10, @"offset": @0}];
[_nodesManager createAnimatedNode:@2
config:@{@"type": @"interpolation",
@"inputRange": @[@10, @20],
@"outputRange": @[@0, @1],
@"extrapolateLeft": @"extend",
@"extrapolateRight": @"extend"}];
[_nodesManager createAnimatedNode:@3
config:@{@"type": @"style", @"style": @{@"opacity": @2}}];
[_nodesManager createAnimatedNode:@4
config:@{@"type": @"props", @"props": @{@"style": @3}}];
[_nodesManager connectAnimatedNodes:@1 childTag:@2];
[_nodesManager connectAnimatedNodes:@2 childTag:@3];
[_nodesManager connectAnimatedNodes:@3 childTag:@4];
[_nodesManager connectAnimatedNodeToView:@4 viewTag:viewTag viewName:@"UIView"];
NSArray<NSNumber *> *frames = @[@0, @0.2, @0.4, @0.6, @0.8, @1];
[_nodesManager startAnimatingNode:@1
nodeTag:@1
config:@{@"type": @"frames", @"frames": frames, @"toValue": @20}
endCallback:nil];
for (NSNumber *frame in frames) {
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"opacity", frame)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"opacity", @1)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (id<RCTEvent>)createScrollEventWithTag:(NSNumber *)viewTag value:(CGFloat)value
{
// The event value is the 3rd argument.
NSArray *arguments = @[@1, @1, @{@"contentOffset": @{@"y": @(value)}}];
return [[RCTFakeEvent alloc] initWithName:@"topScroll"
viewTag:viewTag
arguments:arguments];
}
- (void)testNativeAnimatedEventDoUpdate
{
NSNumber *viewTag = @1000;
[self createSimpleAnimatedView:viewTag withOpacity:0];
[_nodesManager addAnimatedEventToView:viewTag
eventName:@"topScroll"
eventMapping:@{@"animatedValueTag": @1,
@"nativeEventPath": @[@"contentOffset", @"y"]}];
// Make sure that the update actually happened synchronously in `handleAnimatedEvent` and does
// not wait for the next animation loop.
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:viewTag
viewName:@"UIView"
props:RCTPropChecker(@"opacity", @10)];
[_nodesManager handleAnimatedEvent:[self createScrollEventWithTag:viewTag value:10]];
[_uiManager verify];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
- (void)testNativeAnimatedEventDoNotUpdate
{
NSNumber *viewTag = @1000;
[self createSimpleAnimatedView:viewTag withOpacity:0];
[_nodesManager addAnimatedEventToView:viewTag
eventName:@"otherEvent"
eventMapping:@{@"animatedValueTag": @1,
@"nativeEventPath": @[@"contentOffset", @"y"]}];
[_nodesManager addAnimatedEventToView:@999
eventName:@"topScroll"
eventMapping:@{@"animatedValueTag": @1,
@"nativeEventPath": @[@"contentOffset", @"y"]}];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager handleAnimatedEvent:[self createScrollEventWithTag:viewTag value:10]];
[_uiManager verify];
}
/**
* Creates a following graph of nodes:
* Value(3, initialValue) ----> Style(4) ---> Props(5) ---> View(viewTag)
*
* Value(3) is set to track Value(1) via Tracking(2) node with the provided animation config
*/
- (void)createAnimatedGraphWithTrackingNode:(NSNumber *)viewTag
initialValue:(CGFloat)initialValue
animationConfig:(NSDictionary *)animationConfig
{
[_nodesManager createAnimatedNode:@1
config:@{@"type": @"value", @"value": @(initialValue), @"offset": @0}];
[_nodesManager createAnimatedNode:@3
config:@{@"type": @"value", @"value": @(initialValue), @"offset": @0}];
[_nodesManager createAnimatedNode:@2
config:@{@"type": @"tracking",
@"animationId": @70,
@"value": @3,
@"toValue": @1,
@"animationConfig": animationConfig}];
[_nodesManager createAnimatedNode:@4
config:@{@"type": @"style", @"style": @{@"translateX": @3}}];
[_nodesManager createAnimatedNode:@5
config:@{@"type": @"props", @"props": @{@"style": @4}}];
[_nodesManager connectAnimatedNodes:@1 childTag:@2];
[_nodesManager connectAnimatedNodes:@3 childTag:@4];
[_nodesManager connectAnimatedNodes:@4 childTag:@5];
[_nodesManager connectAnimatedNodeToView:@5 viewTag:viewTag viewName:@"UIView"];
}
/**
* In this test we verify that when value is being tracked we can update destination value in the
* middle of ongoing animation and the animation will update and animate to the new spot. This is
* tested using simple 5 frame backed timing animation.
*/
- (void)testTracking
{
NSArray *frames = @[@0, @0.25, @0.5, @0.75, @1];
NSDictionary *animationConfig = @{@"type": @"frames", @"frames": frames};
[self createAnimatedGraphWithTrackingNode:@1000 initialValue:0 animationConfig:animationConfig];
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:@1000
viewName:@"UIView"
props:RCTPropChecker(@"translateX", 0)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
// update "toValue" to 100, we expect tracking animation to animate now from 0 to 100 in 5 steps
[_nodesManager setAnimatedNodeValue:@1 value:@100];
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
for (NSNumber *frame in frames) {
NSNumber *expected = @([frame doubleValue] * 100);
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:@1000
viewName:@"UIView"
props:RCTPropChecker(@"translateX", expected)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
// update "toValue" to 0 but run only two frames from the animation,
// we expect tracking animation to animate now from 100 to 75
[_nodesManager setAnimatedNodeValue:@1 value:@0];
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
for (int i = 0; i < 2; i++) {
NSNumber *expected = @(100. * (1. - [frames[i] doubleValue]));
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:@1000
viewName:@"UIView"
props:RCTPropChecker(@"translateX", expected)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
// at this point we expect tracking value to be at 75
// we update "toValue" again to 100 and expect the animation to restart from the current place
[_nodesManager setAnimatedNodeValue:@1 value:@100];
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
for (NSNumber *frame in frames) {
NSNumber *expected = @(50. + 50. * [frame doubleValue]);
[[_uiManager expect] synchronouslyUpdateViewOnUIThread:@1000
viewName:@"UIView"
props:RCTPropChecker(@"translateX", expected)];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
[_nodesManager stepAnimations:_displayLink];
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
/**
* In this test we verify that when tracking is set up for a given animated node and when the
* animation settles it will not be registered as an active animation and therefore will not
* consume resources on running the animation that has already completed. Then we verify that when
* the value updates the animation will resume as expected and the complete again when reaches the
* end.
*/
- (void)testTrackingPausesWhenEndValueIsReached
{
NSArray *frames = @[@0, @0.5, @1];
NSDictionary *animationConfig = @{@"type": @"frames", @"frames": frames};
[self createAnimatedGraphWithTrackingNode:@1000 initialValue:0 animationConfig:animationConfig];
[_nodesManager setAnimatedNodeValue:@1 value:@100];
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
__block int callCount = 0;
[[[_uiManager stub] andDo:^(NSInvocation* __unused invocation) {
callCount++;
}] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
for (NSUInteger i = 0; i < frames.count; i++) {
[_nodesManager stepAnimations:_displayLink];
}
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(callCount, 4);
// the animation has completed, we expect no updates to be done
[[[_uiManager stub] andDo:^(NSInvocation* __unused invocation) {
XCTFail("Expected not to be called");
}] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
// restore rejected method, we will use it later on
callCount = 0;
[[[_uiManager stub] andDo:^(NSInvocation* __unused invocation) {
callCount++;
}] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
// we update end value and expect the animation to restart
[_nodesManager setAnimatedNodeValue:@1 value:@200];
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
for (NSUInteger i = 0; i < frames.count; i++) {
[_nodesManager stepAnimations:_displayLink];
}
[_nodesManager stepAnimations:_displayLink];
XCTAssertEqual(callCount, 4);
// the animation has completed, we expect no updates to be done
[[_uiManager reject] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
[_nodesManager stepAnimations:_displayLink];
[_uiManager verify];
}
/**
* In this test we verify that when tracking is configured to use spring animation and when the
* destination value updates the current speed of the animated value will be taken into account
* while updating the spring animation and it will smoothly transition to the new end value.
*/
- (void) testSpringTrackingRetainsSpeed
{
// this spring config correspomds to tension 20 and friction 0.5 which makes the spring settle
// very slowly
NSDictionary *springConfig = @{@"type": @"spring",
@"restSpeedThreshold": @0.001,
@"mass": @1,
@"restDisplacementThreshold": @0.001,
@"initialVelocity": @0.5,
@"damping": @2.5,
@"stiffness": @157.8,
@"overshootClamping": @NO};
[self createAnimatedGraphWithTrackingNode:@1000 initialValue:0 animationConfig:springConfig];
__block CGFloat lastTranslateX = 0;
[[[_uiManager stub] andDo:^(NSInvocation *invocation) {
__unsafe_unretained NSDictionary *props = nil;
[invocation getArgument:&props atIndex:4];
lastTranslateX = [props[@"translateX"] doubleValue];
}] synchronouslyUpdateViewOnUIThread:OCMOCK_ANY viewName:OCMOCK_ANY props:OCMOCK_ANY];
// update "toValue" to 1, we expect tracking animation to animate now from 0 to 1
[_nodesManager setAnimatedNodeValue:@1 value:@1];
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
// we run several steps of animation until the value starts bouncing, has negative speed and
// passes the final point (that is 1) while going backwards
BOOL isBoucingBack = NO;
CGFloat previousValue = 0;
for (int maxFrames = 500; maxFrames > 0; maxFrames--) {
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
if (previousValue >= 1. && lastTranslateX < 1.) {
isBoucingBack = YES;
break;
}
previousValue = lastTranslateX;
}
XCTAssert(isBoucingBack);
// we now update "toValue" to 1.5 but since the value have negative speed and has also pretty
// low friction we expect it to keep going in the opposite direction for a few more frames
[_nodesManager setAnimatedNodeValue:@1 value:@1.5];
[_nodesManager stepAnimations:_displayLink]; // kick off the tracking
int bounceBackInitialFrames = 0;
BOOL hasTurnedForward = NO;
// we run 8 seconds of animation
for (int i = 0; i < 8 * 60; i++) {
[_nodesManager stepAnimations:_displayLink];
if (!hasTurnedForward) {
if (lastTranslateX <= previousValue) {
bounceBackInitialFrames++;
} else {
hasTurnedForward = true;
}
}
previousValue = lastTranslateX;
}
XCTAssert(hasTurnedForward);
XCTAssertGreaterThan(bounceBackInitialFrames, 3);
XCTAssertEqual(lastTranslateX, 1.5);
}
@end
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