react-native/RNTester/RNTesterUnitTests/RCTEventDispatcherTests.m

260 lines
7.6 KiB
Objective-C

/**
* 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 <UIKit/UIKit.h>
#import <XCTest/XCTest.h>
#import <OCMock/OCMock.h>
#import <React/RCTEventDispatcher.h>
@interface RCTTestEvent : NSObject <RCTEvent>
@property (atomic, assign, readwrite) BOOL canCoalesce;
@end
@implementation RCTTestEvent
{
NSDictionary<NSString *, id> *_body;
}
@synthesize viewTag = _viewTag;
@synthesize eventName = _eventName;
@synthesize coalescingKey = _coalescingKey;
- (instancetype)initWithViewTag:(NSNumber *)viewTag
eventName:(NSString *)eventName
body:(NSDictionary<NSString *, id> *)body
coalescingKey:(uint16_t)coalescingKey
{
if (self = [super init]) {
_viewTag = viewTag;
_eventName = eventName;
_body = body;
_canCoalesce = YES;
_coalescingKey = coalescingKey;
}
return self;
}
- (id<RCTEvent>)coalesceWithEvent:(id<RCTEvent>)newEvent
{
return newEvent;
}
+ (NSString *)moduleDotMethod
{
return @"MyCustomEventemitter.emit";
}
- (NSArray *)arguments
{
return @[_eventName, _body];
}
@end
@interface RCTDummyBridge : RCTBridge
- (void)dispatchBlock:(dispatch_block_t)block
queue:(dispatch_queue_t)queue;
@end
@implementation RCTDummyBridge
- (void)dispatchBlock:(dispatch_block_t)block
queue:(dispatch_queue_t)queue
{}
@end
@interface RCTEventDispatcherTests : XCTestCase
@end
@implementation RCTEventDispatcherTests
{
id _bridge;
RCTEventDispatcher *_eventDispatcher;
NSString *_eventName;
NSDictionary<NSString *, id> *_body;
RCTTestEvent *_testEvent;
NSString *_JSMethod;
}
- (void)setUp
{
[super setUp];
_bridge = [OCMockObject mockForClass:[RCTDummyBridge class]];
_eventDispatcher = [RCTEventDispatcher new];
[_eventDispatcher setValue:_bridge forKey:@"bridge"];
_eventName = RCTNormalizeInputEventName(@"sampleEvent");
_body = @{ @"foo": @"bar" };
_testEvent = [[RCTTestEvent alloc] initWithViewTag:nil
eventName:_eventName
body:_body
coalescingKey:0];
_JSMethod = [[_testEvent class] moduleDotMethod];
}
- (void)testLegacyEventsAreImmediatelyDispatched
{
[[_bridge expect] enqueueJSCall:@"RCTDeviceEventEmitter"
method:@"emit"
args:[_testEvent arguments]
completion:NULL];
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
[_eventDispatcher sendDeviceEventWithName:_eventName body:_body];
#pragma clang diagnostic pop
[_bridge verify];
}
- (void)testNonCoalescingEventIsImmediatelyDispatched
{
_testEvent.canCoalesce = NO;
[[_bridge expect] dispatchBlock:OCMOCK_ANY queue:RCTJSThread];
[_eventDispatcher sendEvent:_testEvent];
[_bridge verify];
}
- (void)testCoalescingEventIsImmediatelyDispatched
{
_testEvent.canCoalesce = YES;
[[_bridge expect] dispatchBlock:OCMOCK_ANY queue:RCTJSThread];
[_eventDispatcher sendEvent:_testEvent];
[_bridge verify];
}
- (void)testMultipleEventsResultInOnlyOneDispatchAfterTheFirstOne
{
[[_bridge expect] dispatchBlock:OCMOCK_ANY queue:RCTJSThread];
[_eventDispatcher sendEvent:_testEvent];
[_eventDispatcher sendEvent:_testEvent];
[_eventDispatcher sendEvent:_testEvent];
[_eventDispatcher sendEvent:_testEvent];
[_eventDispatcher sendEvent:_testEvent];
[_bridge verify];
}
- (void)testRunningTheDispatchedBlockResultInANewOneBeingEnqueued
{
__block dispatch_block_t eventsEmittingBlock;
[[_bridge expect] dispatchBlock:[OCMArg checkWithBlock:^(dispatch_block_t block) {
eventsEmittingBlock = block;
return YES;
}] queue:RCTJSThread];
[_eventDispatcher sendEvent:_testEvent];
[_bridge verify];
// eventsEmittingBlock would be called when js is no longer busy, which will result in emitting events
[[_bridge expect] enqueueJSCall:[[_testEvent class] moduleDotMethod]
args:[_testEvent arguments]];
eventsEmittingBlock();
[_bridge verify];
[[_bridge expect] dispatchBlock:OCMOCK_ANY queue:RCTJSThread];
[_eventDispatcher sendEvent:_testEvent];
[_bridge verify];
}
- (void)testBasicCoalescingReturnsLastEvent
{
__block dispatch_block_t eventsEmittingBlock;
[[_bridge expect] dispatchBlock:[OCMArg checkWithBlock:^(dispatch_block_t block) {
eventsEmittingBlock = block;
return YES;
}] queue:RCTJSThread];
[[_bridge expect] enqueueJSCall:[[_testEvent class] moduleDotMethod]
args:[_testEvent arguments]];
RCTTestEvent *ignoredEvent = [[RCTTestEvent alloc] initWithViewTag:nil
eventName:_eventName
body:@{ @"other": @"body" }
coalescingKey:0];
[_eventDispatcher sendEvent:ignoredEvent];
[_eventDispatcher sendEvent:_testEvent];
eventsEmittingBlock();
[_bridge verify];
}
- (void)testDifferentEventTypesDontCoalesce
{
NSString *firstEventName = RCTNormalizeInputEventName(@"firstEvent");
RCTTestEvent *firstEvent = [[RCTTestEvent alloc] initWithViewTag:nil
eventName:firstEventName
body:_body
coalescingKey:0];
__block dispatch_block_t eventsEmittingBlock;
[[_bridge expect] dispatchBlock:[OCMArg checkWithBlock:^(dispatch_block_t block) {
eventsEmittingBlock = block;
return YES;
}] queue:RCTJSThread];
[[_bridge expect] enqueueJSCall:[[_testEvent class] moduleDotMethod]
args:[firstEvent arguments]];
[[_bridge expect] enqueueJSCall:[[_testEvent class] moduleDotMethod]
args:[_testEvent arguments]];
[_eventDispatcher sendEvent:firstEvent];
[_eventDispatcher sendEvent:_testEvent];
eventsEmittingBlock();
[_bridge verify];
}
- (void)testSameEventTypesWithDifferentCoalesceKeysDontCoalesce
{
NSString *eventName = RCTNormalizeInputEventName(@"firstEvent");
RCTTestEvent *firstEvent = [[RCTTestEvent alloc] initWithViewTag:nil
eventName:eventName
body:_body
coalescingKey:0];
RCTTestEvent *secondEvent = [[RCTTestEvent alloc] initWithViewTag:nil
eventName:eventName
body:_body
coalescingKey:1];
__block dispatch_block_t eventsEmittingBlock;
[[_bridge expect] dispatchBlock:[OCMArg checkWithBlock:^(dispatch_block_t block) {
eventsEmittingBlock = block;
return YES;
}] queue:RCTJSThread];
[[_bridge expect] enqueueJSCall:[[_testEvent class] moduleDotMethod]
args:[firstEvent arguments]];
[[_bridge expect] enqueueJSCall:[[_testEvent class] moduleDotMethod]
args:[secondEvent arguments]];
[_eventDispatcher sendEvent:firstEvent];
[_eventDispatcher sendEvent:secondEvent];
[_eventDispatcher sendEvent:firstEvent];
[_eventDispatcher sendEvent:secondEvent];
[_eventDispatcher sendEvent:secondEvent];
[_eventDispatcher sendEvent:firstEvent];
[_eventDispatcher sendEvent:firstEvent];
eventsEmittingBlock();
[_bridge verify];
}
@end