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//
// ASRunLoopQueueTests.m
// Texture
//
// Copyright (c) 2017-present, Pinterest, Inc. All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
#import <XCTest/XCTest.h>
#import <AsyncDisplayKit/ASRunLoopQueue.h>
static NSTimeInterval const kRunLoopRunTime = 0.001; // Allow the RunLoop to run for one millisecond each time.
@interface ASRunLoopQueueTests : XCTestCase
@end
@implementation ASRunLoopQueueTests
#pragma mark enqueue tests
- (void)testEnqueueNilObjectsToQueue
{
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:YES handler:nil];
id object = nil;
[queue enqueue:object];
XCTAssertTrue(queue.isEmpty);
}
- (void)testEnqueueSameObjectTwiceToDefaultQueue
{
id object = [[NSObject alloc] init];
__unsafe_unretained id weakObject = object;
__block NSUInteger dequeuedCount = 0;
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:YES handler:^(id _Nonnull dequeuedItem, BOOL isQueueDrained) {
if (dequeuedItem == weakObject) {
dequeuedCount++;
}
}];
[queue enqueue:object];
[queue enqueue:object];
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:kRunLoopRunTime]];
XCTAssert(dequeuedCount == 1);
}
- (void)testEnqueueSameObjectTwiceToNonExclusiveMembershipQueue
{
id object = [[NSObject alloc] init];
__unsafe_unretained id weakObject = object;
__block NSUInteger dequeuedCount = 0;
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:YES handler:^(id _Nonnull dequeuedItem, BOOL isQueueDrained) {
if (dequeuedItem == weakObject) {
dequeuedCount++;
}
}];
queue.ensureExclusiveMembership = NO;
[queue enqueue:object];
[queue enqueue:object];
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:kRunLoopRunTime]];
XCTAssert(dequeuedCount == 2);
}
#pragma mark processQueue tests
- (void)testDefaultQueueProcessObjectsOneAtATime
{
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:YES handler:^(id _Nonnull dequeuedItem, BOOL isQueueDrained) {
[NSThread sleepForTimeInterval:kRunLoopRunTime * 2]; // So each element takes more time than the available
}];
[queue enqueue:[[NSObject alloc] init]];
[queue enqueue:[[NSObject alloc] init]];
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:kRunLoopRunTime]];
XCTAssertFalse(queue.isEmpty);
}
- (void)testQueueProcessObjectsInBatchesOfSpecifiedSize
{
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:YES handler:^(id _Nonnull dequeuedItem, BOOL isQueueDrained) {
[NSThread sleepForTimeInterval:kRunLoopRunTime * 2]; // So each element takes more time than the available
}];
queue.batchSize = 2;
[queue enqueue:[[NSObject alloc] init]];
[queue enqueue:[[NSObject alloc] init]];
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:kRunLoopRunTime]];
XCTAssertTrue(queue.isEmpty);
}
- (void)testQueueOnlySendsIsDrainedForLastObjectInBatch
{
id objectA = [[NSObject alloc] init];
id objectB = [[NSObject alloc] init];
__unsafe_unretained id weakObjectA = objectA;
__unsafe_unretained id weakObjectB = objectB;
__block BOOL isQueueDrainedWhenProcessingA = NO;
__block BOOL isQueueDrainedWhenProcessingB = NO;
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:YES handler:^(id _Nonnull dequeuedItem, BOOL isQueueDrained) {
if (dequeuedItem == weakObjectA) {
isQueueDrainedWhenProcessingA = isQueueDrained;
} else if (dequeuedItem == weakObjectB) {
isQueueDrainedWhenProcessingB = isQueueDrained;
}
}];
queue.batchSize = 2;
[queue enqueue:objectA];
[queue enqueue:objectB];
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:kRunLoopRunTime]];
XCTAssertFalse(isQueueDrainedWhenProcessingA);
XCTAssertTrue(isQueueDrainedWhenProcessingB);
}
#pragma mark strong/weak tests
- (void)testStrongQueueRetainsObjects
{
id object = [[NSObject alloc] init];
__unsafe_unretained id weakObject = object;
__block BOOL didProcessObject = NO;
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:YES handler:^(id _Nonnull dequeuedItem, BOOL isQueueDrained) {
if (dequeuedItem == weakObject) {
didProcessObject = YES;
}
}];
[queue enqueue:object];
object = nil;
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:kRunLoopRunTime]];
XCTAssertTrue(didProcessObject);
}
- (void)testWeakQueueDoesNotRetainsObjects
{
id object = [[NSObject alloc] init];
__unsafe_unretained id weakObject = object;
__block BOOL didProcessObject = NO;
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:NO handler:^(id _Nonnull dequeuedItem, BOOL isQueueDrained) {
if (dequeuedItem == weakObject) {
didProcessObject = YES;
}
}];
[queue enqueue:object];
object = nil;
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:kRunLoopRunTime]];
XCTAssertFalse(didProcessObject);
}
- (void)testWeakQueueWithAllDeallocatedObjectsIsDrained
{
ASRunLoopQueue *queue = [[ASRunLoopQueue alloc] initWithRunLoop:CFRunLoopGetMain() retainObjects:NO handler:nil];
id object = [[NSObject alloc] init];
[queue enqueue:object];
object = nil;
XCTAssertFalse(queue.isEmpty);
[[NSRunLoop mainRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:kRunLoopRunTime]];
XCTAssertTrue(queue.isEmpty);
}
@end