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//
// GHTestUtils.m
// GHUnitIOS
//
// Created by John Boiles on 10/22/12.
// Copyright 2012. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#import "GHTestUtils.h"
#import <QuartzCore/CoreAnimation.h>
void GHRunForInterval(CFTimeInterval interval) {
CFTimeInterval checkEveryInterval = 0.01;
// We use CACurrentMediaTime() instead of [NSDate timeIntervalSinceReferenceDate] here for two reasons
// 1. One testing strategy for time-dependent code is to mock NSDate methods using swizzling.
// 2. CACurrentMediaTime() is better for relative timing since it's not subject to network time synchronization.
CFTimeInterval runUntilTime = CACurrentMediaTime() + interval;
NSArray *runLoopModes = @[(NSString *)kCFRunLoopDefaultMode, (NSString *)kCFRunLoopCommonModes];
NSInteger runIndex = 0;
while (CACurrentMediaTime() < runUntilTime) {
NSString *mode = runLoopModes[(runIndex++ % [runLoopModes count])];
@autoreleasepool {
SInt32 runLoopStatus = CFRunLoopRunInMode((__bridge CFStringRef)mode, checkEveryInterval, false);
if (!mode || (runLoopStatus == kCFRunLoopRunFinished)) {
// If there were no run loop sources or timers then we should sleep for the interval
usleep(checkEveryInterval * USEC_PER_SEC);
}
}
}
}
void GHRunUntilTimeoutWhileBlock(CFTimeInterval timeout, BOOL(^whileBlock)()) {
CFTimeInterval endTime = CACurrentMediaTime() + timeout;
while (whileBlock() && (CACurrentMediaTime() < endTime)) {
GHRunForInterval(0.1);
}
}