【发布时间】:2011-12-31 02:27:13
【问题描述】:
我想要一个计时器类,它可以在还剩 1/2/3 秒时向委托人发送消息。
我的测试目标经常崩溃。
- iOS 逻辑单元测试目标。
- 使用重复的 NSTimer 测试持续时间的类
- 一个没有断言的测试。测试通过,但随后目标崩溃:
/Developer/Tools/RunPlatformUnitTests.include: line 415: 770 Bus error "${THIN_TEST_RIG}" "${OTHER_TEST_FLAGS}" "${TEST_BUNDLE_PATH}"
在我看来,这是某种内存分配错误,但我无法弄清楚我错过了什么。该问题与停止计时器例程有关。只有当计时器用完时,目标才会崩溃。
我尝试过的事情
- 构建和分析 - 未报告错误
- 从链接器标志中移除 -framework 和 UIKit
- 删除 dealloc - 这没有任何效果
测试代码
-(void)testGivenThreeSecondDurationAtOneSecondDelegateShouldBeToldToShowGreenCard {
JGTimerController *timer = [JGTimerController timerWithDurationValue:1 delegate:nil];
[timer startTimer];
[[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:1.1]];
}
类代码
@interface JGTimerController : NSObject {
NSNumber *duration;
NSTimer *timer;
id <NSObject, JGTimerControllerDelegate> _delegate;
}
@property (nonatomic, retain) NSNumber *duration;
... public methods...
@end
@implementation JGTimerController
@synthesize duration;
+(JGTimerController *)timerWithDurationValue:(NSUInteger)durationValue delegate:(id <JGTimerControllerDelegate>)delegate_ {
JGTimerController *instance = [[[JGTimerController alloc] initWithDurationValue:durationValue delegate:delegate_] autorelease];
return instance;
}
-(JGTimerController *)initWithDurationValue:(NSUInteger)durationValue delegate:(id <JGTimerControllerDelegate>)delegate_ {
self = [super init];
timer = nil;
[self setDurationValue:durationValue];
_delegate = delegate_;
return self;
}
-(NSUInteger)durationValue {
NSNumber *result = [self duration];
return result ? [result intValue] : 0;
}
-(void)setDurationValue:(NSUInteger)value_ {
[self setDuration:[NSNumber numberWithInt:value_]];
}
-(BOOL)stopTimerAtZeroDuration:(NSTimer *)timer_ {
if ([self durationValue] == 0) {
[self stopTimer];
return YES;
}
return NO;
}
-(void)startTimer {
if ([self stopTimerAtZeroDuration:nil])
return;
timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timerDidCountDownByASecond:) userInfo:nil repeats:YES];
}
-(void)stopTimer {
if ([self durationValue] == 0 && [_delegate conformsToProtocol:@protocol(JGTimerControllerDelegate)])
[_delegate showRedCard];
[timer invalidate];
[timer release];
}
-(BOOL)timerIsRunning {
return (timer != nil);
}
-(void)timerDidCountDownByASecond:(NSTimer *)timer_ {
[self setDurationValue:[self durationValue] - 1];
[self stopTimerAtZeroDuration:timer_];
}
-(void)dealloc {
[_delegate release];
[timer release];
[duration release];
[super dealloc];
}
@end
【问题讨论】:
标签: ios cocoa-touch unit-testing nstimer