objective-c - OCMockObserver：观察到意外通知

Question

通知管理器.h

#import <Foundation/Foundation.h>

@interface NotificationManager : NSObject

-(void)postNotification;

@end

通知管理器.m

#import "NotificationManager.h"

@implementation NotificationManager

-(void)postNotification
{
    NSDictionary *userInfo = [NSDictionary dictionaryWithObject:@"Some data" forKey:@"TestData"];
    [[NSNotificationCenter defaultCenter] postNotification:[NSNotification notificationWithName:@"TestNotification" object:nil userInfo:userInfo]];
}

@end

单元测试：

-(void)testNotification
{
    id observerMock = [OCMockObject observerMock];

    [[NSNotificationCenter defaultCenter]addMockObserver:observerMock name:@"TestNotification"  object:nil];

    [[observerMock expect] notificationWithName:@"TestNotification" object:[OCMArg any]];

    NotificationManager * nm= [[NotificationManager alloc]init];
    [nm postNotification];

    [observerMock verify];

    [[NSNotificationCenter defaultCenter] removeObserver:observerMock];
}

我得到错误：

OCMockObserver：观察到意外通知：NSConcreteNotification 0xfbbad70 {name = TestNotification; userInfo = { TestData = "一些数据"; }}

如果我发布没有 userInfo 对象的通知（只是 nil），则测试有效。有人可以解释为什么吗？

Answer 1

当您未指定userInfo时，它期望值为零。将其更改为：

[[observerMock expect] notificationWithName:@"TestNotification" object:[OCMArg any] userInfo:[OCMArg any]];

它应该通过。