ios - Stubbing Methods does not work with OCMock3.4 -

stubbing methods works nicely 'nsuserdefaults',but doesn't seem work custom method.

my test code follows:

- (void)testexample  {     id userdefaultmock = ocmclassmock([nsuserdefaults class]);     ocmstub([userdefaultmock standarduserdefaults]).andreturn(userdefaultmock);     ocmstub([userdefaultmock objectforkey:[ocmarg any]]).andreturn(@"user defaults mock obj");       id managermock = ocmclassmock([viewmanager class]);     ocmstub([managermock sharedinstance]).andreturn(managermock);     ocmstub([managermock generateobjwithobj:[ocmarg any]]).andreturn(@(11));      viewcontroller *vc = [[viewcontroller alloc]init];     [vc publicmethod];  } 

code in viewcontroller:

- (void)publicmethod {     [[nsuserdefaults standarduserdefaults]setobject:@"mockobj" forkey:@"mockobjkey"];     id obj = [[nsuserdefaults standarduserdefaults]objectforkey:@"mockobjkey"];     nslog(@"mockobjkey:%@",obj);      nsnumber *num = @(0);     nsnumber *i = [[viewmanager sharedinstance] generateindexwithnumber:num];     nslog(@"i expected 1, actual :%ld",i.integervalue); } 

code in viewmanager:

static viewmanager *sharedviewmanager = nil;  + (id)sharedinstance {     if (nil == sharedviewmanager)     {         sharedviewmanager = [[viewmanager alloc]init];     }     return sharedviewmanager; } - (nsnumber *)generateindexwithnumber:(nsnumber *)index {     nslog(@"generateindexwithnumber:%ld",index.integervalue);     return @(index.integervalue + 1); } 

and console output follows:

2017-07-03 10:12:25.812 oc_unit[2214:64454] mockobjkey:user defaults mock obj 2017-07-03 10:12:25.812 oc_unit[2214:64454] generateindexwithnumber:0 2017-07-03 10:12:25.812 oc_unit[2214:64454] expected 1, actual :1 

the last line of output should 'i expected 1, actual :11' if shubbing methods works. i'm wondering，why not output expected。

it looks stubbing generateobjwithobj: code calling generateindexwithnumber:.