Example of stubbing and mocking class methods using Kiwi

gistfile1.m

#import "Kiwi.h"

@interface MyFactory : NSObject
+ (id)makeThingsCalled:(NSString *)name;
@end

@implementation MyFactory

+ (id)makeThingsCalled:(NSString *)name;
{
    // we're going to stub this out anyway
    return @"some object to return";
}

@end

@interface MyObject : NSObject
- (id)doAllTheThings;
@end

@implementation MyObject

- (id)doAllTheThings;
{
    return [MyFactory makeThingsCalled:@"scott"];
}

@end

SPEC_BEGIN(MyObjectSpec)

describe(@"test mocks on a class method", ^{
    it(@"should behave as usual without stubs and mocks", ^{
        MyObject *obj = [[MyObject alloc] init];
        [[[obj doAllTheThings] should] equal:@"some object to return"];
    });
    
    it(@"should stub the class method", ^{
        MyObject *obj = [[MyObject alloc] init];
        [[MyFactory stubAndReturn:@"another object"] makeThingsCalled:any()];
        [[[obj doAllTheThings] should] equal:@"another object"];
    });
    
    it(@"should expect the factory method and replace the implementation", ^{
        MyObject *obj = [[MyObject alloc] init];
        [[[MyFactory should] receiveAndReturn:@"yet another object"] makeThingsCalled:@"scott"];
        [[[obj doAllTheThings] should] equal:@"yet another object"];
    });
});

SPEC_END