CODEWITHSUNDEEP
objective-cunit-testingmockingocmockxcasset
Madu
Madu

Reputation: 5049

ios: Mocking private properties

I want to mock an array which is private property inside my class. i have made it available in my unit test by doing this. (this is inside my unit test file) 

@interface MyViewController ()

@property (nonatomic, strong) NSArray myArray;

@end

Lets assume i have a type called Person and this array should contains person objects. So i am doing the following in my test case

- (void)testBeneficiariesCount {
    // This is an example of a functional test case.
    // Use XCTAssert and related functions to verify your tests produce the correct results.
    id mockArray = OCMClassMock([NSArray class]);

    self.myVC.myarray = mockArray;


    Person *p1 = [[Person alloc] init];
    Person *p2 = [[Person alloc] init];
    Person *p3 = [[Person alloc] init];
    Person *p4 = [[Person alloc] init];
    Person *p5 = [[Person alloc] init];

    p1.name = @“Alice"; p2.name = @“James”; p3.name = @“Oscar"; p4.name = @“Harri”; p5.name = @“John”;
    persons = [NSArray arrayWithObjects:p1,p2,p3,p4,p5,nil];


    OCMStub([self.myVC myArray]).andReturn(persons);

    XCTAssertEqual([self.myVC numberOfPersons], 5);

 }

myVC has a method named numberOfPersons, when i run this, test case is failing complaining that (0) is not equal to (5). This means that i am not successfully able to mock my array, as i also tries to print the mocked array and it has nothing in it.

Can some please tell me what i am doing wrong here.

Upvotes: 0

Views: 1190

Answers (1)

Cristik
Cristik

Reputation: 32929

You need a mock to stub onto, and from what it looks like, self.myVC is not a mock.

I'd recommend creating a partial mock for the view controller and stub afterwards.

MyViewController *partialMock = OCMPartialMock(self.myVC)

OCMStub([partialMock myArray]).andReturn(persons);

XCTAssertEqual([partialMock numberOfPersons], 5);

BTW, you don't need the mockArray usage if you're anyway be stubbing the myArray getter.

Upvotes: 1

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