iOS Unit testing, perform login in setup then perform tests

I would like to test some manager classes that perform asynchronous requests.

I would like to perform a log in request in the setup so that in the following tests, I can use the auth token for the api requests. Basically before the tests are performed I would like to make sure the auth key is set in the setup.

Here is some code that works, but With these method I have to login for every test. I only want to login once in the setup.

-(void)testRetrieveAddressesForUserID {
    XCTestExpectation *expectation = [self expectationWithDescription:@"ready"];
    [self.userManager loginWithEmail:kEmail password:kUserPassword successBlock:^(DRYVUser *loggedInUser) {
        NSLog(@"login success");
        self.addressManager = [DRYVAddressManager new];
        [self.addressManager retrieveAddressesForUserID:@(362) withSuccessBlock:^(NSArray * success) {
            NSLog(@"RETRIEVED ADDRESS");
            self.address = success.firstObject;
            XCTAssertEqualObjects(self.address.addressID, @(131));
            XCTAssertEqualObjects(self.address.streetAddress, @"2016 W Evergreen");
            XCTAssertEqualObjects(self.address.label, @"2016 W Evergreen");
            XCTAssertEqualObjects(self.address.secondaryAddress, @"");
            XCTAssertEqualObjects(self.address.city, @"Chicago");
            XCTAssertEqualObjects(self.address.state, @"IL");
            XCTAssertEqualObjects(self.address.zip, @"60622");
            [expectation fulfill];

        }andFailureBlock:^(NSError *error) {
            XCTFail(@"Failure Block was called");

        }];
    }andFailureBlock: ^(NSError *error){
        NSLog(@"Login Failed");

    }];

    [self waitForExpectationsWithTimeout:5 handler:^(NSError *error) {

    }];
}