test.m

    NSString *textLabel = [NSString new];
    id mockHud = OCMClassMock([MBProgressHUD class]);
    OCMExpect([mockHud showHUDAddedTo:settingsViewController.view animated:YES]);
    OCMExpect([mockHud labelText]).andReturn(textLabel);
    OCMExpect([mockHud hide:YES]);
    
    TOCFuture *accountEditFuture = [settingsViewController updateAccount];
    
    XCTAssertNotNil(accountEditFuture, @"Should have received a non-nil instance of %@", [TOCFuture class]);
    XCTAssertEqualObjects(textLabel, @"Loading", @"");
    
    __block BOOL callbackInvoked = NO;

    [accountEditFuture thenDo:^ (id value) {
        XCTAssertNil(value);
        callbackInvoked = YES;
    }];

    [accountEditFuture catchDo:^ (id failure) {
        XCTFail(@"Failed unexpectedly: %@", failure);
        callbackInvoked = YES;
    }];

    XCTAssertTrue(callbackInvoked, @"The callback should have been hit no matter what");
    OCMVerifyAll(mockController);
    OCMVerifyAll(mockEditor);
    OCMVerifyAll(mockHud);
    [mockEditor stopMocking];
    [mockHud stopMocking];