Funnybot

Simple/naive helper for custom mocking: record arguments, return pre-recorded values.

Since recording requires arguments, funnybot's main job is to hide that behind RwLock, and generally to take out verbosity out of manual mocking.

Example

```rust

struct MockRepository<'a> { // funnybot-instance to hold recorded arguments (here: String) and return-values (here: list of String) pub group_members: FunnyBot<'a, String, Vec> }

impl<'a> Repository for MockRepository<'a> { async fn listgroupmembers(&self, groupid: &str) -> Vec { self.groupmembers.call(groupid.toowned()) }
}

[test]

fn testsomething() { let mockrepository = MockRepositry { group_members: FunnyBot::repeat(vec!["stan", "kyle", "eric", "kenny"]) };

let subject = Subject::new(&mock_repository);

let actual = subject.my_function();

assert_eq!(mock_repository.group_members.args(), vec["main-characters"]);
assert_eq!(actual, …);

}

```