02-flipper-contract.rs

#![feature(proc_macro_hygiene)]

use ink_core::storage;
use ink_lang2 as ink;

#[ink::contract(version = "0.1.0")]
mod flipper {
    #[ink(storage)]
    struct Flipper {
        value: storage::Value<bool>,
    }

    impl Flipper {
        #[ink(constructor)]
        fn new(&mut self, init_value: bool) {
            self.value.set(init_value);
        }

        #[ink(constructor)]
        fn default(&mut self) {
            self.new(false)
        }

        #[ink(message)]
        fn flip(&mut self) {
            *self.value = !self.get();
        }

        #[ink(message)]
        fn get(&self) -> bool {
            *self.value
        }
    }

    #[cfg(test)]
    mod tests {
        use super::*;

        #[test]
        fn it_works() {
            let mut flipper = Flipper::new(false);
            assert_eq!(flipper.get(), false);
            flipper.flip();
            assert_eq!(flipper.get(), true);
        }
    }
}

fn main() {}