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//! timestamp API for the sandbox.

use crate::{Runtime, Sandbox};

/// Generic Time type.
type MomentOf<R> = <R as pallet_timestamp::Config>::Moment;

impl<R> Sandbox<R>
where
    R: Runtime,
    R::Config: pallet_timestamp::Config,
{
    /// Return the timestamp of the current block.
    pub fn get_timestamp(&mut self) -> MomentOf<R::Config> {
        self.execute_with(pallet_timestamp::Pallet::<R::Config>::get)
    }

    /// Set the timestamp of the current block.
    ///
    /// # Arguments
    ///
    /// * `timestamp` - The new timestamp to be set.
    pub fn set_timestamp(&mut self, timestamp: MomentOf<R::Config>) {
        self.execute_with(|| pallet_timestamp::Pallet::<R::Config>::set_timestamp(timestamp))
    }
}

#[cfg(test)]
mod tests {
    use crate::{runtime::MinimalRuntime, Sandbox};

    #[test]
    fn getting_and_setting_timestamp_works() {
        let mut sandbox = Sandbox::<MinimalRuntime>::new().expect("Failed to create sandbox");
        for timestamp in 0..10 {
            assert_ne!(sandbox.get_timestamp(), timestamp);
            sandbox.set_timestamp(timestamp);
            assert_eq!(sandbox.get_timestamp(), timestamp);

            sandbox.build_block().expect("Failed to build block");
        }
    }
}