use crate::{
storage::{StorageDecodeLength, StorageTryAppend},
traits::Get,
};
pub use sp_runtime::WeakBoundedVec;
impl<T, S> StorageDecodeLength for WeakBoundedVec<T, S> {}
impl<T, S: Get<u32>> StorageTryAppend<T> for WeakBoundedVec<T, S> {
fn bound() -> usize {
S::get() as usize
}
}
#[cfg(test)]
pub mod test {
use super::*;
use crate::Twox128;
use frame_support::traits::ConstU32;
use sp_io::TestExternalities;
#[crate::storage_alias]
type Foo = StorageValue<Prefix, WeakBoundedVec<u32, ConstU32<7>>>;
#[crate::storage_alias]
type FooMap = StorageMap<Prefix, Twox128, u32, WeakBoundedVec<u32, ConstU32<7>>>;
#[crate::storage_alias]
type FooDoubleMap =
StorageDoubleMap<Prefix, Twox128, u32, Twox128, u32, WeakBoundedVec<u32, ConstU32<7>>>;
#[test]
fn decode_len_works() {
TestExternalities::default().execute_with(|| {
let bounded: WeakBoundedVec<u32, ConstU32<7>> = vec![1, 2, 3].try_into().unwrap();
Foo::put(bounded);
assert_eq!(Foo::decode_len().unwrap(), 3);
});
TestExternalities::default().execute_with(|| {
let bounded: WeakBoundedVec<u32, ConstU32<7>> = vec![1, 2, 3].try_into().unwrap();
FooMap::insert(1, bounded);
assert_eq!(FooMap::decode_len(1).unwrap(), 3);
assert!(FooMap::decode_len(0).is_none());
assert!(FooMap::decode_len(2).is_none());
});
TestExternalities::default().execute_with(|| {
let bounded: WeakBoundedVec<u32, ConstU32<7>> = vec![1, 2, 3].try_into().unwrap();
FooDoubleMap::insert(1, 1, bounded);
assert_eq!(FooDoubleMap::decode_len(1, 1).unwrap(), 3);
assert!(FooDoubleMap::decode_len(2, 1).is_none());
assert!(FooDoubleMap::decode_len(1, 2).is_none());
assert!(FooDoubleMap::decode_len(2, 2).is_none());
});
}
}